Hi Stephen,
I have written a PDF book on optimizing CF performance which covers
off the optimum settings for the JVM and JRUN so I'll send you a copy
as I recall promising Douglas this at some point in the past. You
should also adjust your maxpermsize (to 128m) as this was a frequent
cause of out of memory exceptions in CF 6.1.
Other than that you are on an old build of Shado (and CF) which can
have a few memory issues (the reason I wrote the book ;-) ) if you are
running very large queries.
Cheers
Grant
On Sep 14, 1:34 pm, Stephen M <[EMAIL PROTECTED]> wrote:
> 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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