[jboss-user] [Performance Tuning] - Re: 100% CPU usage with lots of memory

DeanoUK do-not-reply at jboss.com
Wed Mar 19 16:16:07 EDT 2008

JProbe or something like that?

Here's an odd one.

[GC 1163367K->948282K(5163904K), 0.0733880 secs]
[GC 1201082K->1033885K(5172672K), 0.2795530 secs]
[GC 1286685K->1035001K(5100352K), 0.1752780 secs]
[GC 1215481K->1035389K(5136512K), 0.0123550 secs]

As usual GC ran - at 19:59 which produces a spike in CPU usage.
But oddly the memory usage also goes up massively and doesn't get collected after:


I'm trying to further my understanding of GC etc, whilst also ensuring this isn't a problem.

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