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From: David H. <dh...@23...> - 2012-06-05 06:35:18
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Stefan Willinger <stefan.home <at> aon.at> writes: > > Hi Dave, > I can't answer the question, if 49 java threads are normal. This > depends on the state of SQuirreL. E.g. how many Sessions are open > and so on. > If I start SQuirrel and open a connection, then I have 26 threads > running. ... > With a thread dump from your running SQuirreL process, we can > estimate, if your number of threads is normal. You can do a thread > dump by "jvisualvm" which is part of your JDK. > Stefan Ahh... I got it. The 49 threads were immediately after starting up SQuirreL, with no open sessions. I ran the thread dump, and I see that I have 32 GC threads, which seems a bit excessive. This system was recently upgraded from a dual-4-core system to dual-8-core with hyperthreading, so it appears as a 32 processor system. So, I may need to use a -XX:ParallelGCThreads=n option. -- Dave |
