RE: Tomcat 7 (7.0.54) java.lang.ClassFormatError: Truncated class file
Dear Konstantin, Sorry for the inconvenience caused due to the below!! We will take care this in future post. -Original Message- From: Konstantin Kolinko [mailto:knst.koli...@gmail.com] Sent: Thursday, July 23, 2015 2:09 PM To: Tomcat Users List Subject: Re: Tomcat 7 (7.0.54) java.lang.ClassFormatError: Truncated class file 2015-07-23 8:49 GMT+03:00 Rahul Kumar Singh rahul.si...@nectechnologies.in: Dear Christopher, The solution is fine, but first thing we need to identify the root cause. If it is the problem of loading a JSP-based class file. Why it is happened in production environment? Any solid reason ? Who knows? It is your environment and your file. It is up to you to perform the diagnostics. (Or hire some 3rd party and to provide them access to your system). For starters, we do not know what file is broken. Also you stacktrace does not show the root cause. Where this class loading error was detected? There shall be stacktrace from java.lang.ClassFormatError that was wrapped by ServletException. You only provided 3 lines of stacktrace of ServletException. It may be compiler's fault -- current version is 7.0.63 and it has a newer version of compiler, or you are hitting some size limit -- quotas, disk partition size, 2Gb limit, etc., or you have broken file / faulty HDD -- Maybe not the class file for a JSP page is broken, but some other class file on your system http://tomcat.apache.org/lists.html#tomcat-users Rules: - 6. no top-posting - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org DISCLAIMER: --- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. It shall not attach any liability on the originator or NEC or its affiliates. Any views or opinions presented in this email are solely those of the author and may not necessarily reflect the opinions of NEC or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of the author of this e-mail is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. . --- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Tomcat 7 (7.0.54) Login URL is Passing with JSESSION ID. | why there is different behaviour in Tomcat 6 and Tomcat 7
Dear Christopher,
On further debugging, I found out the difference is seen between 6.0.32 (same
behavior as in 6.0.28 reported earlier) and 6.0.33 (same as in 7.0.54 reported
earlier ) I could not figure out which change ( as mentioned in link
https://tomcat.apache.org/tomcat-6.0-doc/changelog.html ) has caused this
difference.
Step to reproduce it?
1. Untar tomcat versions(Tomcat V6.0.32 and Tomcat V6.0.33)
2. Enable access log by uncommenting 'AccessLogValve' in conf/server.xml
as shown below
Valve className=org.apache.catalina.valves.AccessLogValve
directory=${catalina.base}/logs
prefix=localhost_access_log. suffix=.txt pattern=common
resolveHosts=false/
3. Deploy a simple web application (login.jsp) in Tomcat.
// login.jsp in tomcat
html
body
%
String str = request.getRequestURI();
System.out.println(str);
out.println(str);
%
/body
/html
4. Start tomcat
5. Run client wget to execute the login.jsp
6. View access log file entry
-Original Message-
From: Christopher Schultz [mailto:ch...@christopherschultz.net]
Sent: Tuesday, July 21, 2015 8:47 PM
To: Tomcat Users List
Subject: Re: Tomcat 7 (7.0.54) Login URL is Passing with JSESSION ID. | why
there is different behaviour in Tomcat 6 and Tomcat 7
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256
Rahul,
On 7/21/15 6:38 AM, Rahul Kumar Singh wrote:
“;jsessionid=C1A67FB90E1300DF14EE027A3634A34B” passed in URL
localhost:8080/login.jsp;jsessionid=C1A67FB90E1300DF14EE027A3634A34B
is not received in tomcat 6(V6.0.28). It is received in tomcat
7(V7.0.54). What is reason for the different behavior?
I'm not sure why the change in behavior, but when a client requests a protected
resource, the container has to redirect that client to the login page.
Before the redirect, a session is created to hold the saved-request to the
originally-requested protected resource. This session id needs to be preserved.
If the container can't tell if the client supports cookie-based session
tracking, it must encode the session id in the login URL just in case. You'll
find that, if you use a browser with cookies enabled, after the login page
there will be no jsessionid path parameters in your URLs.
Is the presence of the jsessionid path parameter a problem for you?
(And at this point, it's really a good idea to start planning your upgrade path
to Tomcat 8, which is quite reliable and stable. Tomcat 6 will EOL 2016-12-31:
http://tomcat.apache.org/tomcat-60-eol.html)
- -chris
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RE: Tomcat 7 (7.0.54) Login URL is Passing with JSESSION ID. | why there is different behaviour in Tomcat 6 and Tomcat 7
Dear Konstantin,
On further debugging, I found out the difference is seen between 6.0.32 (same
behavior as in 6.0.28 reported earlier) and 6.0.33 (same as in 7.0.54 reported
earlier ) I could not figure out which change ( as mentioned in link
https://tomcat.apache.org/tomcat-6.0-doc/changelog.html ) has caused this
difference.
Step to reproduce it?
1. Untar tomcat versions(Tomcat V6.0.32 and Tomcat V6.0.33)
2. Enable access log by uncommenting 'AccessLogValve' in conf/server.xml
as shown below
Valve className=org.apache.catalina.valves.AccessLogValve
directory=${catalina.base}/logs
prefix=localhost_access_log. suffix=.txt pattern=common
resolveHosts=false/
3. Deploy a simple web application (login.jsp) in Tomcat.
// login.jsp in tomcat
html
body
%
String str = request.getRequestURI();
System.out.println(str);
out.println(str);
%
/body
/html
4. Start tomcat
5. Run client wget to execute the login.jsp
6. View access log file entry
-Original Message-
From: Konstantin Kolinko [mailto:knst.koli...@gmail.com]
Sent: Tuesday, July 21, 2015 5:32 PM
To: Tomcat Users List
Subject: Re: Tomcat 7 (7.0.54) Login URL is Passing with JSESSION ID. | why
there is different behaviour in Tomcat 6 and Tomcat 7
2015-07-21 14:38 GMT+03:00 Rahul Kumar Singh rahul.si...@nectechnologies.in:
Hello Tomcat Team,
“;jsessionid=C1A67FB90E1300DF14EE027A3634A34B” passed in URL
localhost:8080/login. jsp;jsessionid=C1A67FB90E1300DF14EE027A3634A34B
is not received in tomcat 6(V6.0.28) . It is received in tomcat 7(V7.0.54) .
What is reason for the different behavior?
I used WGET command to send same request to both version of tomcats. Access
logs (logs/localhost_access_log.txt ) of both tomcat versions show the
difference
WGET REQUEST:
wget localhost:8080/login. jsp;jsessionid=C1A67FB90E1300DF14EE027A3634A34B
.
Observations:
TOMCAT 7.0.54 ACCESS LOGS:
127.0.0.1 - - [21/Jul/2015:08:30:13 +] GET
/login.jsp;jsessionid=C1A67FB90E1300DF14EE027A3634A34B HTTP/1.0 200 1063
-Original Message-
From: Rahul Kumar Singh
Sent: Tuesday, June 23, 2015 6:17 PM
To: 'Tomcat Users List'
Subject: Tomcat 7 (7.0.54) Login URL is Passing with JSESSION ID.
Hello Tomcat team,
In Tomcat7.0.54 We have observe that Login URL is Appended with JSESSIONID
parameter in our Web Application
Example:
/framework/login.action;jsessionid=098D3C84B56FF2A2A25E88E4F059A20B
System Configuration (WINDOW7+IE-8)
Due to this session authentication get failed.
1. Step by step recipe to reproduce your issue = ?
2. 6.0.28 is old. The current one is 6.0.44
3. http://tomcat.apache.org/security-6.html
CVE-2013-2067 ?
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for the named recipient(s) only.
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this email are solely those of the author and may not necessarily reflect the
opinions of NEC or its affiliates.
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RE: Tomcat 7 (7.0.54) java.lang.ClassFormatError: Truncated class file
Dear Christopher, The solution is fine, but first thing we need to identify the root cause. If it is the problem of loading a JSP-based class file. Why it is happened in production environment? Any solid reason ? Regads, Rahul Kumar Singh -Original Message- From: Christopher Schultz [mailto:ch...@christopherschultz.net] Sent: Wednesday, July 22, 2015 7:21 PM To: Tomcat Users List Subject: Re: Tomcat 7 (7.0.54) java.lang.ClassFormatError: Truncated class file -BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Rahul, On 7/21/15 11:02 PM, Rahul Kumar Singh wrote: Dear Christopher, Any quotas on the filesystem? No. Any idea which class it's having trouble loading? I have no idea on this but I have got the below exception: == 2015-07-17 09:53:50,860 ERROR javax.servlet.ServletException: java.lang.ClassFormatError: Truncated class file at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:343) at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appli cationFilterChain.java:303) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilt erChain.java:208) Well, it looks like you are having a problem loading a JSP-based class file. You could write a script to try to load each JSP .class file to see which one is broken. Something like this: $ for class in $(find . -name *.class) ; \ do \ echo $class \ javap -classpath [classpath] $(sed -e 's/\.class//' ) \ done For more reference there is some logs from Catalina.out after tomcat startup. Jul 17, 2015 11:58:33 AM org.apache.jasper.compiler.TldLocationsCache tldScanJar INFO: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time. This is unrelated to your real problem. - -chris -BEGIN PGP SIGNATURE- Comment: GPGTools - http://gpgtools.org iQIcBAEBCAAGBQJVr5+oAAoJEBzwKT+lPKRY54YQAJWJpc9wtHX5jZQS2eX0EqDD nPvlA9P7w3Oc27w8cTMDdLCXFT60ZqnNFjO3h3UHspJ0B6vBhn1xBUTePRzlnFPn 0qdcTVuTgyAfQzBPh1luqXaEFMi815OV+ptzte8PQtkfcZbwzuAmbt//i4SJdWPt 2ES2FMQlaydv+LpQwUst11eXJtvsLXixKBWlD3BkplZ1tWkHl0xsWHlV7E8qupAG LslCIV8hVLxYH1rOHbvirtmxDVpaqWGVEbFKq5oT/nBwDRmZWhyB+YcjOluY1KBl 1OtbhEAOuBjYMrtiYvc+gT2FcGk73U0V/diL5niq5LhzsoSwvthRTSp/abSZlzhd PF5RjtyS5AygdwqJMkYFeIcl3Di3/eFQhq/FQobdcuOXO+QcL4TMUTjrFc80rlE6 hIaQM0XgJbr7aIzLBDsY0WvksGnROwPt6PAlWBisSN9GAD/P2oqUNSzkQmH7UvPp gF2pGhLZvamNsWqcq+XUfrE2OwGrUsGfHmlxwdXg6ZbWpZ900rVJmLOSfg3xLW8x lYTKNofdofrZBX93ahp4/xK/UjmBH/ORP7JzXIuirhct3DvDnACPt0JC+WrVKWee N6aWxKJIIao5YIcT6h3wKY5Oo8Buakteds0xGmTbhzeAdc3oRxyqYQ/jyiRfjsNL issppLvjG+tCLBboK+3+ =a0Du -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org DISCLAIMER: --- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. It shall not attach any liability on the originator or NEC or its affiliates. Any views or opinions presented in this email are solely those of the author and may not necessarily reflect the opinions of NEC or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of the author of this e-mail is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. . ---
RE: Tomcat 7 (7.0.54) java.lang.ClassFormatError: Truncated class file
Do you have sufficient free space on your hard drive? Maybe your disk is full. No, Disk Space is enough approx. ~ 96 GB Did it happen once only, or this is a repeating error? No it occurs multiple times. -Original Message- From: Konstantin Kolinko [mailto:knst.koli...@gmail.com] Sent: Tuesday, July 21, 2015 3:50 PM To: Tomcat Users List Subject: Re: Tomcat 7 (7.0.54) java.lang.ClassFormatError: Truncated class file 2015-07-21 11:41 GMT+03:00 Rahul Kumar Singh rahul.si...@nectechnologies.in: Hello Tomcat team, Thanks for your always support !! Please do the needful on below problem. Web Application credential: - Servlet used :servelet3.0 MVC framework: Struts2.0 Java: Open JDK 1.7 We have observe the below error in production environment. What is the cause of the issue. == == 2015-07-17 09:53:50,860 ERROR javax.servlet.ServletException: java.lang.ClassFormatError: Truncated class file at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:343) at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFi lterChain.java:208) == == Use case: 1- Http request Start. 2- Struts 2.0 filter executed. 3- FilterChain.dofiletr(httpRequest, httpResponse) [doFilter method] : error occurs here More log reference: == === at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:745) Caused by: java.lang.ClassFormatError: Truncated class file at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:800) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) at java.net.URLClassLoader.defineClass(URLClassLoader.java:449) at java.net.URLClassLoader.access$100(URLClassLoader.java:71) at java.net.URLClassLoader$1.run(URLClassLoader.java:361) at java.net.URLClassLoader$1.run(URLClassLoader.java:355) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:354) at org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:132) at org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:63) at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:145) at org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:172) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:369) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334) ... 83 more == === Your Help would be highly appreciated. Do you have sufficient free space on your hard drive? Maybe your disk is full. Did it happen once only, or this is a repeating error? - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional
RE: Tomcat 7 (7.0.54) java.lang.ClassFormatError: Truncated class file
Dear Konstantin, Do you have sufficient free space on your hard drive? Maybe your disk is full. Did it happen once only, or this is a repeating error? -Original Message- From: Konstantin Kolinko [mailto:knst.koli...@gmail.com] Sent: Tuesday, July 21, 2015 3:50 PM To: Tomcat Users List Subject: Re: Tomcat 7 (7.0.54) java.lang.ClassFormatError: Truncated class file 2015-07-21 11:41 GMT+03:00 Rahul Kumar Singh rahul.si...@nectechnologies.in: Hello Tomcat team, Thanks for your always support !! Please do the needful on below problem. Web Application credential: - Servlet used :servelet3.0 MVC framework: Struts2.0 Java: Open JDK 1.7 We have observe the below error in production environment. What is the cause of the issue. == == 2015-07-17 09:53:50,860 ERROR javax.servlet.ServletException: java.lang.ClassFormatError: Truncated class file at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:343) at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFi lterChain.java:208) == == Use case: 1- Http request Start. 2- Struts 2.0 filter executed. 3- FilterChain.dofiletr(httpRequest, httpResponse) [doFilter method] : error occurs here More log reference: == === at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:745) Caused by: java.lang.ClassFormatError: Truncated class file at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:800) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) at java.net.URLClassLoader.defineClass(URLClassLoader.java:449) at java.net.URLClassLoader.access$100(URLClassLoader.java:71) at java.net.URLClassLoader$1.run(URLClassLoader.java:361) at java.net.URLClassLoader$1.run(URLClassLoader.java:355) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:354) at org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:132) at org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:63) at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:145) at org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:172) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:369) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334) ... 83 more == === Your Help would be highly appreciated. Do you have sufficient free space on your hard drive? Maybe your disk is full. Did it happen once only, or this is a repeating error? - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Tomcat 7 (7.0.54) java.lang.ClassFormatError: Truncated class file
Some more reference from catalina.out Jul 17, 2015 10:15:36 AM org.apache.catalina.core.ApplicationDispatcher invoke SEVERE: Servlet.service() for servlet jsp threw exception java.lang.ClassFormatError: Truncated class file at java.lang.ClassLoader.defineClass1(Native Method) -Original Message- From: Rahul Kumar Singh [mailto:rahul.si...@nectechnologies.in] Sent: Wednesday, July 22, 2015 9:33 AM To: Tomcat Users List Subject: RE: Tomcat 7 (7.0.54) java.lang.ClassFormatError: Truncated class file Dear Christopher, Any quotas on the filesystem? No. Any idea which class it's having trouble loading? I have no idea on this but I have got the below exception: == 2015-07-17 09:53:50,860 ERROR javax.servlet.ServletException: java.lang.ClassFormatError: Truncated class file at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:343) at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) For more reference there is some logs from Catalina.out after tomcat startup. Jul 17, 2015 11:58:33 AM org.apache.jasper.compiler.TldLocationsCache tldScanJar INFO: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time. Regards, Rahul -Original Message- From: Christopher Schultz [mailto:ch...@christopherschultz.net] Sent: Tuesday, July 21, 2015 10:49 PM To: Tomcat Users List Subject: Re: Tomcat 7 (7.0.54) java.lang.ClassFormatError: Truncated class file -BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Rahul, On 7/21/15 10:32 AM, Rahul Kumar Singh wrote: Do you have sufficient free space on your hard drive? Maybe your disk is full. No, Disk Space is enough approx. ~ 96 GB Any quotas on the filesystem? Did it happen once only, or this is a repeating error? No it occurs multiple times. Any idea which class it's having trouble loading? - -chris -BEGIN PGP SIGNATURE- Comment: GPGTools - http://gpgtools.org iQIcBAEBCAAGBQJVrn7wAAoJEBzwKT+lPKRYprcP/AmH3h58sRRF36LyDEm8ixwI JvbACxfAIcGJcGEi976zjcCQwVDe5jjUcPtMm83ygH1dA5p9u3qAFHXJehRS4T6W Xq1ZlXF1KrxWNY6jIwWoX2Ut1+3OkBWw2AMuzyR6HcKCHm9975JEzg5lXgpQLcMU tC2iRHWNZVYGUzq4mCBSqyn27H3z+8uxn14a2tBetxBdimAwyGThxLhJsQUfjUc7 cpbw2nnv9E+RnjamU6zGIqPPTUiY7PzChCiBhfJVWRRig1nxqAg3VOi0rYkC3EL8 iAntsUfJsYc6thLm8dv2dRsrm6Nxc1P9gLE/3mPJfae84ya2knSRkADGtNs8JNwi rYokc6T8KgPNWNvNO5OjEIZIUR4idaBenw9mjVwGrjH0WRvt7OQ7hoVGPq9kzce5 h0Ob+UL7zWrPXJ+F7AAB4SwfGnToq6WFOtQCt4cOhSIIySxsJsESdKN0G0hudLYp WHrVh9cD6t7e4T1YJCcrrs5YP5XAuT5A2SIxtXexGsJ4D52HuvdiyD9O4RWCXNnm j9/dDiPKmhsRYbg7TcEC6O+ggxFdDSzLosM+sPe41eAmhgAYguWskRwdKpE/MYAx /ZLMsvieGtkoQkbWHBrx9JU6tlKiwh1u5hyGEu4B/IR3JWVL4/5PVozBL2LYq9jT O5gV21MzzkL2lB5Oy5al =wMn+ -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org DISCLAIMER: --- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. It shall not attach any liability on the originator or NEC or its affiliates. Any views or opinions presented in this email are solely those of the author and may not necessarily reflect the opinions of NEC or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of the author of this e-mail is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. . ---B CB [ X ܚX KK[XZ[ \ \ ][ X ܚX P X ] \X K ܙ B ܈Y][ۘ[ [X[ K[XZ[ \ \ Z[ X ] \X K ܙ B DISCLAIMER: --- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. It shall not attach any liability on the originator or NEC or its affiliates. Any views or opinions presented in this email are solely those of the author and may not necessarily reflect the opinions of NEC
RE: Tomcat 7 (7.0.54) java.lang.ClassFormatError: Truncated class file
Dear Christopher, Any quotas on the filesystem? No. Any idea which class it's having trouble loading? I have no idea on this but I have got the below exception: == 2015-07-17 09:53:50,860 ERROR javax.servlet.ServletException: java.lang.ClassFormatError: Truncated class file at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:343) at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) For more reference there is some logs from Catalina.out after tomcat startup. Jul 17, 2015 11:58:33 AM org.apache.jasper.compiler.TldLocationsCache tldScanJar INFO: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time. Regards, Rahul -Original Message- From: Christopher Schultz [mailto:ch...@christopherschultz.net] Sent: Tuesday, July 21, 2015 10:49 PM To: Tomcat Users List Subject: Re: Tomcat 7 (7.0.54) java.lang.ClassFormatError: Truncated class file -BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Rahul, On 7/21/15 10:32 AM, Rahul Kumar Singh wrote: Do you have sufficient free space on your hard drive? Maybe your disk is full. No, Disk Space is enough approx. ~ 96 GB Any quotas on the filesystem? Did it happen once only, or this is a repeating error? No it occurs multiple times. Any idea which class it's having trouble loading? - -chris -BEGIN PGP SIGNATURE- Comment: GPGTools - http://gpgtools.org iQIcBAEBCAAGBQJVrn7wAAoJEBzwKT+lPKRYprcP/AmH3h58sRRF36LyDEm8ixwI JvbACxfAIcGJcGEi976zjcCQwVDe5jjUcPtMm83ygH1dA5p9u3qAFHXJehRS4T6W Xq1ZlXF1KrxWNY6jIwWoX2Ut1+3OkBWw2AMuzyR6HcKCHm9975JEzg5lXgpQLcMU tC2iRHWNZVYGUzq4mCBSqyn27H3z+8uxn14a2tBetxBdimAwyGThxLhJsQUfjUc7 cpbw2nnv9E+RnjamU6zGIqPPTUiY7PzChCiBhfJVWRRig1nxqAg3VOi0rYkC3EL8 iAntsUfJsYc6thLm8dv2dRsrm6Nxc1P9gLE/3mPJfae84ya2knSRkADGtNs8JNwi rYokc6T8KgPNWNvNO5OjEIZIUR4idaBenw9mjVwGrjH0WRvt7OQ7hoVGPq9kzce5 h0Ob+UL7zWrPXJ+F7AAB4SwfGnToq6WFOtQCt4cOhSIIySxsJsESdKN0G0hudLYp WHrVh9cD6t7e4T1YJCcrrs5YP5XAuT5A2SIxtXexGsJ4D52HuvdiyD9O4RWCXNnm j9/dDiPKmhsRYbg7TcEC6O+ggxFdDSzLosM+sPe41eAmhgAYguWskRwdKpE/MYAx /ZLMsvieGtkoQkbWHBrx9JU6tlKiwh1u5hyGEu4B/IR3JWVL4/5PVozBL2LYq9jT O5gV21MzzkL2lB5Oy5al =wMn+ -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org DISCLAIMER: --- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. It shall not attach any liability on the originator or NEC or its affiliates. Any views or opinions presented in this email are solely those of the author and may not necessarily reflect the opinions of NEC or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of the author of this e-mail is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. . ---
RE: Tomcat 7 (7.0.54) Login URL is Passing with JSESSION ID. | why there is different behaviour in Tomcat 6 and Tomcat 7
Hello Tomcat Team, “;jsessionid=C1A67FB90E1300DF14EE027A3634A34B” passed in URL localhost:8080/login. jsp;jsessionid=C1A67FB90E1300DF14EE027A3634A34B is not received in tomcat 6(V6.0.28) . It is received in tomcat 7(V7.0.54) . What is reason for the different behavior? I used WGET command to send same request to both version of tomcats. Access logs (logs/localhost_access_log.txt ) of both tomcat versions show the difference WGET REQUEST: wget localhost:8080/login. jsp;jsessionid=C1A67FB90E1300DF14EE027A3634A34B . Observations: TOMCAT 7.0.54 ACCESS LOGS: 127.0.0.1 - - [21/Jul/2015:08:30:13 +] GET /login.jsp;jsessionid=C1A67FB90E1300DF14EE027A3634A34B HTTP/1.0 200 1063 -Original Message- From: Rahul Kumar Singh Sent: Tuesday, June 23, 2015 6:17 PM To: 'Tomcat Users List' Subject: Tomcat 7 (7.0.54) Login URL is Passing with JSESSION ID. Hello Tomcat team, In Tomcat7.0.54 We have observe that Login URL is Appended with JSESSIONID parameter in our Web Application Example: /framework/login.action;jsessionid=098D3C84B56FF2A2A25E88E4F059A20B System Configuration (WINDOW7+IE-8) Due to this session authentication get failed. But in Tomcat 6 It is not happening. Could any one help me on this from Apache Tomcat community. Regards, Rahul Kumar Singh DISCLAIMER: --- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. It shall not attach any liability on the originator or NEC or its affiliates. Any views or opinions presented in this email are solely those of the author and may not necessarily reflect the opinions of NEC or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of the author of this e-mail is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. . ---
RE: Tomcat 7 (7.0.54) java.lang.ClassFormatError: Truncated class file
Hello Tomcat team, Thanks for your always support !! Please do the needful on below problem. Web Application credential: - Servlet used :servelet3.0 MVC framework: Struts2.0 Java: Open JDK 1.7 We have observe the below error in production environment. What is the cause of the issue. 2015-07-17 09:53:50,860 ERROR javax.servlet.ServletException: java.lang.ClassFormatError: Truncated class file at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:343) at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) Use case: 1- Http request Start. 2- Struts 2.0 filter executed. 3- FilterChain.dofiletr(httpRequest, httpResponse) [doFilter method] : error occurs here More log reference: = at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:745) Caused by: java.lang.ClassFormatError: Truncated class file at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:800) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) at java.net.URLClassLoader.defineClass(URLClassLoader.java:449) at java.net.URLClassLoader.access$100(URLClassLoader.java:71) at java.net.URLClassLoader$1.run(URLClassLoader.java:361) at java.net.URLClassLoader$1.run(URLClassLoader.java:355) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:354) at org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:132) at org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:63) at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:145) at org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:172) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:369) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334) ... 83 more = Your Help would be highly appreciated. Regards, Rahul Kumar Singh DISCLAIMER: --- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. It shall not attach any liability on the originator or NEC or its affiliates. Any views or opinions presented in this email are solely those of the author and may not necessarily reflect the opinions of NEC or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of the author of this e-mail is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately
Tomcat 7 (7.0.54) Login URL is Passing with JSESSION ID.
Hello Tomcat team, In Tomcat7.0.54 We have observe that Login URL is Appended with JSESSIONID parameter in our Web Application Example: /framework/login.action;jsessionid=098D3C84B56FF2A2A25E88E4F059A20B System Configuration (WINDOW7+IE-8) Due to this session authentication get failed. But in Tomcat 6 It is not happening. Could any one help me on this from Apache Tomcat community. Regards, Rahul Kumar Singh DISCLAIMER: --- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. It shall not attach any liability on the originator or NEC or its affiliates. Any views or opinions presented in this email are solely those of the author and may not necessarily reflect the opinions of NEC or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of the author of this e-mail is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. . --- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
SSL / TLS compression | SPDY service|CVE-2012-4929
Hello Tomcat support team, Thanks for your continuous support. Problem : Security issue | CVE-2012-4929 Overview: The TLS protocol 1.2 and earlier, as used in Mozilla Firefox, Google Chrome, Qt, and other products, can encrypt compressed data without properly obfuscating the length of the unencrypted data, which allows man-in-the-middle attackers to obtain plaintext HTTP headers by observing length differences during a series of guesses in which a string in an HTTP request potentially matches an unknown string in an HTTP header, aka a CRIME attack. The remote service has one of two configurations that are known to be required for the CRIME attack: - SSL / TLS compression is enabled. The attack allows an attacker to reveal sensitive information that is being passed inside an encrypted SSL tunnel. The most straightforward way to leverage this vulnerability is to use it to retrieve cookies being passed by an application and use them to login to the application as the victim The TLS protocol encrypts compressed data without properly obfuscating the length of the unencrypted data. Successful exploitation may result in a remote attacker conducting man-in-the-middle attacks. According to our analysis seems: (No SSL compression in IE, Firefox has disabled it from V15.0 in 2012 and already disbaled in latest version of chrome).- TLS advertises the SPDY protocol earlier than version 4. Solution: Disable compression and / or the SPDY service. So how to disable compression and / or the SPDY service in tomcat6. Regards, Rahul Kumar Singh DISCLAIMER: --- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. It shall not attach any liability on the originator or NEC or its affiliates. Any views or opinions presented in this email are solely those of the author and may not necessarily reflect the opinions of NEC or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of the author of this e-mail is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. . ---
RE: SSL / TLS compression | SPDY service|CVE-2012-4929
Ok I understand, Is it mentioned somewhere in tomcat spec. That it is not being used in JSSE connector. Based on the above answer my next question: If any browser is affected with this CVE , then what happen, e.g IE-11. If user tries to open the web application from IE-11 , then what happen. From: Ognjen Blagojevic [ognjen.d.blagoje...@gmail.com] Sent: Friday, March 27, 2015 8:34 PM To: Tomcat Users List Subject: Re: SSL / TLS compression | SPDY service|CVE-2012-4929 Rahul, On 27.3.2015 14:42, Rahul Kumar Singh wrote: So how to disable compression and / or the SPDY service in tomcat6. If you are using JSSE connectors (BIO/NIO/NIO2), compression is already disabled because JSSE does not support it, and there is no support for SPDY protocol on those connectors. If you are using APR/Native connector, if you didn't explicitly enabled it, SPDY is disabled by default. You may disable TLS compression using APR/Native connector parameter SSLDisableCompression=true. -Ognjen - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org DISCLAIMER: --- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. It shall not attach any liability on the originator or NEC or its affiliates. Any views or opinions presented in this email are solely those of the author and may not necessarily reflect the opinions of NEC or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of the author of this e-mail is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. . --- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Tomcat 7 (7.0.54) memory consuption is very high(3 times) than Tomcat 6 (6.0.28)
Hello Tomcat support Team, One important observation from the GC logs reported in tomcat 7. GC execution time is increased in tomcat7, which increased the young gen capacity of java heap and resident memory of tomcat process is reported by Linux top , which is bounded by the java virtual memory. That is why resident memory is also increase. Could anyone from apache Group look into this observation/problem. GC Logs are attached in the mail for both tomcat 6 and tomcat 7. = Regards, Rahul Kumar Singh -Original Message- From: André Warnier [mailto:a...@ice-sa.com] Sent: Wednesday, March 25, 2015 4:11 AM To: Tomcat Users List Subject: Re: Tomcat 7 (7.0.54) memory consuption is very high(3 times) than Tomcat 6 (6.0.28) Rainer Jung wrote: Some numbers from a test here on RHEL 6, using Java 1.7.0_76 and TC 6.0.43, 7.0.59 and 8.0.20. Measurement is taken directly after start (a) plus once after one request to a non-existing page and two full GCs (b). Only manager was deployed, not example webapps or docs. GC was run using jcmd PID GC.run Numbers from ps RSSa RSSb SZaSZbVSZaVSZb tc6 62372 68336 272952 273532 1091808 1094128 tc7 63608 70456 271710 271978 1086840 1087912 tc8 72576 79140 272257 272525 1089028 1090100 Differences between TC6 and 7 marginal, differences between tc7 and 8 only noticable in RSS, around 9MB. Numbers from jstat -gc. First Capacity: Semi Spaces start with 512KB and grow to 768.0KB (TC6), 896.0KB (tc7) and 1024.0 (tc8). Those indicate increasing allocations, but are not relevant for total memory use. Edena EdenbOldaOldb Perma Permb tc6 4288.0 6656.0 10688.0 16320.0 21248.0 21248.0 tc7 4288.0 7168.0 10688.0 17904.0 21248.0 21248.0 tc8 6144.0 8640.0 15316.0 21316.0 21248.0 21248.0 Again this is capacity so including garbage and unused. We see that Perm is unchanged. For all versions Eden grows by 2.4-2.9 MB due to allocation activity. Numbers for tc6 and 7 are again very similar, tc8 numbers are slightly higher already after startup. Old (Tenured) grows by about 6-7MB, again very similar for tc 6 and tc 7 and slightly higher for TC 8. Now for the used numbers after GC, which are more relevant (allocation rates are another topic): Edena EdenbOldaOldb Perma Permb tc6 2910.8 69.3 7231.7 7984.1 13923.0 14429.1 tc7 2326.1 73.8 8504.4 9661.2 13910.1 15340.1 tc8 203.7 60.9 10577.6 12599.7 16183.3 17653.8 So the live objects are Edenb+Oldb: Edenb+Oldb tc6 8053.4 tc7 9735.0 tc8 12660.6 And here we see some increase but the total amount of about 2MB between tc 6 and 7 and about another 3 MB between 7 and 8 seems to be not really problematic. The same holds true for perm, there's an increase of about 1MB between 6 and 7 and 2 MB between 7 and 8. Finally: where does the difference between RSS, Sz and the sum of heap and eden come from? Example for TC 8 case b: RSS: 79140 SZ: 272525 Sum of RSS due to smaps: 79088 so roughly consistent. S0+S1+E+O+P capacity: 53252, but Rss 40872, so a delta of 38MB to RSS. smaps entries that can be identified: TypeSize Rss Perm 21248 17656 Old21316 15040 Eden+S0+S1 10688 8176 libjvm.so 11732 7712 (read-only) Then about 21 thread stack reservations, total Size 21676, total Rss 2804. So the delta goes down to 38 - 7.7 - 2.8 = 28MB. Some more segments, that I can't fully interprete are: Size Rssfrom -to Perm File 8852 7648 7f281800-7f28188a5000 rw-p 8940 6496 7f281400-7f28148bb000 rw-p 51116 4064 7f283527-7f283845b000 rw-p 2496 2048 7f283500-7f283527 rwxp 1788 1732 7f283d443000-7f283d602000 r--s .../lib/rt.jar 3304 1444 7f282c00-7f282c33a000 rw-p 784 784 7f283f1d9000-7f283f29d000 rw-p .../lib/amd64/server/libjvm.so 1564 648 3f6d20-3f6d387000 r-xp /lib64/libc-2.12.so 536 524 7f283000-7f2830086000 rw-p 272 208 7f283f29d000-7f283f2e1000 rw-p and those nearly make up the missing 28MB Rss (whatever they are). I don't know how to describe the above, nor the dedication that went into gathering that (and at this late European hour at that). Brilliant ? In any case, thank you. But now, for the mere humans among us, what does it mean in terms of the OP and his original question : why does Tomcat 7 seem to be using 70 MB more memory at startup than Tomcat 6 ? Is it : - it doesn't matter. The numbers shown are wrong, and if you run 10 instances of Tomcat 7 at the same time, you will see that they are not really using 700 MB more than before. or - it is normal and expected. Tomcat 7 - because of the new Servlet Spec - needs to borogrove the watchamecalits, and this is using 70 MB more heap than before. In return, you get a 25% performance improvement later
RE: Tomcat 7 (7.0.54) memory consuption is very high(3 times) than Tomcat 6 (6.0.28)
Some of the observations during the GC call monitoring / heap dump from JMAP: Tomcat Version Stages Java Heap Usage Java Heap Capacity Virtual memory (by top) Resident Memory (by top) Tomcat 6 After tomcat startup 17.18 MB 367.8 MB 6712 MB 175 MB After functional operation 18.77 MB 367.8 MB 6745 MB 207 MB After Operation 45.51 MB 331.0 MB 6745 MB 235 MB Tomcat 7 After tomcat startup 57.90 MB 655.8 MB 6795 MB 423 MB After functional operation 97.64 MB 655.8 MB 6828 MB 558 MB After Operation 142.58 MB 1864.0 MB 6828 MB 1000 MB Observation: • Top’s reported virtual memory is approximately same. • Resident memory correlates with Java heap capacity. Refer to next slide for details. -Original Message- From: André Warnier [mailto:a...@ice-sa.com] Sent: Tuesday, March 24, 2015 9:00 PM To: Tomcat Users List Subject: Re: Tomcat 7 (7.0.54) memory consuption is very high(3 times) than Tomcat 6 (6.0.28) Johan Compagner wrote: I understand all that. But the basic view, from a sysadmin's point of view is this : Tomcat 6(6.0.28) Virtual Memory: 6772 MB Resident Memory: 81 MB Tomcat 7(7.0.54) Virtual Memory: 6778 MB Resident Memory: 148 MB what does that Resident exactly mean here? i guess the total heap the java vm has taken after startup? Because that could be quite logical, maybe tomcat 7 needs a lot more data because of that annotation scanning Doesn't it load in way more classes? All that processing and then also maybe loading in up front way more classes then before will mean that the heap (and none heap in this scenario) is already way more loaded. That's the kind of thing that I mean. The OP is asking : assuming the same host, the same JVM, the same startup parameters, the same default ROOT application, why does Tomcat 7 seem to be using 70 MB more RAM at startup than Tomcat 6 ? The answer can be : - it doesn't matter. The numbers shown are wrong, and if you run 10 instances of Tomcat 7 at the same time, you will see that they are not really using 700 MB more than before. or - it is normal and expected. Tomcat 7 - because of the new Servlet Spec - needs to borogrove the watchamecalits, and this is using 70 MB more heap than before. In return, you get a 25% performance improvement later.. or - we have no clue. It does not happen on other machines, so there must be something special on your machine, and to find out what we need heap dumps. or ??? The OP just wants to know which, but instead we are just telling him that he should take heap dumps or examine cryptic memory allocation displays etc.. He may not be adverse to that in the end, but some basic preliminary guidance may be helpful. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.orgmailto:users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.orgmailto:users-h...@tomcat.apache.org DISCLAIMER: --- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. It shall not attach any liability on the originator or NEC or its affiliates. Any views or opinions presented in this email are solely those of the author and may not necessarily reflect the opinions of NEC or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of the author of this e-mail is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. . ---
RE: Tomcat 7 (7.0.54) memory consuption is very high(3 times) than Tomcat 6 (6.0.28)
Exact command-line that starts Tomcat7 (as given e.g. by ps -ef | grep java) : Tomcat7 application user 5597 1 38 02:11 ?00:00:13 /usr/lib/jvm/java-1.7.0-openjdk.x86_64/bin/java -Djava.util.logging.config.file=/opt/tomcat/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.endorsed.dirs=/opt/tomcat/endorsed -classpath /opt/tomcat/bin/bootstrap.jar:/opt/tomcat/bin/tomcat-juli.jar -Dcatalina.base=/opt/tomcat -Dcatalina.home=/opt/tomcat -Djava.io.tmpdir=/opt/tomcat/temp org.apache.catalina.startup.Bootstrap start Exact command-line that starts Tomcat6 (as given e.g. by ps -ef | grep java) : Tomcat6 application user 2860 1 0 10:34 ?00:01:35 /usr/lib/jvm/java-1.7.0-openjdk.x86_64/bin/java -Djava.util.logging.config.file=/opt/tomcat/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.endorsed.dirs=/opt/tomcat/endorsed -classpath /opt/tomcat/bin/bootstrap.jar -Dcatalina.base=/opt/tomcat -Dcatalina.home=/opt/tomcat -Djava.io.tmpdir=/opt/tomcat/temp org.apache.catalina.startup.Bootstrap start Also, which exact example Tomcat application are you deploying in both cases above ? The default application came with apache tomcat 6 and tomcat7 -Original Message- From: André Warnier [mailto:a...@ice-sa.com] Sent: Monday, March 23, 2015 5:27 PM To: Tomcat Users List Subject: Re: Tomcat 7 (7.0.54) memory consuption is very high(3 times) than Tomcat 6 (6.0.28) Rahul Kumar Singh wrote: Hello André Warnier, Thanks for your response. That should be much easier and quicker to check this by yourself, as you obviously already have the 2 Tomcat versions up and running. Remove your own application, deploy one of the standard Tomcat-examples applications, and have a look. Yes, we have done the above suggested exercise. And got the below output of top command result. Development environment: === RAM: 25 GB CPU: CPU Intel(R) Xeon(R) CPU X5450 @ 3.00GHz OS: RHEL Linux (5.8) == Tomcat 6(6.0.28) Virtual Memory: 6772 MB Resident Memory: 81 MB Exact command-line that starts Tomcat6 (as given e.g. by ps -ef | grep java) : Tomcat 7(7.0.54) Virtual Memory: 6778 MB Resident Memory: 148 MB Exact command-line that starts Tomcat7 (as given e.g. by ps -ef | grep java) : (That is for us to know if, for example, there are any command-line parameters that might explain the difference) Also, which exact example Tomcat application are you deploying in both cases above ? Note: these questions are not asked to annoy you, or to delay a response. You realise that Tomcat is open-source free software, and that the people manning this forum are doing that for free, on their own time. Also simulating your case will require someone to spend some time creating the same setup as yours. So all in all, the more precise information which you provide, the more time you allow these people to save in order to give you an accurate answer, and the faster you will have that answer. And if you want to know about heap dumps, this looks like a good start : http://www.jahia.com/community/blogs/tips-and-tricks-for-analyzing-java-virtual-machine (searching Google for tomcat heap dump) If there is still a big difference between v6 and v7, then come back here. At least then there will be a reproducible test case for someone here to have a closer look. And if there is not a big difference, then obviously it must have something to with your application. And then, follow Mark's already-given advice to find out what. The initial value is also somewhere double of tomcat6. Regards, Rahul Kumar Singh -Original Message- From: André Warnier [mailto:a...@ice-sa.com] Sent: Monday, March 23, 2015 2:32 PM To: Tomcat Users List Subject: Re: Tomcat 7 (7.0.54) memory consuption is very high(3 times) than Tomcat 6 (6.0.28) Rahul Kumar Singh wrote: Dear Thomas, Thanks for your quick response, Tomcat doesn't use anything like that much memory on its own. I suspect it is the application although the difference between Tomcat 6 and Tomcat 7 is unexpected. Ok, I understand, But could you please confirm us theoretically that is there any difference in initial memory requirement of tomcat6 and tomcat 7? That should be much easier and quicker to check this by yourself, as you obviously already have the 2 Tomcat versions up and running. Remove your own application, deploy one of the standard Tomcat-examples applications, and have a look. If there is still a big difference between v6 and v7, then come back here. At least then there will be a reproducible test case for someone here to have a closer look. And if there is not a big difference, then obviously it must have something to with your application. And then, follow Mark's already-given advice to find out what
RE: Tomcat 7 (7.0.54) memory consuption is very high(3 times) than Tomcat 6 (6.0.28)
Plz ignore previous mail -Original Message- From: Rahul Kumar Singh Sent: Monday, March 23, 2015 6:05 PM To: Tomcat Users List Subject: RE: Tomcat 7 (7.0.54) memory consuption is very high(3 times) than Tomcat 6 (6.0.28) Exact command-line that starts Tomcat6 (as given e.g. by ps -ef | grep java) : application user 2860 1 0 10:34 ?00:01:35 /usr/lib/jvm/java-1.7.0-openjdk.x86_64/bin/java -Djava.util.logging.config.file=/opt/tomcat/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.endorsed.dirs=/opt/tomcat/endorsed -classpath /opt/tomcat/bin/bootstrap.jar -Dcatalina.base=/opt/tomcat -Dcatalina.home=/opt/tomcat -Djava.io.tmpdir=/opt/hydra-tomcat/temp org.apache.catalina.startup.Bootstrap start Exact command-line that starts Tomcat7 (as given e.g. by ps -ef | grep java) : -Original Message- From: André Warnier [mailto:a...@ice-sa.com] Sent: Monday, March 23, 2015 5:27 PM To: Tomcat Users List Subject: Re: Tomcat 7 (7.0.54) memory consuption is very high(3 times) than Tomcat 6 (6.0.28) Rahul Kumar Singh wrote: Hello André Warnier, Thanks for your response. That should be much easier and quicker to check this by yourself, as you obviously already have the 2 Tomcat versions up and running. Remove your own application, deploy one of the standard Tomcat-examples applications, and have a look. Yes, we have done the above suggested exercise. And got the below output of top command result. Development environment: === RAM: 25 GB CPU: CPU Intel(R) Xeon(R) CPU X5450 @ 3.00GHz OS: RHEL Linux (5.8) == Tomcat 6(6.0.28) Virtual Memory: 6772 MB Resident Memory: 81 MB Exact command-line that starts Tomcat6 (as given e.g. by ps -ef | grep java) : Tomcat 7(7.0.54) Virtual Memory: 6778 MB Resident Memory: 148 MB Exact command-line that starts Tomcat7 (as given e.g. by ps -ef | grep java) : (That is for us to know if, for example, there are any command-line parameters that might explain the difference) Also, which exact example Tomcat application are you deploying in both cases above ? Note: these questions are not asked to annoy you, or to delay a response. You realise that Tomcat is open-source free software, and that the people manning this forum are doing that for free, on their own time. Also simulating your case will require someone to spend some time creating the same setup as yours. So all in all, the more precise information which you provide, the more time you allow these people to save in order to give you an accurate answer, and the faster you will have that answer. And if you want to know about heap dumps, this looks like a good start : http://www.jahia.com/community/blogs/tips-and-tricks-for-analyzing-java-virtual-machine (searching Google for tomcat heap dump) If there is still a big difference between v6 and v7, then come back here. At least then there will be a reproducible test case for someone here to have a closer look. And if there is not a big difference, then obviously it must have something to with your application. And then, follow Mark's already-given advice to find out what. The initial value is also somewhere double of tomcat6. Regards, Rahul Kumar Singh -Original Message- From: André Warnier [mailto:a...@ice-sa.com] Sent: Monday, March 23, 2015 2:32 PM To: Tomcat Users List Subject: Re: Tomcat 7 (7.0.54) memory consuption is very high(3 times) than Tomcat 6 (6.0.28) Rahul Kumar Singh wrote: Dear Thomas, Thanks for your quick response, Tomcat doesn't use anything like that much memory on its own. I suspect it is the application although the difference between Tomcat 6 and Tomcat 7 is unexpected. Ok, I understand, But could you please confirm us theoretically that is there any difference in initial memory requirement of tomcat6 and tomcat 7? That should be much easier and quicker to check this by yourself, as you obviously already have the 2 Tomcat versions up and running. Remove your own application, deploy one of the standard Tomcat-examples applications, and have a look. If there is still a big difference between v6 and v7, then come back here. At least then there will be a reproducible test case for someone here to have a closer look. And if there is not a big difference, then obviously it must have something to with your application. And then, follow Mark's already-given advice to find out what. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org DISCLAIMER: --- The contents of this e-mail and any attachment(s) are confidential
RE: Tomcat 7 (7.0.54) memory consuption is very high(3 times) than Tomcat 6 (6.0.28)
Exact command-line that starts Tomcat6 (as given e.g. by ps -ef | grep java) : application user 2860 1 0 10:34 ?00:01:35 /usr/lib/jvm/java-1.7.0-openjdk.x86_64/bin/java -Djava.util.logging.config.file=/opt/tomcat/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.endorsed.dirs=/opt/tomcat/endorsed -classpath /opt/tomcat/bin/bootstrap.jar -Dcatalina.base=/opt/tomcat -Dcatalina.home=/opt/tomcat -Djava.io.tmpdir=/opt/hydra-tomcat/temp org.apache.catalina.startup.Bootstrap start Exact command-line that starts Tomcat7 (as given e.g. by ps -ef | grep java) : -Original Message- From: André Warnier [mailto:a...@ice-sa.com] Sent: Monday, March 23, 2015 5:27 PM To: Tomcat Users List Subject: Re: Tomcat 7 (7.0.54) memory consuption is very high(3 times) than Tomcat 6 (6.0.28) Rahul Kumar Singh wrote: Hello André Warnier, Thanks for your response. That should be much easier and quicker to check this by yourself, as you obviously already have the 2 Tomcat versions up and running. Remove your own application, deploy one of the standard Tomcat-examples applications, and have a look. Yes, we have done the above suggested exercise. And got the below output of top command result. Development environment: === RAM: 25 GB CPU: CPU Intel(R) Xeon(R) CPU X5450 @ 3.00GHz OS: RHEL Linux (5.8) == Tomcat 6(6.0.28) Virtual Memory: 6772 MB Resident Memory: 81 MB Exact command-line that starts Tomcat6 (as given e.g. by ps -ef | grep java) : Tomcat 7(7.0.54) Virtual Memory: 6778 MB Resident Memory: 148 MB Exact command-line that starts Tomcat7 (as given e.g. by ps -ef | grep java) : (That is for us to know if, for example, there are any command-line parameters that might explain the difference) Also, which exact example Tomcat application are you deploying in both cases above ? Note: these questions are not asked to annoy you, or to delay a response. You realise that Tomcat is open-source free software, and that the people manning this forum are doing that for free, on their own time. Also simulating your case will require someone to spend some time creating the same setup as yours. So all in all, the more precise information which you provide, the more time you allow these people to save in order to give you an accurate answer, and the faster you will have that answer. And if you want to know about heap dumps, this looks like a good start : http://www.jahia.com/community/blogs/tips-and-tricks-for-analyzing-java-virtual-machine (searching Google for tomcat heap dump) If there is still a big difference between v6 and v7, then come back here. At least then there will be a reproducible test case for someone here to have a closer look. And if there is not a big difference, then obviously it must have something to with your application. And then, follow Mark's already-given advice to find out what. The initial value is also somewhere double of tomcat6. Regards, Rahul Kumar Singh -Original Message- From: André Warnier [mailto:a...@ice-sa.com] Sent: Monday, March 23, 2015 2:32 PM To: Tomcat Users List Subject: Re: Tomcat 7 (7.0.54) memory consuption is very high(3 times) than Tomcat 6 (6.0.28) Rahul Kumar Singh wrote: Dear Thomas, Thanks for your quick response, Tomcat doesn't use anything like that much memory on its own. I suspect it is the application although the difference between Tomcat 6 and Tomcat 7 is unexpected. Ok, I understand, But could you please confirm us theoretically that is there any difference in initial memory requirement of tomcat6 and tomcat 7? That should be much easier and quicker to check this by yourself, as you obviously already have the 2 Tomcat versions up and running. Remove your own application, deploy one of the standard Tomcat-examples applications, and have a look. If there is still a big difference between v6 and v7, then come back here. At least then there will be a reproducible test case for someone here to have a closer look. And if there is not a big difference, then obviously it must have something to with your application. And then, follow Mark's already-given advice to find out what. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org DISCLAIMER: --- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. It shall not attach any liability on the originator or NEC or its affiliates. Any views or opinions presented in this email are solely those of the author and may not necessarily reflect
RE: Tomcat 7 (7.0.54) memory consuption is very high(3 times) than Tomcat 6 (6.0.28)
Dear Thomas, Thanks for your quick response, Tomcat doesn't use anything like that much memory on its own. I suspect it is the application although the difference between Tomcat 6 and Tomcat 7 is unexpected. Ok, I understand, But could you please confirm us theoretically that is there any difference in initial memory requirement of tomcat6 and tomcat 7? Above question is because of the below observation. 1-The deployed application is same. Even no difference in deployment scenario and no change in application. 2-The underlining java environment is also same. (java version 1.7.0_09-icedtea OpenJDK Runtime Environment (rhel-2.3.3.el5.1-x86_64) OpenJDK 64-Bit Server VM (build 23.2-b09, mixed mode)), 3-The initial memory of tomcat is increased by three times. Regards, Rahul Kumar Singh -Original Message- From: Mark Thomas [mailto:ma...@apache.org] Sent: Monday, March 23, 2015 1:13 PM To: Tomcat Users List Subject: Re: Tomcat 7 (7.0.54) memory consuption is very high(3 times) than Tomcat 6 (6.0.28) On 23/03/2015 07:05, Rahul Kumar Singh wrote: Hi Tomcat support team, While upgrading Tomcat from tomcat 6(6.0.28) to tomcat 7 (7.0.54). the following problem happens. TOMCAT 7 (7.0.54) memory consumption increased about approx. 3 times compare to the existing tomcat 6 (6.0.28) memory consumption. Tomcat 6.0.28 memory consumption MAP. RESIDENT MEMORY:300-400 MB Approx. Tomcat 7.0.54 memory consumption MAP. RESIDENT MEMORY:900-1800 MB Approx. Underline java platform is same(OpenJDK7) in both tomcat 6 and tomcat 7. Now question is that, why the memory consumption increased about 3 times in Tomcat 7. Tomcat doesn't use anything like that much memory on its own. I suspect it is the application although the difference between Tomcat 6 and Tomcat 7 is unexpected. The only way to find out what is going on is to look at what is using that memory. You'll need to take a heap dump and/or use a profiler to find out. Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.orgmailto:users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.orgmailto:users-h...@tomcat.apache.org DISCLAIMER: --- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. It shall not attach any liability on the originator or NEC or its affiliates. Any views or opinions presented in this email are solely those of the author and may not necessarily reflect the opinions of NEC or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of the author of this e-mail is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. . ---
RE: Tomcat 7 (7.0.54) memory consuption is very high(3 times) than Tomcat 6 (6.0.28)
Really? The Tomcat ROOT web application is taking up 3 times as much heap space in Tomcat 6 as Tomcat 7? Yes. -Original Message- From: Christopher Schultz [mailto:ch...@christopherschultz.net] Sent: Monday, March 23, 2015 7:52 PM To: Tomcat Users List Subject: Re: Tomcat 7 (7.0.54) memory consuption is very high(3 times) than Tomcat 6 (6.0.28) -BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Rahul, On 3/23/15 8:39 AM, Rahul Kumar Singh wrote: Exact command-line that starts Tomcat7 (as given e.g. by ps -ef | grep java) : Tomcat7 application user 5597 1 38 02:11 ?00:00:13 /usr/lib/jvm/java-1.7.0-openjdk.x86_64/bin/java -Djava.util.logging.config.file=/opt/tomcat/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.endorsed.dirs=/opt/tomcat/endorsed -classpath /opt/tomcat/bin/bootstrap.jar:/opt/tomcat/bin/tomcat-juli.jar -Dcatalina.base=/opt/tomcat -Dcatalina.home=/opt/tomcat -Djava.io.tmpdir=/opt/tomcat/temp org.apache.catalina.startup.Bootstrap start Exact command-line that starts Tomcat6 (as given e.g. by ps -ef | grep java) : Tomcat6 application user 2860 1 0 10:34 ?00:01:35 /usr/lib/jvm/java-1.7.0-openjdk.x86_64/bin/java -Djava.util.logging.config.file=/opt/tomcat/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.endorsed.dirs=/opt/tomcat/endorsed -classpath /opt/tomcat/bin/bootstrap.jar -Dcatalina.base=/opt/tomcat -Dcatalina.home=/opt/tomcat -Djava.io.tmpdir=/opt/tomcat/temp org.apache.catalina.startup.Bootstrap start Also, which exact example Tomcat application are you deploying in both cases above ? The default application came with apache tomcat 6 and tomcat7 Really? The Tomcat ROOT web application is taking up 3 times as much heap space in Tomcat 6 as Tomcat 7? - -chris -Original Message- From: André Warnier [mailto:a...@ice-sa.com] Sent: Monday, March 23, 2015 5:27 PM To: Tomcat Users List Subject: Re: Tomcat 7 (7.0.54) memory consuption is very high(3 times) than Tomcat 6 (6.0.28) Rahul Kumar Singh wrote: Hello André Warnier, Thanks for your response. That should be much easier and quicker to check this by yourself, as you obviously already have the 2 Tomcat versions up and running. Remove your own application, deploy one of the standard Tomcat-examples applications, and have a look. Yes, we have done the above suggested exercise. And got the below output of top command result. Development environment: === RAM: 25 GB CPU: CPU Intel(R) Xeon(R) CPU X5450 @ 3.00GHz OS: RHEL Linux (5.8) == Tomcat 6(6.0.28) Virtual Memory: 6772 MB Resident Memory: 81 MB Exact command-line that starts Tomcat6 (as given e.g. by ps -ef | grep java) : Tomcat 7(7.0.54) Virtual Memory: 6778 MB Resident Memory: 148 MB Exact command-line that starts Tomcat7 (as given e.g. by ps -ef | grep java) : (That is for us to know if, for example, there are any command-line parameters that might explain the difference) Also, which exact example Tomcat application are you deploying in both cases above ? Note: these questions are not asked to annoy you, or to delay a response. You realise that Tomcat is open-source free software, and that the people manning this forum are doing that for free, on their own time. Also simulating your case will require someone to spend some time creating the same setup as yours. So all in all, the more precise information which you provide, the more time you allow these people to save in order to give you an accurate answer, and the faster you will have that answer. And if you want to know about heap dumps, this looks like a good start : http://www.jahia.com/community/blogs/tips-and-tricks-for-analyzing-jav a-virtual-machine (searching Google for tomcat heap dump) If there is still a big difference between v6 and v7, then come back here. At least then there will be a reproducible test case for someone here to have a closer look. And if there is not a big difference, then obviously it must have something to with your application. And then, follow Mark's already-given advice to find out what. The initial value is also somewhere double of tomcat6. Regards, Rahul Kumar Singh -Original Message- From: André Warnier [mailto:a...@ice-sa.com] Sent: Monday, March 23, 2015 2:32 PM To: Tomcat Users List Subject: Re: Tomcat 7 (7.0.54) memory consuption is very high(3 times) than Tomcat 6 (6.0.28) Rahul Kumar Singh wrote: Dear Thomas, Thanks for your quick response, Tomcat doesn't use anything like that much memory on its own. I suspect it is the application although the difference between Tomcat 6 and Tomcat 7 is unexpected. Ok, I understand, But could you please confirm us theoretically that is there any difference in initial memory
RE: Tomcat 7 (7.0.54) memory consuption is very high(3 times) than Tomcat 6 (6.0.28)
Just remember that the numbers out of top are at best approximations, and, as Rainer pointed out, not taking measurements immediately after a GC is a guarantee of an apples versus oranges comparison. The appropriate tools (e.g., VisualVM) must be used for any rational analysis. During the analysis, top is referred for memory report too. -Original Message- From: Caldarale, Charles R [mailto:chuck.caldar...@unisys.com] Sent: Monday, March 23, 2015 8:03 PM To: Tomcat Users List Subject: RE: Tomcat 7 (7.0.54) memory consuption is very high(3 times) than Tomcat 6 (6.0.28) From: Christopher Schultz [mailto:ch...@christopherschultz.net] Subject: Re: Tomcat 7 (7.0.54) memory consuption is very high(3 times) than Tomcat 6 (6.0.28) Really? The Tomcat ROOT web application is taking up 3 times as much heap space in Tomcat 6 as Tomcat 7? Just remember that the numbers out of top are at best approximations, and, as Rainer pointed out, not taking measurements immediately after a GC is a guarantee of an apples versus oranges comparison. The appropriate tools (e.g., VisualVM) must be used for any rational analysis. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org DISCLAIMER: --- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. It shall not attach any liability on the originator or NEC or its affiliates. Any views or opinions presented in this email are solely those of the author and may not necessarily reflect the opinions of NEC or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of the author of this e-mail is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. . --- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Tomcat 7 (7.0.54) memory consuption is very high(3 times) than Tomcat 6 (6.0.28)
Hi Tomcat support team, While upgrading Tomcat from tomcat 6(6.0.28) to tomcat 7 (7.0.54). the following problem happens. TOMCAT 7 (7.0.54) memory consumption increased about approx. 3 times compare to the existing tomcat 6 (6.0.28) memory consumption. Tomcat 6.0.28 memory consumption MAP. RESIDENT MEMORY:300-400 MB Approx. Tomcat 7.0.54 memory consumption MAP. RESIDENT MEMORY:900-1800 MB Approx. Underline java platform is same(OpenJDK7) in both tomcat 6 and tomcat 7. Now question is that, why the memory consumption increased about 3 times in Tomcat 7. Regards, Rahul Kumar Singh DISCLAIMER: --- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. It shall not attach any liability on the originator or NEC or its affiliates. Any views or opinions presented in this email are solely those of the author and may not necessarily reflect the opinions of NEC or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of the author of this e-mail is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. . ---
RE: Tomcat 7 (7.0.54) memory consuption is very high(3 times) than Tomcat 6 (6.0.28)
Hello André Warnier, Thanks for your response. That should be much easier and quicker to check this by yourself, as you obviously already have the 2 Tomcat versions up and running. Remove your own application, deploy one of the standard Tomcat-examples applications, and have a look. Yes, we have done the above suggested exercise. And got the below output of top command result. Development environment: === RAM: 25 GB CPU: CPU Intel(R) Xeon(R) CPU X5450 @ 3.00GHz OS: RHEL Linux (5.8) == Tomcat 6(6.0.28) Virtual Memory: 6772 MB Resident Memory: 81 MB Tomcat 7(7.0.54) Virtual Memory: 6778 MB Resident Memory: 148 MB If there is still a big difference between v6 and v7, then come back here. At least then there will be a reproducible test case for someone here to have a closer look. And if there is not a big difference, then obviously it must have something to with your application. And then, follow Mark's already-given advice to find out what. The initial value is also somewhere double of tomcat6. Regards, Rahul Kumar Singh -Original Message- From: André Warnier [mailto:a...@ice-sa.com] Sent: Monday, March 23, 2015 2:32 PM To: Tomcat Users List Subject: Re: Tomcat 7 (7.0.54) memory consuption is very high(3 times) than Tomcat 6 (6.0.28) Rahul Kumar Singh wrote: Dear Thomas, Thanks for your quick response, Tomcat doesn't use anything like that much memory on its own. I suspect it is the application although the difference between Tomcat 6 and Tomcat 7 is unexpected. Ok, I understand, But could you please confirm us theoretically that is there any difference in initial memory requirement of tomcat6 and tomcat 7? That should be much easier and quicker to check this by yourself, as you obviously already have the 2 Tomcat versions up and running. Remove your own application, deploy one of the standard Tomcat-examples applications, and have a look. If there is still a big difference between v6 and v7, then come back here. At least then there will be a reproducible test case for someone here to have a closer look. And if there is not a big difference, then obviously it must have something to with your application. And then, follow Mark's already-given advice to find out what. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org DISCLAIMER: --- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. It shall not attach any liability on the originator or NEC or its affiliates. Any views or opinions presented in this email are solely those of the author and may not necessarily reflect the opinions of NEC or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of the author of this e-mail is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. . --- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Tomcat 7 (7.0.54) memory consuption is very high(3 times) than Tomcat 6 (6.0.28)
Also interesting is cat /proc/PID/maps but here one would need to calculate sizes per line from the two hex addresses given at the start of each line. Something like: cat /proc/PID/maps | perl -n -e '($a,$b)=split(/[- ]/);print hex($b)-hex($a), , $_;' | sort -n (replace PID by the current Tomcat java process id). Command: cat /proc/19487/maps | perl -n -e '($a,$b)=split(/[- ]/);print hex($b) -hex($a), , $_;' |sort -n abc.txt OUTPUT 0d4b8000-0e736000 rw-p 0d4b8000 00:00 0 [heap] ff60-ffe0 ---p 00:00 0 [vsyscall] 2aaab000-2aab3000 r--s 00061000 09:01 2519920 /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.9.x86_64/jre/lib/ext/gnome-java-bridge.jar 2aab3000-2aab5000 r--s 6000 09:01 1834753 /opt/tomcat/bin/bootstrap.jar 2aab5000-2aab6000 r--s 5000 09:01 1834758 /opt/tomcat/bin/commons-daemon.jar 2aab6000-2aab8000 r--s 8000 09:01 1834770 /opt/tomcat/bin/tomcat-juli.jar 2aab8000-2aac5000 r-xp 09:01 2519898 /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.9.x86_64/jre/lib/amd64/libverify.so 2aac5000-2acc4000 ---p d000 09:01 2519898 /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.9.x86_64/jre/lib/amd64/libverify.so 2acc4000-2acc6000 rw-p c000 09:01 2519898 /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.9.x86_64/jre/lib/amd64/libverify.so 2acc6000-2acef000 r-xp 09:01 2519877 /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.9.x86_64/jre/lib/amd64/libjava.so 2acef000-2aeee000 ---p 00029000 09:01 2519877 /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.9.x86_64/jre/lib/amd64/libjava.so 2aeee000-2aef rw-p 00028000 09:01 2519877 /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.9.x86_64/jre/lib/amd64/libjava.so 2aef-2aef1000 r--p 2aef 00:00 0 2aef1000-2aef2000 rw-p 2aef1000 00:00 0 2aef2000-2aefa000 rw-s 09:01 2056360 /tmp/hsperfdata_app/19487 2aefe000-2af08000 r-xp 09:01 261147 /lib64/libnss_files-2.5.so 2af08000-2b107000 ---p a000 09:01 261147 /lib64/libnss_files-2.5.so 2b107000-2b108000 r--p 9000 09:01 261147 /lib64/libnss_files-2.5.so 2b108000-2b109000 rw-p a000 09:01 261147 /lib64/libnss_files-2.5.so 2b109000-2b111000 r-xp 09:01 2519899 /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.9.x86_64/jre/lib/amd64/libzip.so 2b111000-2b31 ---p 8000 09:01 2519899 /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.9.x86_64/jre/lib/amd64/libzip.so 2b31-2b311000 rw-p 7000 09:01 2519899 /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.9.x86_64/jre/lib/amd64/libzip.so 2b311000-2b771000 rwxp 2b311000 00:00 0 2b771000-2e311000 rw-p 2b771000 00:00 0 2e311000-2e323000 rw-p 2e311000 00:00 0 2e323000-2e3d1000 rw-p 2e323000 00:00 0 2e3d1000-2e3e rw-p 2e3d1000 00:00 0 2e3e-2e424000 rw-p 2e3e 00:00 0 2e424000-2e51f000 rw-p 2e424000 00:00 0 2e51f000-2f3cd000 rw-p 2e51f000 00:00 0 2f3cd000-2f60c000 rw-p 2f3cd000 00:00 0 2f60c000-2f6ec000 ---p 2f60c000 00:00 0 2f6ec000-2fba2000 rw-p 2f6ec000 00:00 0 2fba2000-2fc9e000 rw-p 2fba2000 00:00 0 2fc9e000-2aaab0b4d000 rw-p 2fc9e000 00:00 0 2aaab0b4d000-2aaab0b5c000 rw-p 2aaab0b4d000 00:00 0 2aaab0b5c000-2aaab0ba rw-p 2aaab0b5c000 00:00 0 2aaab0ba-2aaace81c000 rw-p 2aaab0ba 00:00 0 2aaace81c000-2aaace9d7000 r--s 01c8f000 09:01 2519963 /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.9.x86_64/jre/lib/rt.jar 2aaace9d7000-2aaad0cd4000 rw-p 2aaace9d7000 00:00 0 2aaad0cd4000-2aaad42a3000 r--p 09:01 2227921 /usr/lib/locale/locale-archive 2aaad42a3000-2aaad42b3000 r-xp 09:01 2519890 /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.9.x86_64/jre/lib/amd64/libnio.so 2aaad42b3000-2aaad44b3000 ---p 0001 09:01 2519890 /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.9.x86_64/jre/lib/amd64/libnio.so 2aaad44b3000-2aaad44b4000 rw-p 0001 09:01 2519890 /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.9.x86_64/jre/lib/amd64/libnio.so 2aaad44b4000-2aaad44c9000 r-xp 09:01 2519889 /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.9.x86_64/jre/lib/amd64/libnet.so 2aaad44c9000-2aaad46c9000 ---p 00015000 09:01 2519889 /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.9.x86_64/jre/lib/amd64/libnet.so 2aaad46c9000-2aaad46ca000 rw-p 00015000 09:01 2519889
