JVM job for Tomcat taking lots and lots of CPU
"James H. H. Lampert" <jamesl-6/ELSmrcqeUu8xhjR5IN5AC/[email protected]>
| Newsgroups | gmane.comp.lang.as400.java |
|---|---|
| Message-ID | <[email protected]> |
Ladies and Gentlemen: We have a customer installation in which the JVM job for our Tomcat server is frequently using massive amounts of CPU. It's Tomcat 7.0.67, running on an AS/400, in a 64-bit Java 7 JVM, with -Xms3096m and -Xmx5120m JVM arguments. GC information on the JVM job shows: > Garbage collected heap: > Initial heap size . . . . . . . . . : 3096.000M > Maximum heap size . . . . . . . . . : 5120.000M > Current heap size . . . . . . . . . : 4458.562M > Heap in use . . . . . . . . . . . . : 1907.673M > Other memory: > Internal (break) memory size . . . . : 504.982M > JIT memory size . . . . . . . . . . : 74.000M > Shared classes memory size . . . . . : 0.000M > General GC information: > Current GC cycle . . . . . . . . . . : 2184 > GC policy type . . . . . . . . . . . : GENCON > Current GC cycle time . . . . . . . : 552 > Accumulated GC time . . . . . . . . : 5108241 It seems to be doing a lot of garbage-collecting. Would switching to Java 8 help? Would switching to 7.0.93 help? -- James H. H. Lampert -- This is the Java Programming on and around the IBM i (JAVA400-L) mailing list To post a message email: [email protected] To subscribe, unsubscribe, or change list options, visit: https://lists.midrange.com/mailman/listinfo/java400-l or email: JAVA400-L-request-+hD5IHI5Xscn3HwCXmMcX9BPR1lH4CV8@public.gmane.org Before posting, please take a moment to review the archives at https://archive.midrange.com/java400-l. Help support midrange.com by shopping at amazon.com with our affiliate link: https://amazon.midrange.com