Re: [CentOS] can't get Tomcat5 to work on centos 5.1, how do I get it to work?
Filipe Brandenburger wrote: Hi, On Thu, May 8, 2008 at 6:00 PM, Rudi Ahlers [EMAIL PROTECTED] wrote: Exception in thread main java.lang.OutOfMemoryError: Cannot create It looks like it's running out of memory when starting more threads. Did you check if you have enough memory in this server to run Tomcat? I think you need at least 512MB for it, but I would recommend more. I know there are some tunings made to the JVM for it to request more memory. If you do ps -ef | grep java when Tomcat is started you will see some parameters starting with -X that will specify memory sizes, check how much it requests. I don't really know how to tweak those, check the script that starts Tomcat to see if it allows changing them. HTH, Filipe ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos What you're saying could be true, but I don't think it's the case. I have confirmed with the client, and he says that 128MB RAM would be enough for his app. [EMAIL PROTECTED] /]# /etc/init.d/tomcat5 restart Starting tomcat5: [ OK ] [EMAIL PROTECTED] /]# ps -ef | grep java tomcat 13918 1 62 02:40 ?00:00:02 /usr/lib/jvm/java/bin/java -Dcatalina.ext.dirs=/usr/share/tomcat5/shared/lib:/usr/share/tomcat5/common/lib -Dcatalina.ext.dirs=/usr/share/tomcat5/shared/lib:/usr/share/tomcat5/common/lib -Djava.endorsed.dirs=/usr/share/tomcat5/common/endorsed -classpath /usr/lib/jvm/java/lib/tools.jar:/usr/share/tomcat5/bin/bootstrap.jar:/usr/share/tomcat5/bin/commons-logging-api.jar:/usr/share/java/mx4j/mx4j-impl.jar:/usr/share/java/mx4j/mx4j-jmx.jar -Dcatalina.base=/usr/share/tomcat5 -Dcatalina.home=/usr/share/tomcat5 -Djava.io.tmpdir=/usr/share/tomcat5/temp org.apache.catalina.startup.Bootstrap start [EMAIL PROTECTED] /]# ps -ef | grep java root 14011 12038 0 02:40 pts/000:00:00 grep java [EMAIL PROTECTED] /]# free -m total used free sharedbuffers cached Mem: 256 20235 0 0 0 -/+ buffers/cache: 20235 As you can see, the first time I ran ps -ef | grep java I could see that it's starting up, but the second time, it's not running I have another terminal open with top running, and the memory usage didn't even blink when I ran it -- Kind Regards Rudi Ahlers CEO, SoftDux Web: http://www.SoftDux.com Check out my technical blog, http://blog.softdux.com for Linux or other technical stuff, or visit http://www.WebHostingTalk.co.za for Web Hosting stuff ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] can't get Tomcat5 to work on centos 5.1, how do I get it to work?
Rudi Ahlers wrote: Filipe Brandenburger wrote: Hi, On Thu, May 8, 2008 at 6:00 PM, Rudi Ahlers [EMAIL PROTECTED] wrote: Exception in thread main java.lang.OutOfMemoryError: Cannot create It looks like it's running out of memory when starting more threads. Did you check if you have enough memory in this server to run Tomcat? I think you need at least 512MB for it, but I would recommend more. I know there are some tunings made to the JVM for it to request more memory. If you do ps -ef | grep java when Tomcat is started you will see some parameters starting with -X that will specify memory sizes, check how much it requests. I don't really know how to tweak those, check the script that starts Tomcat to see if it allows changing them. What you're saying could be true, but I don't think it's the case. I have confirmed with the client, and he says that 128MB RAM would be enough for his app. The default config is probably asking for more than that. [EMAIL PROTECTED] /]# /etc/init.d/tomcat5 restart Starting tomcat5: [ OK ] [EMAIL PROTECTED] /]# ps -ef | grep java tomcat 13918 1 62 02:40 ?00:00:02 /usr/lib/jvm/java/bin/java -Dcatalina.ext.dirs=/usr/share/tomcat5/shared/lib:/usr/share/tomcat5/common/lib -Dcatalina.ext.dirs=/usr/share/tomcat5/shared/lib:/usr/share/tomcat5/common/lib -Djava.endorsed.dirs=/usr/share/tomcat5/common/endorsed -classpath /usr/lib/jvm/java/lib/tools.jar:/usr/share/tomcat5/bin/bootstrap.jar:/usr/share/tomcat5/bin/commons-logging-api.jar:/usr/share/java/mx4j/mx4j-impl.jar:/usr/share/java/mx4j/mx4j-jmx.jar -Dcatalina.base=/usr/share/tomcat5 -Dcatalina.home=/usr/share/tomcat5 -Djava.io.tmpdir=/usr/share/tomcat5/temp org.apache.catalina.startup.Bootstrap start [EMAIL PROTECTED] /]# ps -ef | grep java root 14011 12038 0 02:40 pts/000:00:00 grep java [EMAIL PROTECTED] /]# free -m total used free sharedbuffers cached Mem: 256 20235 0 0 0 -/+ buffers/cache: 20235 As you can see, the first time I ran ps -ef | grep java I could see that it's starting up, but the second time, it's not running I have another terminal open with top running, and the memory usage didn't even blink when I ran it What jvm are you running? Chances are that you will have to install the Sun version to run the app(s) so you might want to do that before much other troubleshooting. -- Les Mikesell [EMAIL PROTECTED] ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] can't get Tomcat5 to work on centos 5.1, how do I get it to work?
- Message from [EMAIL PROTECTED] - Date: Fri, 09 May 2008 07:54:42 -0500 From: Les Mikesell [EMAIL PROTECTED] Reply-To: CentOS mailing list centos@centos.org Subject: Re: [CentOS] can't get Tomcat5 to work on centos 5.1, how do I get it to work? To: CentOS mailing list centos@centos.org Rudi Ahlers wrote: Filipe Brandenburger wrote: Hi, On Thu, May 8, 2008 at 6:00 PM, Rudi Ahlers [EMAIL PROTECTED] wrote: Exception in thread main java.lang.OutOfMemoryError: Cannot create It looks like it's running out of memory when starting more threads. Did you check if you have enough memory in this server to run Tomcat? I think you need at least 512MB for it, but I would recommend more. I know there are some tunings made to the JVM for it to request more memory. If you do ps -ef | grep java when Tomcat is started you will see some parameters starting with -X that will specify memory sizes, check how much it requests. I don't really know how to tweak those, check the script that starts Tomcat to see if it allows changing them. What you're saying could be true, but I don't think it's the case. I have confirmed with the client, and he says that 128MB RAM would be enough for his app. The default config is probably asking for more than that. [EMAIL PROTECTED] /]# /etc/init.d/tomcat5 restart Starting tomcat5: [ OK ] [EMAIL PROTECTED] /]# ps -ef | grep java tomcat 13918 1 62 02:40 ?00:00:02 /usr/lib/jvm/java/bin/java -Dcatalina.ext.dirs=/usr/share/tomcat5/shared/lib:/usr/share/tomcat5/common/lib -Dcatalina.ext.dirs=/usr/share/tomcat5/shared/lib:/usr/share/tomcat5/common/lib -Djava.endorsed.dirs=/usr/share/tomcat5/common/endorsed -classpath /usr/lib/jvm/java/lib/tools.jar:/usr/share/tomcat5/bin/bootstrap.jar:/usr/share/tomcat5/bin/commons-logging-api.jar:/usr/share/java/mx4j/mx4j-impl.jar:/usr/share/java/mx4j/mx4j-jmx.jar -Dcatalina.base=/usr/share/tomcat5 -Dcatalina.home=/usr/share/tomcat5 -Djava.io.tmpdir=/usr/share/tomcat5/temp org.apache.catalina.startup.Bootstrap start [EMAIL PROTECTED] /]# ps -ef | grep java root 14011 12038 0 02:40 pts/000:00:00 grep java [EMAIL PROTECTED] /]# free -m total used free sharedbuffers cached Mem: 256 20235 0 0 0 -/+ buffers/cache: 20235 As you can see, the first time I ran ps -ef | grep java I could see that it's starting up, but the second time, it's not running I have another terminal open with top running, and the memory usage didn't even blink when I ran it What jvm are you running? Chances are that you will have to install the Sun version to run the app(s) so you might want to do that before much other troubleshooting. -- Les Mikesell [EMAIL PROTECTED] ___ Yea, I have upped the RAM to 1024MB, and it's working now. Is this what you're looking for? [EMAIL PROTECTED] ~]# java -version java version 1.4.2 gij (GNU libgcj) version 4.1.2 20070626 (Red Hat 4.1.2-14) How / where does one optimize java's usage? output from top: top - 09:05:42 up 1:59, 1 user, load average: 0.02, 0.02, 0.00 Tasks: 30 total, 1 running, 29 sleeping, 0 stopped, 0 zombie Cpu(s): 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 1048576k total, 799828k used, 248748k free,0k buffers Swap:0k total,0k used,0k free,0k cached PID USER PR NI VIRT RES SHR S %CPU %MEMTIME+ COMMAND 15908 tomcat15 0 595m 134m 35m S0 13.1 0:28.89 java 5506 mysql 18 0 133m 18m 3992 S0 1.8 0:00.08 mysqld 14282 root 18 0 7440 5420 1600 S0 0.5 0:00.01 miniserv.pl 10132 root 18 0 9144 2884 2200 S0 0.3 0:00.09 sshd 19532 root 18 0 10428 2832 1388 S0 0.3 0:00.00 httpd 3674 named 25 0 68504 2752 1756 S0 0.3 0:00.00 named 19533 apache25 0 10428 2096 628 S0 0.2 0:00.00 httpd 19535 apache25 0 10428 2096 628 S0 0.2 0:00.00 httpd 19536 apache25 0 10428 2096 628 S0 0.2 0:00.00 httpd 19537 apache25 0 10428 2096 628 S0 0.2 0:00.00 httpd 19538 apache25 0 10428 2096 628 S0 0.2 0:00.00 httpd 19539 apache25 0 10428 2096 628 S0 0.2 0:00.00 httpd 19540 apache25 0 10428 2096 628 S0 0.2 0:00.00 httpd 19541 apache25 0 10428 2096 628 S0 0.2 0:00.00 httpd 11791 postfix 18 0 6820 1868 1496 S0 0.2 0:00.00 qmgr 11789 root 18 0 6700 1768 1408 S0 0.2 0:00.01 master 12080 postfix 18 0 6768 1760 1416 S0 0.2 0:00.00 pickup 25774 root 15 0 2420 1312 1092 S0 0.1 0:00.02 bash 11784 root 18 0 2420 1308 1088 S0 0.1 0:00.03 bash 1985 root 17 0 2424 1304 1084 S0 0.1 0:00.17 bash 5470 root 22
Re: [CentOS] can't get Tomcat5 to work on centos 5.1, how do I get it to work?
Hi, On Fri, May 9, 2008 at 9:06 AM, Rudi Ahlers [EMAIL PROTECTED] wrote: Mem: 1048576k total, 799828k used, 248748k free,0k buffers Swap:0k total,0k used,0k free,0k cached You have no swap on the machine! Try adding it. You can do that by creating a big file with dd and using swapon to start using it. Try starting Tomcat after that, I'm sure it will work. HTH, Filipe ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] can't get Tomcat5 to work on centos 5.1, how do I get it to work?
Rudi Ahlers wrote: What jvm are you running? Chances are that you will have to install the Sun version to run the app(s) so you might want to do that before much other troubleshooting. Yea, I have upped the RAM to 1024MB, and it's working now. Is this what you're looking for? [EMAIL PROTECTED] ~]# java -version java version 1.4.2 gij (GNU libgcj) version 4.1.2 20070626 (Red Hat 4.1.2-14) Note that gcj is not a full java implementation. If it works, it might be faster, though. How / where does one optimize java's usage? The [vm:] section of /etc/tomcat5/workers2.properties looks likely. -- Les [EMAIL PROTECTED] ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] can't get Tomcat5 to work on centos 5.1, how do I get it to work?
Hi all A client of ours wants Tomcat 5 to be installed on a CentOS 5 server, I naturally just ran yum -y install tomcat5 tomcat5-webapps tomcat5-admin-webapps which installed it without any errors. Then I typed in service tomcat5 start, and tries to access it as such lynx http://localhost:8080/; but keep on getting an error connection refused [EMAIL PROTECTED] /]# service tomcat5 start Starting tomcat5: lock file found but no process running for pid 19684, continuing [ OK ] I don't see any tomcat errors in /var/log/messages but get this: [EMAIL PROTECTED] /]# tail -f /var/log/tomcat5/catalina.out at org.apache.catalina.core.StandardService.start(catalina-5.5.23.jar.sonuy1u1.so) at org.apache.catalina.core.StandardServer.start(catalina-5.5.23.jar.sonuy1u1.so) at org.apache.catalina.startup.Catalina.start(catalina-5.5.23.jar.sonuy1u1.so) at java.lang.reflect.Method.invoke(libgcj.so.7rh) ...2 more Exception in thread main java.lang.OutOfMemoryError: Cannot create additional threads at java.lang.Thread.start(libgcj.so.7rh) at java.lang.Runtime.runShutdownHooks(libgcj.so.7rh) at java.lang.Runtime.exitNoChecks(libgcj.so.7rh) at java.lang.Runtime.exitNoChecksAccessor(libgcj.so.7rh) I don't know Tomcat at all. Can someone please help me with this? -- Kind Regards Rudi Ahlers CEO, SoftDux Web: http://www.SoftDux.com Check out my technical blog, http://blog.softdux.com for Linux or other technical stuff, or visit http://www.WebHostingTalk.co.za for Web Hosting stuff ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] can't get Tomcat5 to work on centos 5.1, how do I get it to work?
Hi, On Thu, May 8, 2008 at 6:00 PM, Rudi Ahlers [EMAIL PROTECTED] wrote: Exception in thread main java.lang.OutOfMemoryError: Cannot create It looks like it's running out of memory when starting more threads. Did you check if you have enough memory in this server to run Tomcat? I think you need at least 512MB for it, but I would recommend more. I know there are some tunings made to the JVM for it to request more memory. If you do ps -ef | grep java when Tomcat is started you will see some parameters starting with -X that will specify memory sizes, check how much it requests. I don't really know how to tweak those, check the script that starts Tomcat to see if it allows changing them. HTH, Filipe ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
