Thanks for all of your replies. First of all, I was really just looking for
the whys rather than any particular recommendation on what values to set
these params to. As far as the permanent generation being part of the heap,
I have been able to verify that the permenent generation (i.e.
Subject: Re: MaxHeapSize + MaxPermSize
Thanks for all of your replies. First of all, I was really just looking for
the whys rather than any particular recommendation on what values to set
these params to. As far as the permanent generation being part of the heap,
I have been able to verify
Well I spose I should of added, on a non enterprise license then :-)
Multiple instances is the method that I have used thus far.
Snake
-Original Message-
From: Dave Watts [mailto:[EMAIL PROTECTED]
Sent: 22 May 2006 20:29
To: CF-Talk
Subject: RE: MaxHeapSize + MaxPermSize
I have
Dave Ross wrote:
Regardless, for CF on Windows (assuming the box has more than 2gb of ram), I
would keep Xmx=1024m and -XX:MaxPermSize=192m. Anything above that and I've
found the 1.4.2 JVM to get unstable.
One of our customers is running at 1.6 GB. I wouldn't exactly
call it stable, but
I believe Dave is correct that permgen is part of the heap. As is the
oldgen and newgen, if memory serves.
As for limits, I've had difficulty setting a max heap size over 1024
while still being able to restart the CF server on Windows. I can't
even reach 1.5 gb. The way it was once explained
How large can the sum of the maximum heap size (-Xmx) and the maximum
permanent generation size (-XX:MaxPermSize) be for a JRun/CF process
on Windows? I'm aware of the 2GB limit for jvm processes on Windows,
but I would have thought that I could set max heap and max perm to any
combination as long
Dante,
I'm pretty sure that MaxPermSize is actually *part* of the heap size - it's
just a cap on the permanent generation space in the heap (as the name suggests).
Regardless, for CF on Windows (assuming the box has more than 2gb of ram), I
would keep Xmx=1024m and -XX:MaxPermSize=192m.
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