On 09/12/2015 21:36, Akbar Thanakalacheruvu wrote: > Hi > > We are using Tomcat 7.0.62 (with JVM version 1.7.0_79-b15) in our production > servers. This web server has 16 GB RAM and out of which we allocated 12 GB > RAM (xms and xmx) to tomcat (through Tomcat7w.exe). > When I monitor tomcat manager application, I see that "CMS old Gen" is > increasing minute to minute and it is reaching to 99% (11 GB) in less than 12 > hrs. > > I am not sure why this memory is not clearing out. Are there any settings > that you can suggest which can help this "CMS old Gen" to be under control? > I see lot many "OutOfMemory" errors in Tomcat logs which were caused by our > Java application(which is a 3rd party application). I tried to take heapdump > using the below command, but it failed saying "insufficient memory" error. > > Command: jmap -dump:format=b,file=snapshot.jmap process-pid > > Not sure how to proceed further to get out of these "OutOfMemory" errors. > Please help.
It depends if a) you really have a memory leak or b) the app just needs more memory than you have given it. If a) yell at the vendor of application to get their act together and fix the memory leaks. If b) install some more RAM in the box Mark --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
