Tomcat Memory usage(Urgent!)
Hello all Here is part of top output. Is it usual that java processes eat all of memory? ? At now there are 50 java processes started that running tomcat and each of them uses 59M memory. There is running apache server with tomcat 4 and mysql. OS is Redhat7.2 x86 . JDK 1.4 is installed. Thx 106 processes: 105 sleeping, 1 running, 0 zombie, 0 stopped CPU states: 0.3% user, 3.4% system, 0.0% nice, 96.1% idle Mem: 1028860K av, 1022352K used, 6508K free, 116K shrd, 129004K buff Swap: 1020116K av, 0K used, 1020116K free 762320K cached 3201 root 9 0 60692 59M 28164 S 0.0 5.8 0:03 java 3202 root 8 0 60692 59M 28164 S 0.0 5.8 0:00 java 3203 root 9 0 60692 59M 28164 S 0.0 5.8 0:35 java 3204 root 9 0 60692 59M 28164 S 0.0 5.8 0:00 java 3205 root 9 0 60692 59M 28164 S 0.0 5.8 0:01 java 3206 root 9 0 60692 59M 28164 S 0.0 5.8 0:00 java 3207 root 9 0 60692 59M 28164 S 0.0 5.8 0:00 java 3208 root 9 0 60692 59M 28164 S 0.0 5.8 0:00 java 3209 root 9 0 60692 59M 28164 S 0.0 5.8 0:03 java . . .
RE: Tomcat Memory usage(Urgent!)
Each of these processes correlates to a /thread/. The processes are sharing memory for the most part - something that ps or top don't make clear. Chris -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Galbayar Sent: 08 March 2002 09:24 To: Tomcat Users List Subject: Tomcat Memory usage(Urgent!) Hello all Here is part of top output. Is it usual that java processes eat all of memory? ? At now there are 50 java processes started that running tomcat and each of them uses 59M memory. There is running apache server with tomcat 4 and mysql. OS is Redhat7.2 x86 . JDK 1.4 is installed. Thx 106 processes: 105 sleeping, 1 running, 0 zombie, 0 stopped CPU states: 0.3% user, 3.4% system, 0.0% nice, 96.1% idle Mem: 1028860K av, 1022352K used, 6508K free, 116K shrd, 129004K buff Swap: 1020116K av, 0K used, 1020116K free 762320K cached 3201 root 9 0 60692 59M 28164 S 0.0 5.8 0:03 java 3202 root 8 0 60692 59M 28164 S 0.0 5.8 0:00 java 3203 root 9 0 60692 59M 28164 S 0.0 5.8 0:35 java 3204 root 9 0 60692 59M 28164 S 0.0 5.8 0:00 java 3205 root 9 0 60692 59M 28164 S 0.0 5.8 0:01 java 3206 root 9 0 60692 59M 28164 S 0.0 5.8 0:00 java 3207 root 9 0 60692 59M 28164 S 0.0 5.8 0:00 java 3208 root 9 0 60692 59M 28164 S 0.0 5.8 0:00 java 3209 root 9 0 60692 59M 28164 S 0.0 5.8 0:03 java . . . -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED]
Re: Tomcat Memory usage(Urgent!)
hi all , Well how is possible to give back memory ? Because after 2 days the memory is full. thx Chris Pheby wrote: Each of these processes correlates to a /thread/. The processes are sharing memory for the most part - something that ps or top don't make clear. Chris -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Galbayar Sent: 08 March 2002 09:24 To: Tomcat Users List Subject: Tomcat Memory usage(Urgent!) Hello all Here is part of top output. Is it usual that java processes eat all of memory? ? At now there are 50 java processes started that running tomcat and each of them uses 59M memory. There is running apache server with tomcat 4 and mysql. OS is Redhat7.2 x86 . JDK 1.4 is installed. Thx 106 processes: 105 sleeping, 1 running, 0 zombie, 0 stopped CPU states: 0.3% user, 3.4% system, 0.0% nice, 96.1% idle Mem: 1028860K av, 1022352K used, 6508K free, 116K shrd, 129004K buff Swap: 1020116K av, 0K used, 1020116K free 762320K cached 3201 root 9 0 60692 59M 28164 S 0.0 5.8 0:03 java 3202 root 8 0 60692 59M 28164 S 0.0 5.8 0:00 java 3203 root 9 0 60692 59M 28164 S 0.0 5.8 0:35 java 3204 root 9 0 60692 59M 28164 S 0.0 5.8 0:00 java 3205 root 9 0 60692 59M 28164 S 0.0 5.8 0:01 java 3206 root 9 0 60692 59M 28164 S 0.0 5.8 0:00 java 3207 root 9 0 60692 59M 28164 S 0.0 5.8 0:00 java 3208 root 9 0 60692 59M 28164 S 0.0 5.8 0:00 java 3209 root 9 0 60692 59M 28164 S 0.0 5.8 0:03 java . . . -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED] -- */Sylvain Boily/* /Administrateur Linux/ cid:[EMAIL PROTECTED] /*Adresse :* 39, bd Anatole France - 93200 St-Denis - France/ /*tel :*0148131814/ /*mail :*[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] *web:*http://www.linkbynet.fr/
Re: Tomcat Memory usage(Urgent!)
within your program you might want to check out Runtime runtime = Runtime.getRuntime; runtime.freeMemory() vs runtime.totalMemory() This will let you know what it's really using.. But as top says it's only 59M then I'd be looking at other processes in your ps list Hope this helps D Boily Sylvain wrote: hi all , Well how is possible to give back memory ? Because after 2 days the memory is full. thx Chris Pheby wrote: Each of these processes correlates to a /thread/. The processes are sharing memory for the most part - something that ps or top don't make clear. Chris -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] ] On Behalf Of Galbayar Sent: 08 March 2002 09:24 To: Tomcat Users List Subject: Tomcat Memory usage(Urgent!) Hello all Here is part of top output. Is it usual that java processes eat all of memory? ? At now there are 50 java processes started that running tomcat and each of them uses 59M memory. There is running apache server with tomcat 4 and mysql. OS is Redhat7.2 x86 . JDK 1.4 is installed. Thx 106 processes: 105 sleeping, 1 running, 0 zombie, 0 stopped CPU states: 0.3% user, 3.4% system, 0.0% nice, 96.1% idle Mem: 1028860K av, 1022352K used, 6508K free, 116K shrd, 129004K buff Swap: 1020116K av, 0K used, 1020116K free 762320K cached 3201 root 9 0 60692 59M 28164 S 0.0 5.8 0:03 java 3202 root 8 0 60692 59M 28164 S 0.0 5.8 0:00 java 3203 root 9 0 60692 59M 28164 S 0.0 5.8 0:35 java 3204 root 9 0 60692 59M 28164 S 0.0 5.8 0:00 java 3205 root 9 0 60692 59M 28164 S 0.0 5.8 0:01 java 3206 root 9 0 60692 59M 28164 S 0.0 5.8 0:00 java 3207 root 9 0 60692 59M 28164 S 0.0 5.8 0:00 java 3208 root 9 0 60692 59M 28164 S 0.0 5.8 0:00 java 3209 root 9 0 60692 59M 28164 S 0.0 5.8 0:03 java . . . -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED] -- */Sylvain Boily/* /Administrateur Linux/ cid:[EMAIL PROTECTED] /*Adresse :* 39, bd Anatole France - 93200 St-Denis - France/ /*tel :*0148131814/ /*mail :*[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] *web:*http://www.linkbynet.fr/ -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED]
RE: Tomcat Memory usage(Urgent!)
Are you sure that there's not old processes. I saw on AIX with TC4.0.1 that when i shutdowned TC, the java process wasn't killed. So I needed to kill it manually. Isn't there the same problem. Do all these processes disappeare when you stop TC ?? Arno -Message d'origine- De: David Cassidy [SMTP:[EMAIL PROTECTED]] Date: vendredi 8 mars 2002 12:05 A:Tomcat Users List Objet:Re: Tomcat Memory usage(Urgent!) within your program you might want to check out Runtime runtime = Runtime.getRuntime; runtime.freeMemory() vs runtime.totalMemory() This will let you know what it's really using.. But as top says it's only 59M then I'd be looking at other processes in your ps list Hope this helps D Boily Sylvain wrote: hi all , Well how is possible to give back memory ? Because after 2 days the memory is full. thx Chris Pheby wrote: Each of these processes correlates to a /thread/. The processes are sharing memory for the most part - something that ps or top don't make clear. Chris -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] ] On Behalf Of Galbayar Sent: 08 March 2002 09:24 To: Tomcat Users List Subject: Tomcat Memory usage(Urgent!) Hello all Here is part of top output. Is it usual that java processes eat all of memory? ? At now there are 50 java processes started that running tomcat and each of them uses 59M memory. There is running apache server with tomcat 4 and mysql. OS is Redhat7.2 x86 . JDK 1.4 is installed. Thx 106 processes: 105 sleeping, 1 running, 0 zombie, 0 stopped CPU states: 0.3% user, 3.4% system, 0.0% nice, 96.1% idle Mem: 1028860K av, 1022352K used, 6508K free, 116K shrd, 129004K buff Swap: 1020116K av, 0K used, 1020116K free 762320K cached 3201 root 9 0 60692 59M 28164 S 0.0 5.8 0:03 java 3202 root 8 0 60692 59M 28164 S 0.0 5.8 0:00 java 3203 root 9 0 60692 59M 28164 S 0.0 5.8 0:35 java 3204 root 9 0 60692 59M 28164 S 0.0 5.8 0:00 java 3205 root 9 0 60692 59M 28164 S 0.0 5.8 0:01 java 3206 root 9 0 60692 59M 28164 S 0.0 5.8 0:00 java 3207 root 9 0 60692 59M 28164 S 0.0 5.8 0:00 java 3208 root 9 0 60692 59M 28164 S 0.0 5.8 0:00 java 3209 root 9 0 60692 59M 28164 S 0.0 5.8 0:03 java . . . -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED] -- */Sylvain Boily/* /Administrateur Linux/ cid:[EMAIL PROTECTED] /*Adresse :* 39, bd Anatole France - 93200 St-Denis - France/ /*tel :*0148131814/ /*mail :*[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] *web:*http://www.linkbynet.fr/ -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED] -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED]
RE: Tomcat Memory usage(Urgent!)
We faced this problem some time back. The memory usage seemed to increase to the point where no other application could be started. Many times we had to restart the NT machine itself. We did a thorough code-review and fixed the leaks. But even after that the Tomcat memory usage kept on increasing, although it came down, all of a sudden, to a very low value (600K). So garbage collection is being done more frequently, I would say. When there are more users connected to the Web server and accessing the Servlets/JSPs, the memory usage keeps on increasing... just to give numbers... we accessed our Web application using 50+ instances of browsers (IE, Netscape) and the memory shot to 200M. After some time (not immediately) when we stopped accessing the Web server it came down to 24M. You can find more pointers on JDC at http://java.sun.com. I remember discussing this topic there. Thanks -mb- -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of David Cassidy Sent: Friday, March 08, 2002 4:35 PM To: Tomcat Users List Subject: Re: Tomcat Memory usage(Urgent!) within your program you might want to check out Runtime runtime = Runtime.getRuntime; runtime.freeMemory() vs runtime.totalMemory() This will let you know what it's really using.. But as top says it's only 59M then I'd be looking at other processes in your ps list Hope this helps D Boily Sylvain wrote: hi all , Well how is possible to give back memory ? Because after 2 days the memory is full. thx Chris Pheby wrote: Each of these processes correlates to a /thread/. The processes are sharing memory for the most part - something that ps or top don't make clear. Chris -Original Message- From: [EMAIL PROTECTED] org [mailto:tomcat-user-return-13170-chris=tfe-group.com@jakart a.apache.org ] On Behalf Of Galbayar Sent: 08 March 2002 09:24 To: Tomcat Users List Subject: Tomcat Memory usage(Urgent!) Hello all Here is part of top output. Is it usual that java processes eat all of memory? ? At now there are 50 java processes started that running tomcat and each of them uses 59M memory. There is running apache server with tomcat 4 and mysql. OS is Redhat7.2 x86 . JDK 1.4 is installed. Thx 106 processes: 105 sleeping, 1 running, 0 zombie, 0 stopped CPU states: 0.3% user, 3.4% system, 0.0% nice, 96.1% idle Mem: 1028860K av, 1022352K used, 6508K free, 116K shrd, 129004K buff Swap: 1020116K av, 0K used, 1020116K free 762320K cached 3201 root 9 0 60692 59M 28164 S 0.0 5.8 0:03 java 3202 root 8 0 60692 59M 28164 S 0.0 5.8 0:00 java 3203 root 9 0 60692 59M 28164 S 0.0 5.8 0:35 java 3204 root 9 0 60692 59M 28164 S 0.0 5.8 0:00 java 3205 root 9 0 60692 59M 28164 S 0.0 5.8 0:01 java 3206 root 9 0 60692 59M 28164 S 0.0 5.8 0:00 java 3207 root 9 0 60692 59M 28164 S 0.0 5.8 0:00 java 3208 root 9 0 60692 59M 28164 S 0.0 5.8 0:00 java 3209 root 9 0 60692 59M 28164 S 0.0 5.8 0:03 java . . . -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED] -- */Sylvain Boily/* /Administrateur Linux/ cid:[EMAIL PROTECTED] /*Adresse :* 39, bd Anatole France - 93200 St-Denis - France/ /*tel :*0148131814/ /*mail :*[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] *web:*http://www.linkbynet.fr/ -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED] -- To unsubscribe: mailto:[EMAIL PROTECTED] For additional commands: mailto:[EMAIL PROTECTED] Troubles with the list: mailto:[EMAIL PROTECTED]
