I've got a 6.1MX system that is crashing way too often. It might be
the Shado content management setup, but I'm asking that question on
another forum.
Ithought I should try to tweak the admin settings. I have just found
a few java.lang.OutOfMemoryError errors in the exception log so that
means I should increase the JVM Max Heap size doesn't it?
Although the OutOfMemoryError doesn't always correspond to the crashes
so there is probably something else going on as well.
At the moment the JVM Max Heap size is set to 512MB, there is no Min
size set. A bit of googling through various java mailing list
archives suggests I should set Min to the same as Max for improved
performance.
Any suggestions? Its way too late for load testing. I've just got to
stick something in to see if it works better. I'm aware that
increasing the Max heap setting makes for more work for the Garbage
Collector and could therefore result in decreased performance. Are
there any other potential problems?
To complicate thing I have the following startup string set. Again,
my search of the archives suggests that MaxpermSize is a different
parameter not related to Max or Min Heap size. Should I be adjusting
this string as well.?
-server -Dsun.io.useCanonCaches=false -Xbootclasspath/
a:"{application.home}/../lib/webchartsJava2D.jar" -XX:MaxPermSize=128m
-XX:+UseParallelGC
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