On Jan 23, 2014, at 12:22 PM, Randeep <randeep...@gmail.com> wrote: > I have added -XX:+HeapDumpOnOutOfMemoryError also. > Thanks.
Please stop top posting. Post your comments inline or at the bottom, like everyone else. It makes following the conversation much easier. Dan > > > On Thu, Jan 23, 2014 at 10:49 PM, Randeep <randeep...@gmail.com> wrote: > >> I mean i'd to give full path. >> >> like this >> export JAVA_OPTS='-Xms256m -Xmx512m -Xss512k -verbose:gc >> -Xloggc:/usr/share/apache-tomcat-6.0.37/logs/heap.log' >> >> >> >> On Thu, Jan 23, 2014 at 10:47 PM, Randeep <randeep...@gmail.com> wrote: >> >>> Thanks. That worked. Anything unusual? Garbage collection is happening >>> too often? >>> >>> [root@server logs]# cat /usr/share/apache-tomcat-6.0.37/logs/heap.log >>> 1.910: [GC 16192K->1923K(260160K), 0.0150080 secs] >>> 2.454: [GC 18115K->3151K(260160K), 0.0137140 secs] >>> 2.760: [GC 19343K->3309K(260160K), 0.0058220 secs] >>> 3.648: [GC 19501K->4446K(260160K), 0.0062870 secs] >>> 4.000: [GC 20638K->5063K(260160K), 0.0080940 secs] >>> 4.305: [GC 21255K->6302K(260160K), 0.0060890 secs] >>> 4.598: [GC 22494K->6323K(260160K), 0.0062020 secs] >>> 5.664: [GC 22515K->7098K(260160K), 0.0055070 secs] >>> 6.980: [GC 23290K->8708K(260160K), 0.0176410 secs] >>> 7.332: [GC 24900K->12045K(260160K), 0.0179400 secs] >>> 7.794: [Full GC 24591K->12864K(260160K), 0.2538960 secs] >>> 8.476: [GC 29184K->14200K(260288K), 0.0080560 secs] >>> 8.939: [GC 30520K->15401K(260288K), 0.0407000 secs] >>> 9.379: [GC 31721K->16897K(260288K), 0.0099850 secs] >>> 9.603: [GC 33217K->16652K(260288K), 0.0649140 secs] >>> 10.498: [GC 32972K->17768K(260288K), 0.0068540 secs] >>> 10.885: [GC 34088K->18538K(260288K), 0.0084330 secs] >>> 11.225: [GC 34858K->19584K(260288K), 0.0071730 secs] >>> 11.466: [GC 35904K->20313K(260288K), 0.0050570 secs] >>> 12.128: [GC 36633K->20565K(260288K), 0.0042210 secs] >>> 12.385: [Full GC 26015K->20204K(260288K), 0.2847340 secs] >>> 13.817: [GC 36524K->22174K(260288K), 0.0155690 secs] >>> 14.127: [GC 38494K->25303K(260288K), 0.0816490 secs] >>> 14.671: [GC 41623K->27150K(260288K), 0.0436660 secs] >>> 15.173: [GC 43470K->28757K(260288K), 0.0140720 secs] >>> 15.414: [Full GC 32030K->28926K(260288K), 0.3071990 secs] >>> 65.004: [GC 45310K->31775K(260352K), 0.0105440 secs] >>> [root@server logs]# >>> >>> >>> On Thu, Jan 23, 2014 at 10:33 PM, André Warnier <a...@ice-sa.com> wrote: >>> >>>> Randeep wrote: >>>> >>>>> Hi all, >>>>> Thanks a lot for valuable points. Here the information you guys asked >>>>> and >>>>> the changes I made. >>>>> >>>>> OS : CentOS release 5.4 (Final) >>>>> httpd-2.2.3-65.el5.centos(front_end) +(mod_jk)+ apache-tomcat-6.0.37 >>>>> >>>>> I installed httpd using yum. >>>>> Downloaded tomcat from Apache as compressed archive(tar.gz) >>>>> >>>>> I'm using following startup script. >>>>> [root@server ~]# cat /etc/init.d/tomcat6 >>>>> #!/bin/bash >>>>> # description: Tomcat Start Stop Restart >>>>> # processname: tomcat >>>>> # chkconfig: 234 20 80 >>>>> JAVA_HOME=/usr/java/default >>>>> export JAVA_HOME >>>>> PATH=$JAVA_HOME/bin:$PATH >>>>> export PATH >>>>> CATALINA_HOME=/usr/share/apache-tomcat-6.0.37 >>>>> case $1 in >>>>> start) >>>>> sh $CATALINA_HOME/bin/startup.sh >>>>> ;; >>>>> stop) >>>>> sh $CATALINA_HOME/bin/shutdown.sh >>>>> ;; >>>>> restart) >>>>> sh $CATALINA_HOME/bin/shutdown.sh >>>>> sh $CATALINA_HOME/bin/startup.sh >>>>> ;; >>>>> esac >>>>> exit 0 >>>>> >>>>> As you said, I removed the JAVA_OPTS declaration from .bash_profile and >>>>> I >>>>> have created setenv.sh and set JAVA_OPTS in it. >>>>> [root@server bin]# pwd >>>>> /usr/share/apache-tomcat-6.0.37/bin >>>>> >>>>> [root@server bin]# cat setenv.sh >>>>> export JAVA_OPTS='-Xms256m -Xmx512m -Xss512k -verbose:gc >>>>> -Xloggc:heap.log' >>>>> >>>>> Now it shows in grep. >>>>> [root@server bin]# ps aux | grep Bootstrap >>>>> root 1100 33.7 5.4 707052 95240 pts/0 Sl 11:29 0:06 >>>>> /usr/java/default/bin/java >>>>> -Djava.util.logging.config.file=/usr/share/apache-tomcat- >>>>> 6.0.37/conf/logging.properties >>>>> -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager >>>>> -Xms256m >>>>> -Xmx512m -Xss512k -verbose:gc -Xloggc:heap.log >>>>> -Djava.endorsed.dirs=/usr/share/apache-tomcat-6.0.37/endorsed >>>>> -classpath >>>>> /usr/share/apache-tomcat-6.0.37/bin/bootstrap.jar >>>>> -Dcatalina.base=/usr/share/apache-tomcat-6.0.37 >>>>> -Dcatalina.home=/usr/share/apache-tomcat-6.0.37 >>>>> -Djava.io.tmpdir=/usr/share/apache-tomcat-6.0.37/temp >>>>> org.apache.catalina.startup.Bootstrap start >>>>> root 1158 0.0 0.0 3932 692 pts/0 R+ 11:29 0:00 grep >>>>> Bootstrap >>>>> [root@server bin]# >>>>> >>>>> But nothing came in heap.log. So I better monitor this and if I get the >>>>> OOM >>>>> again I have to increase Max limit! >>>>> >>>> >>>> Maybe you should provide a full path for the -Xloggc option ? >>>> >>>> >>>> >>>>> >>>>> On Thu, Jan 23, 2014 at 8:50 PM, Christopher Schultz < >>>>> ch...@christopherschultz.net> wrote: >>>>> >>>>> -----BEGIN PGP SIGNED MESSAGE----- >>>>>> Hash: SHA256 >>>>>> >>>>>> Randeep, >>>>>> >>>>>> On 1/23/14, 7:43 AM, Randeep wrote: >>>>>> >>>>>>> I'm getting out of memory exception errors. >>>>>>> >>>>>> :( >>>>>> >>>>>> Exception in thread "Timer-1" java.lang.OutOfMemoryError: Java heap >>>>>>> space at java.util.Arrays.copyOf(Arrays.java:2882) at >>>>>>> >>>>>>> java.lang.AbstractStringBuilder.expandCapacity( >>>>>> AbstractStringBuilder.java:100) >>>>>> >>>>>>> >>>>>>> at >>>>>> >>>>>>> java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java: >>>>>>> 572) >>>>>>> >>>>>>> >>>>>>> at java.lang.StringBuffer.append(StringBuffer.java:320) >>>>>> >>>>>>> at org.json.JSONArray.toString(JSONArray.java:834) at >>>>>>> org.json.JSONObject.valueToString(JSONObject.java:1359) at >>>>>>> org.json.JSONObject.toString(JSONObject.java:1233) at >>>>>>> com.xxx.xxx.servlet.WServlet.writeProgramJson(WServlet.java:503) at >>>>>>> com.xxx.xxx.servlet.WServlet$1.run(WServlet.java:414) at >>>>>>> java.util.TimerThread.mainLoop(Timer.java:512) at >>>>>>> java.util.TimerThread.run(Timer.java:462) >>>>>>> >>>>>> If you are trying to serialize huge JSON objects, this is going to >>>>>> happen. I'm not sure if JSON is as smart as the Java Serialization >>>>>> engine, but if you have a circular-reference in your object graph, I'd >>>>>> be willing to bet that the JSON serializer will run forever and >>>>>> exhaust your heap. >>>>>> >>>>>> It's also possible that you simply have a tiny heap and need more, >>>>>> especially if you aren't currently setting any heap parameters. >>>>>> >>>>>> Is there anyway to see currently set jvm heap size details? Any >>>>>>> linux commands. >>>>>>> >>>>>> You can attach any profiler to your app. Good luck catching this in >>>>>> the act, though, in production. >>>>>> >>>>>> You can also use "jmap -heap" which comes with the JDK. Just point it >>>>>> at a process and you'll get a heap summary from a running JVM. Make >>>>>> sure your JVM and jmap version match. >>>>>> >>>>>> I have tried creating setenv.sh and putting the new parameters in >>>>>>> it. but echo $JAVA_OPTS was not giving any value. >>>>>>> >>>>>> setenv.sh is run during Tomcat startup. Running "echo $JAVA_OPTS" from >>>>>> the command-line isn't going to reveal anything. What you want to do >>>>>> is modify setenv.sh, re-launch Tomcat, and then look at the process >>>>>> command line... something like this: >>>>>> >>>>>> $ ps aux | grep Bootstrap >>>>>> >>>>>> This should give you the whole command-line for Tomcat, and you can >>>>>> verify that your heap options have been set. >>>>>> >>>>>> So I have put in .bash_profile and run it. Then restarted tomcat6. >>>>>>> >>>>>> Don't do that: it will only work if you login using bash, and it won't >>>>>> work for other users you may have to restart Tomcat. >>>>>> >>>>>> this is the line I added in .bash_profile. JAVA_OPTS="-Xms256m >>>>>>> -Xmx512m -Xss512k -verbose:gc -Xloggc:heap.log" >>>>>>> >>>>>> You'll need to "export" JAVA_OPTS, otherwise it won't do anything for >>>>>> you. >>>>>> >>>>>> - -chris >>>>>> -----BEGIN PGP SIGNATURE----- >>>>>> Version: GnuPG v1 >>>>>> Comment: GPGTools - http://gpgtools.org >>>>>> Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ >>>>>> >>>>>> iQIcBAEBCAAGBQJS4TM+AAoJEBzwKT+lPKRYfB4QAMP4/MORiK92nK4kJ+KD9alc >>>>>> 2QYcriasb8QkPPgvYHGhGaxeLIprb1TE6tZdMSp08bHadDr+HpSbxi5xq9C6A1RJ >>>>>> fabHj9ShrXqdtTFiewPH3P/ulvaaJNPD1LeIFBwoG7/4vAIGKW48gLhaRUYcbe+z >>>>>> lV2NsZ18u38EZ9KRR8An66jX4PkwMXxl4QdQx5HDmuS/Sx8G7AfDVkuSB5PMNXbg >>>>>> TVlSEz5VeJnEGtBwnjgIa6ZSTv+iIv+nsw4WVuMe+4h1R07e1axxNismkgpUsU46 >>>>>> Ra4P7TssgdrqXFXmX4+kPNzd3xbbhPYIOOrQ0PYt6wGF0Wd9N1r/gvvViDbgghca >>>>>> wp39c3VJM8eE2vy9n0XCGYBkdq2DnRNVFV2y2xnfwecWKtDPEWfklTk8ZvbcAyxe >>>>>> hi3hxQnChCk74nxd/hvI1uNfgHcd/NwtmifwXPNM0BQCZ+AJarCbGca+a/BTTBaX >>>>>> txVIuIEf3jt/gpFu28UI8kt7Hx/PgWJ32QFyIPCbH5EYaSiKSz/Q6wCTvJTbUG4s >>>>>> GCK8AB/rGf1Z8efKlUZw2ESr1yX/VBCu9uOEK/60v+AAthiubq+O2ke1TzWKvy/I >>>>>> MxDhNiMo710w98h5hqIl5SthwXCgv3vEaaiUgDUV8zP3CoOtHL61NNZmLrMBTD2X >>>>>> 18aTMDKJ9BTvoYoZcmyV >>>>>> =IL2E >>>>>> -----END PGP SIGNATURE----- >>>>>> >>>>>> --------------------------------------------------------------------- >>>>>> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org >>>>>> For additional commands, e-mail: users-h...@tomcat.apache.org >>>>>> >>>>>> >>>>>> >>>>> >>>>> >>>> >>>> --------------------------------------------------------------------- >>>> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org >>>> For additional commands, e-mail: users-h...@tomcat.apache.org >>>> >>>> >>> >>> >>> -- >>> Randeep >>> Mob: +919447831699[kerala] >>> Mob: +919880050349[B'lore] >>> I blog here: >>> http://www.randeeppr.me/ >>> Follow me Here: >>> http://twitter.com/Randeeppr >>> Poke me here! >>> http://www.facebook.com/Randeeppr >>> A little Linux Help >>> http://www.linuxhelp.in/ >>> Work profile: >>> http://in.linkedin.com/in/randeeppr >>> >> >> >> >> -- >> Randeep >> Mob: +919447831699[kerala] >> Mob: +919880050349[B'lore] >> I blog here: >> http://www.randeeppr.me/ >> Follow me Here: >> http://twitter.com/Randeeppr >> Poke me here! >> http://www.facebook.com/Randeeppr >> A little Linux Help >> http://www.linuxhelp.in/ >> Work profile: >> http://in.linkedin.com/in/randeeppr >> > > > > -- > Randeep > Mob: +919447831699[kerala] > Mob: +919880050349[B'lore] > I blog here: > http://www.randeeppr.me/ > Follow me Here: > http://twitter.com/Randeeppr > Poke me here! > http://www.facebook.com/Randeeppr > A little Linux Help > http://www.linuxhelp.in/ > Work profile: > http://in.linkedin.com/in/randeeppr --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
