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  3. February 2018

Re: Tomcat server and a replication product both using lots of CPU

On 2/7/18, 12:15 PM, Pete Helgren wrote:
GC is what usually spikes CPU for me. Have you taken a look at GC using
WRKJVMJOB? Might be a clue there...

OK, here it is.
Garbage collected heap:
Initial heap size . . . . . . . . . : 512.000M
Maximum heap size . . . . . . . . . : 2048.000M
Current heap size . . . . . . . . . : 2039.809M
Heap in use . . . . . . . . . . . . : 1755.112M

Other memory:
Internal (break) memory size . . . . : 323.742M
JIT memory size . . . . . . . . . . : 48.000M
Shared classes memory size . . . . . : 0.000M
General GC information:
Current GC cycle . . . . . . . . . . : 671
GC policy type . . . . . . . . . . . : OPTTHRUPUT
Current GC cycle time . . . . . . . : 3281
Accumulated GC time . . . . . . . . : 2797967

This does tell me it's using an awful lot of heap. I'm not entirely sure how much bigger I can go with the -Xms and -Xmx Java opts (but I distinctly remember that there *are* limits). They're running in a 1.6 JVM.

--
JHHL

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