Re: Help tomcat problem with memory
Hi, tahnks for you help, We actually running Java Applications with JDBC connectios to the databases, we have in this moment 13 application more or less, and one of the this application is on our website, we've received connections from any sites of the internet, and we are interesting to get tunnig in ours Tomcats. Christopher Schultz wrote: Fabian, If i have only two java proccess of 141 MB and 55 MB why my memory is over 90% of the utilization and the application working slowly or not working, when the users try to get access using the webserver in this server. i can't understand this problem...thnaks You have to understand something about Linux memory: it never gives it up. So, even though 'top' reports that your box has very little free physical memory, that doesn't mean that it's all being used. When the kernel obtains memory on behalf of a process, it doesn't go back into 'free' when the process fees it or dies. I know it's a little weird. However, you do have a reasonable complaint: the app seems sluggish, and with that hardware, it shouldn't be. Again: what are you running? If your code fires off 500 threads every time a request comes in, then maybe you shoudl rethink your architecture. If it's nothing heavy-hitting, then something else is wrong. What else is running on the box? What benchmarks have you run? Or, are you just complaining about wall-clock time? Could your problem be network latency? How far from the box are you? -chris - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Help tomcat problem with memory
If that's a typical snapshop of the system load you havn't any of this problems: - Memory usage As others have pointed out, you have plenty of memory (Compared to the need of 2 instances of tomcat with 80 to 130MB each) - CPU Usage Both CPU's are idle at over 80 percent. (They are mainly doing nothing) The load also indicates that the system is mainly doing nothing. What may have: - An application that sits on thread or database locks and is waiting for them to be released (maybe even a deadlock) - Some external problem: - dns lookups don't work each request is delayed until a dns lookup timeout occurs. (Disable dnslookups) - obscure routing to a database server each request to the database is routed on strange paths to be answered. (Have seen configurations where the request where routed over the internet to reach a lokal database) - Maybe IO Problems The iostate is not shown in the top output. (This problem is very unlikely, as this would also influence the load numbers) You have to find out what is causing the performance degration. You might find following tools usefull to do that: OS related tools: - vmstat - iostat - netstat - strace java related tools: - OptimizeIt - JProbe - HPJmeter http://www.hp.com/products1/unix/java/hpjmeter/ - enablic verbose gc in the vm - Try to trim down the smallest example webapp that exposes the problem. Try to find out where the time is used. (Measure the time between a request in the apache accesslog and the corresponding call of the servlet) if the time is spnt in the servlet/jsp include additional log statements to find out where in the servlet the problem is caused) If that doesn't help post the example to the list. - Debugger It's not in the scope of this list to go in more detail for this tools. But maybe some links may help you to get a start: http://www-106.ibm.com/developerworks/library/i-tuning/?dwzone=ibm http://www.linuxdevcenter.com/lpt/a/272 BTW: JAVA_OPST is misspelled (should be JAVA_OPTS) 40m is a quite low value for the memory setting. -Original Message- From: software [mailto:[EMAIL PROTECTED] Sent: Friday, February 27, 2004 7:02 PM To: Tomcat Users List Subject: Re: Help tomcat problem with memory Importance: High Hi this the statemens that i posted in the catalina.sh file JAVA_HOME=/usr/java/j2sdk1.4.0 ; export JAVA_HOME CATALINA_HOME=/usr/local/tomcat1 ; export CATALINA_HOME JAVA_OPST=-server -Xms30m -Xmx40m -Dfile.encoding=ISO-8859-1 CATALINA_OPTS=-Xms30m -Xmx40m This the output of the top command and both tomcats has been installed in the same server 1:22pm up 21 days, 5:36, 6 users, load average: 0.17, 0.23, 0.28 220 processes: 218 sleeping, 2 running, 0 zombie, 0 stopped CPU0 states: 9.5% user, 4.0% system, 0.0% nice, 85.5% idle CPU1 states: 7.4% user, 8.5% system, 0.4% nice, 83.3% idle Mem: 1030580K av, 1019220K used, 11360K free, 0K shrd, 92348K buff Swap: 2096376K av, 58748K used, 2037628K free 706776K cached PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME COMMAND 23447 root 25 0 86252 84M 18864 S 0.0 8.3 0:02 java 23461 root 15 0 86252 84M 18864 S 0.0 8.3 0:00 java 23462 root 15 0 86252 84M 18864 S 0.0 8.3 0:03 java 23463 root 15 0 86252 84M 18864 S 0.0 8.3 0:00 java 23464 root 15 0 86252 84M 18864 S 0.0 8.3 0:00 java 23474 root 15 0 86252 84M 18864 S 0.5 8.3 0:03 java 23475 root 20 0 86252 84M 18864 S 0.0 8.3 0:00 java 23476 root 20 0 86252 84M 18864 S 0.0 8.3 0:00 java Ralph Einfeldt wrote: To what value did you set -Xms, -Xmm ? Can you post the statement that sets the values ? (Have seen to much typos in the past) How much memory has your box ? What says the cpu load ? Can you post the head of the top output hat shows the overall memory usage ? Are both tomcat instances on the same server ? Unless you have less than ~150 MB RAM I wouldn't expect that the memory usage is the problem if each tomcat has it's own server, if they share the same server the box would need rougly 300 MB (Depending on how much memory is used by other processes) Remember that all threads of the same vm share their memory. -Original Message- From: software [mailto:[EMAIL PROTECTED] Sent: Friday, February 27, 2004 6:07 PM To: Tomcat Users List Subject: Re: Help tomcat problem with memory Importance: High Yes i've configured the Tomcat environment -Xms, -Xmm but i think it doesn't work, because it's consume the server memory until 145 Mb per process i need to limit the number of java proccess and the memory that they consume on my Linux Red Hat 7.3 server thanks a lot fabian Ralph Einfeldt wrote
Help tomcat problem with memory
Hi i have installed apache 13.24 with 2 tomcats 4.0.3 with loadbalancer is woring fine but the problem when i'm using the ps -ef | grep java command i've saw many java process justa like these: 21430 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21431 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21443 root 15 0 139M 139M 49444 S 0.0 13.8 0:07 java 21444 root 20 0 139M 139M 49444 S 0.0 13.8 0:00 java 21445 root 20 0 139M 139M 49444 S 0.0 13.8 0:00 java 21446 root 15 0 139M 139M 49444 S 0.0 13.8 0:06 java 21454 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21457 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21458 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21460 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21462 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21464 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21466 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21468 root 16 0 139M 139M 49444 S 0.0 13.8 0:04 java 21469 root 15 0 139M 139M 49444 S 0.0 13.8 0:03 java looking the internet, the solution is use the -Xmx , -Xms and use the className=org.apache.tomcat.service.PoolTcpConnector and i'm working with Ajp13 !-- A pooled AJPV12 Connector for out-of-process operation -- Connector className=org.apache.tomcat.service.PoolTcpConnector Parameter name=handler value=org.apache.tomcat.service.connector.Ajp12ConnectionHandler/ Parameter name=port value=8007/ Parameter name=max_threads value=30/ Parameter name=max_spare_threads value=20/ Parameter name=min_spare_threads value=5 / /Connector Thanks Fabian - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Help tomcat problem with memory
So what's your problem? Are you using Linux? Did you know that Linux shows threads as processes using ps? Are you running out of memory? A little more information would be helpful. Regards, Drew -Original Message- From: software [mailto:[EMAIL PROTECTED] Sent: Friday, February 27, 2004 11:36 AM To: [EMAIL PROTECTED] Subject: Help tomcat problem with memory Importance: High Hi i have installed apache 13.24 with 2 tomcats 4.0.3 with loadbalancer is woring fine but the problem when i'm using the ps -ef | grep java command i've saw many java process justa like these: 21430 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21431 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21443 root 15 0 139M 139M 49444 S 0.0 13.8 0:07 java 21444 root 20 0 139M 139M 49444 S 0.0 13.8 0:00 java 21445 root 20 0 139M 139M 49444 S 0.0 13.8 0:00 java 21446 root 15 0 139M 139M 49444 S 0.0 13.8 0:06 java 21454 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21457 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21458 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21460 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21462 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21464 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21466 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21468 root 16 0 139M 139M 49444 S 0.0 13.8 0:04 java 21469 root 15 0 139M 139M 49444 S 0.0 13.8 0:03 java looking the internet, the solution is use the -Xmx , -Xms and use the className=org.apache.tomcat.service.PoolTcpConnector and i'm working with Ajp13 !-- A pooled AJPV12 Connector for out-of-process operation -- Connector className=org.apache.tomcat.service.PoolTcpConnector Parameter name=handler value=org.apache.tomcat.service.connector.Ajp12ConnectionHandler/ Parameter name=port value=8007/ Parameter name=max_threads value=30/ Parameter name=max_spare_threads value=20/ Parameter name=min_spare_threads value=5 / /Connector Thanks Fabian - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Help tomcat problem with memory
I not shure which problem you have : - Why do I have so many processes (You havn't, that are threads, search google or the archives on that one) - Why does the process take this amount of memory Depens on several factors. (Memory setting of the vm, amount of servlets, jsp's, number of features you use in tomcat, current number of active sessions, ) - How can I give the process more memory Set the option in the environment variable CATALINA_OPTS or JAVA_OPTS befor starting tomcat. -Original Message- From: software [mailto:[EMAIL PROTECTED] Sent: Friday, February 27, 2004 5:36 PM To: [EMAIL PROTECTED] Subject: Help tomcat problem with memory Importance: High Hi i have installed apache 13.24 with 2 tomcats 4.0.3 with loadbalancer is woring fine but the problem when i'm using the ps -ef | grep java command i've saw many java process justa like these: 21430 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21431 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21443 root 15 0 139M 139M 49444 S 0.0 13.8 0:07 java 21444 root 20 0 139M 139M 49444 S 0.0 13.8 0:00 java 21445 root 20 0 139M 139M 49444 S 0.0 13.8 0:00 java 21446 root 15 0 139M 139M 49444 S 0.0 13.8 0:06 java 21454 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21457 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21458 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21460 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21462 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21464 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21466 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21468 root 16 0 139M 139M 49444 S 0.0 13.8 0:04 java 21469 root 15 0 139M 139M 49444 S 0.0 13.8 0:03 java looking the internet, the solution is use the -Xmx , -Xms and use the className=org.apache.tomcat.service.PoolTcpConnector and i'm working with Ajp13 !-- A pooled AJPV12 Connector for out-of-process operation -- Connector className=org.apache.tomcat.service.PoolTcpConnector Parameter name=handler value=org.apache.tomcat.service.connector.Ajp12ConnectionHandler/ Parameter name=port value=8007/ Parameter name=max_threads value=30/ Parameter name=max_spare_threads value=20/ Parameter name=min_spare_threads value=5 / /Connector Thanks Fabian - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Help tomcat problem with memory
If you weren't aware of what Hamilton mentioned, try a ps awxu --forest | grep java, and you will get a listing of processes with their child threads in a tree view. -Original Message- From: Hamilton Andrew [mailto:[EMAIL PROTECTED] Sent: Friday, February 27, 2004 9:44 AM To: Tomcat Users List Subject: RE: Help tomcat problem with memory So what's your problem? Are you using Linux? Did you know that Linux shows threads as processes using ps? Are you running out of memory? A little more information would be helpful. Regards, Drew -Original Message- From: software [mailto:[EMAIL PROTECTED] Sent: Friday, February 27, 2004 11:36 AM To: [EMAIL PROTECTED] Subject: Help tomcat problem with memory Importance: High Hi i have installed apache 13.24 with 2 tomcats 4.0.3 with loadbalancer is woring fine but the problem when i'm using the ps -ef | grep java command i've saw many java process justa like these: 21430 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21431 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21443 root 15 0 139M 139M 49444 S 0.0 13.8 0:07 java 21444 root 20 0 139M 139M 49444 S 0.0 13.8 0:00 java 21445 root 20 0 139M 139M 49444 S 0.0 13.8 0:00 java 21446 root 15 0 139M 139M 49444 S 0.0 13.8 0:06 java 21454 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21457 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21458 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21460 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21462 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21464 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21466 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21468 root 16 0 139M 139M 49444 S 0.0 13.8 0:04 java 21469 root 15 0 139M 139M 49444 S 0.0 13.8 0:03 java looking the internet, the solution is use the -Xmx , -Xms and use the className=org.apache.tomcat.service.PoolTcpConnector and i'm working with Ajp13 !-- A pooled AJPV12 Connector for out-of-process operation -- Connector className=org.apache.tomcat.service.PoolTcpConnector Parameter name=handler value=org.apache.tomcat.service.connector.Ajp12ConnectionHandler/ Parameter name=port value=8007/ Parameter name=max_threads value=30/ Parameter name=max_spare_threads value=20/ Parameter name=min_spare_threads value=5 / /Connector Thanks Fabian - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] __ This communication is intended for the use of the recipient to whom it is addressed, and may contain confidential, personal, and or privileged information. Please contact us immediately if you are not the intended recipient of this communication, and do not copy, distribute, or take action relying on it. Any communications received in error, or subsequent reply, should be deleted or destroyed. --- - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Help tomcat problem with memory
So what's your problem? -Original Message- From: software [mailto:[EMAIL PROTECTED] Sent: Friday, February 27, 2004 5:36 PM To: [EMAIL PROTECTED] Subject: Help tomcat problem with memory Importance: High Hi i have installed apache 13.24 with 2 tomcats 4.0.3 with loadbalancer is woring fine but the problem when i'm using the ps -ef | grep java command i've saw many java process justa like these: 21430 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21431 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21443 root 15 0 139M 139M 49444 S 0.0 13.8 0:07 java 21444 root 20 0 139M 139M 49444 S 0.0 13.8 0:00 java 21445 root 20 0 139M 139M 49444 S 0.0 13.8 0:00 java 21446 root 15 0 139M 139M 49444 S 0.0 13.8 0:06 java 21454 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21457 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21458 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21460 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21462 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21464 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21466 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21468 root 16 0 139M 139M 49444 S 0.0 13.8 0:04 java 21469 root 15 0 139M 139M 49444 S 0.0 13.8 0:03 java looking the internet, the solution is use the -Xmx , -Xms and use the className=org.apache.tomcat.service.PoolTcpConnector and i'm working with Ajp13 !-- A pooled AJPV12 Connector for out-of-process operation -- Connector className=org.apache.tomcat.service.PoolTcpConnector Parameter name=handler value=org.apache.tomcat.service.connector.Ajp12ConnectionHandler/ Parameter name=port value=8007/ Parameter name=max_threads value=30/ Parameter name=max_spare_threads value=20/ Parameter name=min_spare_threads value=5 / /Connector Thanks Fabian - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Help tomcat problem with memory
Hi, my problem is that the performance of my server linux redhat 7.3 is down because when a try to get acceso to some application (for java) in my webserver i have to wait a lot of time, somtimes i've got acces sometime it didn't happen ... when i use ps -ef | grep java i getting many proccess with java using more or less 145 MB of my memory and i have in this moment 105 proccess using 145 MB. Thanks for you help Hamilton Andrew wrote: So what's your problem? Are you using Linux? Did you know that Linux shows threads as processes using ps? Are you running out of memory? A little more information would be helpful. Regards, Drew -Original Message- From: software [mailto:[EMAIL PROTECTED] Sent: Friday, February 27, 2004 11:36 AM To: [EMAIL PROTECTED] Subject: Help tomcat problem with memory Importance: High Hi i have installed apache 13.24 with 2 tomcats 4.0.3 with loadbalancer is woring fine but the problem when i'm using the ps -ef | grep java command i've saw many java process justa like these: 21430 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21431 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21443 root 15 0 139M 139M 49444 S 0.0 13.8 0:07 java 21444 root 20 0 139M 139M 49444 S 0.0 13.8 0:00 java 21445 root 20 0 139M 139M 49444 S 0.0 13.8 0:00 java 21446 root 15 0 139M 139M 49444 S 0.0 13.8 0:06 java 21454 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21457 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21458 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21460 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21462 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21464 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21466 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21468 root 16 0 139M 139M 49444 S 0.0 13.8 0:04 java 21469 root 15 0 139M 139M 49444 S 0.0 13.8 0:03 java looking the internet, the solution is use the -Xmx , -Xms and use the className=org.apache.tomcat.service.PoolTcpConnector and i'm working with Ajp13 !-- A pooled AJPV12 Connector for out-of-process operation -- Connector className=org.apache.tomcat.service.PoolTcpConnector Parameter name=handler value=org.apache.tomcat.service.connector.Ajp12ConnectionHandler/ Parameter name=port value=8007/ Parameter name=max_threads value=30/ Parameter name=max_spare_threads value=20/ Parameter name=min_spare_threads value=5 / /Connector Thanks Fabian - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Help tomcat problem with memory
Yes i've configured the Tomcat environment -Xms, -Xmm but i think it doesn't work, because it's consume the server memory until 145 Mb per process i need to limit the number of java proccess and the memory that they consume on my Linux Red Hat 7.3 server thanks a lot fabian Ralph Einfeldt wrote: I not shure which problem you have : - Why do I have so many processes (You havn't, that are threads, search google or the archives on that one) - Why does the process take this amount of memory Depens on several factors. (Memory setting of the vm, amount of servlets, jsp's, number of features you use in tomcat, current number of active sessions, ) - How can I give the process more memory Set the option in the environment variable CATALINA_OPTS or JAVA_OPTS befor starting tomcat. -Original Message- From: software [mailto:[EMAIL PROTECTED] Sent: Friday, February 27, 2004 5:36 PM To: [EMAIL PROTECTED] Subject: Help tomcat problem with memory Importance: High Hi i have installed apache 13.24 with 2 tomcats 4.0.3 with loadbalancer is woring fine but the problem when i'm using the ps -ef | grep java command i've saw many java process justa like these: 21430 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21431 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21443 root 15 0 139M 139M 49444 S 0.0 13.8 0:07 java 21444 root 20 0 139M 139M 49444 S 0.0 13.8 0:00 java 21445 root 20 0 139M 139M 49444 S 0.0 13.8 0:00 java 21446 root 15 0 139M 139M 49444 S 0.0 13.8 0:06 java 21454 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21457 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21458 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21460 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21462 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21464 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21466 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21468 root 16 0 139M 139M 49444 S 0.0 13.8 0:04 java 21469 root 15 0 139M 139M 49444 S 0.0 13.8 0:03 java looking the internet, the solution is use the -Xmx , -Xms and use the className=org.apache.tomcat.service.PoolTcpConnector and i'm working with Ajp13 !-- A pooled AJPV12 Connector for out-of-process operation -- Connector className=org.apache.tomcat.service.PoolTcpConnector Parameter name=handler value=org.apache.tomcat.service.connector.Ajp12ConnectionHandler/ Parameter name=port value=8007/ Parameter name=max_threads value=30/ Parameter name=max_spare_threads value=20/ Parameter name=min_spare_threads value=5 / /Connector Thanks Fabian - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Help tomcat problem with memory
that is your vm settings? -Original Message- From: software [mailto:[EMAIL PROTECTED] Sent: Friday, February 27, 2004 12:07 PM To: Tomcat Users List Subject: Re: Help tomcat problem with memory Importance: High Yes i've configured the Tomcat environment -Xms, -Xmm but i think it doesn't work, because it's consume the server memory until 145 Mb per process i need to limit the number of java proccess and the memory that they consume on my Linux Red Hat 7.3 server thanks a lot fabian Ralph Einfeldt wrote: I not shure which problem you have : - Why do I have so many processes (You havn't, that are threads, search google or the archives on that one) - Why does the process take this amount of memory Depens on several factors. (Memory setting of the vm, amount of servlets, jsp's, number of features you use in tomcat, current number of active sessions, ) - How can I give the process more memory Set the option in the environment variable CATALINA_OPTS or JAVA_OPTS befor starting tomcat. -Original Message- From: software [mailto:[EMAIL PROTECTED] Sent: Friday, February 27, 2004 5:36 PM To: [EMAIL PROTECTED] Subject: Help tomcat problem with memory Importance: High Hi i have installed apache 13.24 with 2 tomcats 4.0.3 with loadbalancer is woring fine but the problem when i'm using the ps -ef | grep java command i've saw many java process justa like these: 21430 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21431 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21443 root 15 0 139M 139M 49444 S 0.0 13.8 0:07 java 21444 root 20 0 139M 139M 49444 S 0.0 13.8 0:00 java 21445 root 20 0 139M 139M 49444 S 0.0 13.8 0:00 java 21446 root 15 0 139M 139M 49444 S 0.0 13.8 0:06 java 21454 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21457 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21458 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21460 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21462 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21464 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21466 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21468 root 16 0 139M 139M 49444 S 0.0 13.8 0:04 java 21469 root 15 0 139M 139M 49444 S 0.0 13.8 0:03 java looking the internet, the solution is use the -Xmx , -Xms and use the className=org.apache.tomcat.service.PoolTcpConnector and i'm working with Ajp13 !-- A pooled AJPV12 Connector for out-of-process operation -- Connector className=org.apache.tomcat.service.PoolTcpConnector Parameter name=handler value=org.apache.tomcat.service.connector.Ajp12ConnectionHandler/ Parameter name=port value=8007/ Parameter name=max_threads value=30/ Parameter name=max_spare_threads value=20/ Parameter name=min_spare_threads value=5 / /Connector Thanks Fabian - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Help tomcat problem with memory
To what value did you set -Xms, -Xmm ? Can you post the statement that sets the values ? (Have seen to much typos in the past) How much memory has your box ? What says the cpu load ? Can you post the head of the top output hat shows the overall memory usage ? Are both tomcat instances on the same server ? Unless you have less than ~150 MB RAM I wouldn't expect that the memory usage is the problem if each tomcat has it's own server, if they share the same server the box would need rougly 300 MB (Depending on how much memory is used by other processes) Remember that all threads of the same vm share their memory. -Original Message- From: software [mailto:[EMAIL PROTECTED] Sent: Friday, February 27, 2004 6:07 PM To: Tomcat Users List Subject: Re: Help tomcat problem with memory Importance: High Yes i've configured the Tomcat environment -Xms, -Xmm but i think it doesn't work, because it's consume the server memory until 145 Mb per process i need to limit the number of java proccess and the memory that they consume on my Linux Red Hat 7.3 server thanks a lot fabian Ralph Einfeldt wrote: - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Help tomcat problem with memory
The 145 is the entire JVM memory usage. It just shows up on every thread as 145M. It's not actually using that much per thread. Again... ps awxu --forest | grep java will show all the threads, along with their parent. You might notice that the parent and children all show the same values. -Original Message- From: software [mailto:[EMAIL PROTECTED] Sent: Friday, February 27, 2004 10:01 AM To: Tomcat Users List; [EMAIL PROTECTED] Subject: Re: Help tomcat problem with memory Importance: High Hi, my problem is that the performance of my server linux redhat 7.3 is down because when a try to get acceso to some application (for java) in my webserver i have to wait a lot of time, somtimes i've got acces sometime it didn't happen ... when i use ps -ef | grep java i getting many proccess with java using more or less 145 MB of my memory and i have in this moment 105 proccess using 145 MB. Thanks for you help Hamilton Andrew wrote: So what's your problem? Are you using Linux? Did you know that Linux shows threads as processes using ps? Are you running out of memory? A little more information would be helpful. Regards, Drew -Original Message- From: software [mailto:[EMAIL PROTECTED] Sent: Friday, February 27, 2004 11:36 AM To: [EMAIL PROTECTED] Subject: Help tomcat problem with memory Importance: High Hi i have installed apache 13.24 with 2 tomcats 4.0.3 with loadbalancer is woring fine but the problem when i'm using the ps -ef | grep java command i've saw many java process justa like these: 21430 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21431 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21443 root 15 0 139M 139M 49444 S 0.0 13.8 0:07 java 21444 root 20 0 139M 139M 49444 S 0.0 13.8 0:00 java 21445 root 20 0 139M 139M 49444 S 0.0 13.8 0:00 java 21446 root 15 0 139M 139M 49444 S 0.0 13.8 0:06 java 21454 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21457 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21458 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21460 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21462 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21464 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21466 root 15 0 139M 139M 49444 S 0.0 13.8 0:00 java 21468 root 16 0 139M 139M 49444 S 0.0 13.8 0:04 java 21469 root 15 0 139M 139M 49444 S 0.0 13.8 0:03 java looking the internet, the solution is use the -Xmx , -Xms and use the className=org.apache.tomcat.service.PoolTcpConnector and i'm working with Ajp13 !-- A pooled AJPV12 Connector for out-of-process operation -- Connector className=org.apache.tomcat.service.PoolTcpConnector Parameter name=handler value=org.apache.tomcat.service.connector.Ajp12ConnectionHandler/ Parameter name=port value=8007/ Parameter name=max_threads value=30/ Parameter name=max_spare_threads value=20/ Parameter name=min_spare_threads value=5 / /Connector Thanks Fabian - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] __ This communication is intended for the use of the recipient to whom it is addressed, and may contain confidential, personal, and or privileged information. Please contact us immediately if you are not the intended recipient of this communication, and do not copy, distribute, or take action relying on it. Any communications received in error, or subsequent reply, should be deleted or destroyed. --- - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Help tomcat problem with memory
Hi this the statemens that i posted in the catalina.sh file JAVA_HOME=/usr/java/j2sdk1.4.0 ; export JAVA_HOME CATALINA_HOME=/usr/local/tomcat1 ; export CATALINA_HOME JAVA_OPST=-server -Xms30m -Xmx40m -Dfile.encoding=ISO-8859-1 CATALINA_OPTS=-Xms30m -Xmx40m This the output of the top command and both tomcats has been installed in the same server 1:22pm up 21 days, 5:36, 6 users, load average: 0.17, 0.23, 0.28 220 processes: 218 sleeping, 2 running, 0 zombie, 0 stopped CPU0 states: 9.5% user, 4.0% system, 0.0% nice, 85.5% idle CPU1 states: 7.4% user, 8.5% system, 0.4% nice, 83.3% idle Mem: 1030580K av, 1019220K used, 11360K free, 0K shrd, 92348K buff Swap: 2096376K av, 58748K used, 2037628K free 706776K cached PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME COMMAND 23447 root 25 0 86252 84M 18864 S 0.0 8.3 0:02 java 23461 root 15 0 86252 84M 18864 S 0.0 8.3 0:00 java 23462 root 15 0 86252 84M 18864 S 0.0 8.3 0:03 java 23463 root 15 0 86252 84M 18864 S 0.0 8.3 0:00 java 23464 root 15 0 86252 84M 18864 S 0.0 8.3 0:00 java 23474 root 15 0 86252 84M 18864 S 0.5 8.3 0:03 java 23475 root 20 0 86252 84M 18864 S 0.0 8.3 0:00 java 23476 root 20 0 86252 84M 18864 S 0.0 8.3 0:00 java Ralph Einfeldt wrote: To what value did you set -Xms, -Xmm ? Can you post the statement that sets the values ? (Have seen to much typos in the past) How much memory has your box ? What says the cpu load ? Can you post the head of the top output hat shows the overall memory usage ? Are both tomcat instances on the same server ? Unless you have less than ~150 MB RAM I wouldn't expect that the memory usage is the problem if each tomcat has it's own server, if they share the same server the box would need rougly 300 MB (Depending on how much memory is used by other processes) Remember that all threads of the same vm share their memory. -Original Message- From: software [mailto:[EMAIL PROTECTED] Sent: Friday, February 27, 2004 6:07 PM To: Tomcat Users List Subject: Re: Help tomcat problem with memory Importance: High Yes i've configured the Tomcat environment -Xms, -Xmm but i think it doesn't work, because it's consume the server memory until 145 Mb per process i need to limit the number of java proccess and the memory that they consume on my Linux Red Hat 7.3 server thanks a lot fabian Ralph Einfeldt wrote: - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Help tomcat problem with memory
So, Hi this the statemens that i posted in the catalina.sh file JAVA_HOME=/usr/java/j2sdk1.4.0 ; export JAVA_HOME CATALINA_HOME=/usr/local/tomcat1 ; export CATALINA_HOME JAVA_OPST=-server -Xms30m -Xmx40m -Dfile.encoding=ISO-8859-1 CATALINA_OPTS=-Xms30m -Xmx40m Your app seems to be taking more than 30m, eh? Try 30M -- it might be case sensitive. Although the VM and Tomcat might not even be able to load and get anything done in that little memory. This the output of the top command and both tomcats has been installed in the same server 1:22pm up 21 days, 5:36, 6 users, load average: 0.17, 0.23, 0.28 Your load average looks great. What's the problem? CPU0 states: 9.5% user, 4.0% system, 0.0% nice, 85.5% idle CPU1 states: 7.4% user, 8.5% system, 0.4% nice, 83.3% idle Mem: 1030580K av, 1019220K used, 11360K free, 0K shrd, 92348K You've got a dual-CPU machine with a gig of RAM and your app is responding slowly? What are you running? buff Swap: 2096376K av, 58748K used, 2037628K free 706776K Your swap hasn't been touched. Unless you have a totally braindead app, something is terribly wrong if it's really not responding. Have you hooked up a profiler to your app? -chris signature.asc Description: OpenPGP digital signature
Re: Help tomcat problem with memory
If i have only two java proccess of 141 MB and 55 MB why my memory is over 90% of the utilization and the application working slowly or not working, when the users try to get access using the webserver in this server. i can't understand this problem...thnaks Thanks a lot for you help Fabian software wrote: Hi this the statemens that i posted in the catalina.sh file JAVA_HOME=/usr/java/j2sdk1.4.0 ; export JAVA_HOME CATALINA_HOME=/usr/local/tomcat1 ; export CATALINA_HOME JAVA_OPST=-server -Xms30m -Xmx40m -Dfile.encoding=ISO-8859-1 CATALINA_OPTS=-Xms30m -Xmx40m This the output of the top command and both tomcats has been installed in the same server 1:22pm up 21 days, 5:36, 6 users, load average: 0.17, 0.23, 0.28 220 processes: 218 sleeping, 2 running, 0 zombie, 0 stopped CPU0 states: 9.5% user, 4.0% system, 0.0% nice, 85.5% idle CPU1 states: 7.4% user, 8.5% system, 0.4% nice, 83.3% idle Mem: 1030580K av, 1019220K used, 11360K free, 0K shrd, 92348K buff Swap: 2096376K av, 58748K used, 2037628K free 706776K cached PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME COMMAND 23447 root 25 0 86252 84M 18864 S 0.0 8.3 0:02 java 23461 root 15 0 86252 84M 18864 S 0.0 8.3 0:00 java 23462 root 15 0 86252 84M 18864 S 0.0 8.3 0:03 java 23463 root 15 0 86252 84M 18864 S 0.0 8.3 0:00 java 23464 root 15 0 86252 84M 18864 S 0.0 8.3 0:00 java 23474 root 15 0 86252 84M 18864 S 0.5 8.3 0:03 java 23475 root 20 0 86252 84M 18864 S 0.0 8.3 0:00 java 23476 root 20 0 86252 84M 18864 S 0.0 8.3 0:00 java Ralph Einfeldt wrote: To what value did you set -Xms, -Xmm ? Can you post the statement that sets the values ? (Have seen to much typos in the past) How much memory has your box ? What says the cpu load ? Can you post the head of the top output hat shows the overall memory usage ? Are both tomcat instances on the same server ? Unless you have less than ~150 MB RAM I wouldn't expect that the memory usage is the problem if each tomcat has it's own server, if they share the same server the box would need rougly 300 MB (Depending on how much memory is used by other processes) Remember that all threads of the same vm share their memory. -Original Message- From: software [mailto:[EMAIL PROTECTED] Sent: Friday, February 27, 2004 6:07 PM To: Tomcat Users List Subject: Re: Help tomcat problem with memory Importance: High Yes i've configured the Tomcat environment -Xms, -Xmm but i think it doesn't work, because it's consume the server memory until 145 Mb per process i need to limit the number of java proccess and the memory that they consume on my Linux Red Hat 7.3 server thanks a lot fabian Ralph Einfeldt wrote: - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Help tomcat problem with memory
Why don't you find someone who understands memory usage for your operating system and have them explain the output of your commands to you. You have 700+MB being used as file cache. Your system is under no memory pressure. Your app is slow because 1) It's compiling JSPs, and this takes some overhead on the first hit. OR 2) You are hitting a database and not using connection pooling. This can kill performance. OR 3) Your application is badly written. -Original Message- From: software [mailto:[EMAIL PROTECTED] Sent: Friday, February 27, 2004 1:35 PM To: Tomcat Users List Subject: Re: Help tomcat problem with memory If i have only two java proccess of 141 MB and 55 MB why my memory is over 90% of the utilization and the application working slowly or not working, when the users try to get access using the webserver in this server. i can't understand this problem...thnaks Thanks a lot for you help Fabian software wrote: Hi this the statemens that i posted in the catalina.sh file JAVA_HOME=/usr/java/j2sdk1.4.0 ; export JAVA_HOME CATALINA_HOME=/usr/local/tomcat1 ; export CATALINA_HOME JAVA_OPST=-server -Xms30m -Xmx40m -Dfile.encoding=ISO-8859-1 CATALINA_OPTS=-Xms30m -Xmx40m This the output of the top command and both tomcats has been installed in the same server 1:22pm up 21 days, 5:36, 6 users, load average: 0.17, 0.23, 0.28 220 processes: 218 sleeping, 2 running, 0 zombie, 0 stopped CPU0 states: 9.5% user, 4.0% system, 0.0% nice, 85.5% idle CPU1 states: 7.4% user, 8.5% system, 0.4% nice, 83.3% idle Mem: 1030580K av, 1019220K used, 11360K free, 0K shrd, 92348K buff Swap: 2096376K av, 58748K used, 2037628K free 706776K cached PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME COMMAND 23447 root 25 0 86252 84M 18864 S 0.0 8.3 0:02 java 23461 root 15 0 86252 84M 18864 S 0.0 8.3 0:00 java 23462 root 15 0 86252 84M 18864 S 0.0 8.3 0:03 java 23463 root 15 0 86252 84M 18864 S 0.0 8.3 0:00 java 23464 root 15 0 86252 84M 18864 S 0.0 8.3 0:00 java 23474 root 15 0 86252 84M 18864 S 0.5 8.3 0:03 java 23475 root 20 0 86252 84M 18864 S 0.0 8.3 0:00 java 23476 root 20 0 86252 84M 18864 S 0.0 8.3 0:00 java Ralph Einfeldt wrote: To what value did you set -Xms, -Xmm ? Can you post the statement that sets the values ? (Have seen to much typos in the past) How much memory has your box ? What says the cpu load ? Can you post the head of the top output hat shows the overall memory usage ? Are both tomcat instances on the same server ? Unless you have less than ~150 MB RAM I wouldn't expect that the memory usage is the problem if each tomcat has it's own server, if they share the same server the box would need rougly 300 MB (Depending on how much memory is used by other processes) Remember that all threads of the same vm share their memory. -Original Message- From: software [mailto:[EMAIL PROTECTED] Sent: Friday, February 27, 2004 6:07 PM To: Tomcat Users List Subject: Re: Help tomcat problem with memory Importance: High Yes i've configured the Tomcat environment -Xms, -Xmm but i think it doesn't work, because it's consume the server memory until 145 Mb per process i need to limit the number of java proccess and the memory that they consume on my Linux Red Hat 7.3 server thanks a lot fabian Ralph Einfeldt wrote: - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Help tomcat problem with memory
Fabian, If i have only two java proccess of 141 MB and 55 MB why my memory is over 90% of the utilization and the application working slowly or not working, when the users try to get access using the webserver in this server. i can't understand this problem...thnaks You have to understand something about Linux memory: it never gives it up. So, even though 'top' reports that your box has very little free physical memory, that doesn't mean that it's all being used. When the kernel obtains memory on behalf of a process, it doesn't go back into 'free' when the process fees it or dies. I know it's a little weird. However, you do have a reasonable complaint: the app seems sluggish, and with that hardware, it shouldn't be. Again: what are you running? If your code fires off 500 threads every time a request comes in, then maybe you shoudl rethink your architecture. If it's nothing heavy-hitting, then something else is wrong. What else is running on the box? What benchmarks have you run? Or, are you just complaining about wall-clock time? Could your problem be network latency? How far from the box are you? -chris signature.asc Description: OpenPGP digital signature
