This is from our JVM arguments:
-server -Dsun.io.useCanonCaches=false -Xbootclasspath/a:"{application.home}/
../lib/webchartsJava2D.jar" -XX:MaxPermSize=384m -XX:+UseParallelGC -Xss1m
We use XX:MaxPermSize=384m with our min heap at 512m and max at 1024m
Read:
http://www.unixville.com/~moazam/stories/2004/05/17/maxpermsizeAndHowItRelatesToTheOverallHeap.html
Its not the garbage collection setting but the size the heap grows and
shrinks by. We came to the conclusion that the 64m was too small for a busy
application (cannot grow fast enough)
Before updating this to 384 our machines would run fine for about 18hrs then
all bomb out.
Steve
----- Original Message -----
From: "Robertson-Ravo, Neil (RX)" <[EMAIL PROTECTED]>
To: "CF-Server" <[email protected]>
Sent: Wednesday, January 12, 2005 5:47 AM
Subject: RE: stability
> Eh? What setting are you using for this?!
>
>
>
> -----Original Message-----
> From: SteveK [mailto:[EMAIL PROTECTED]
> Sent: 12 January 2005 10:48
> To: CF-Server
> Subject: Re: stability
>
> Try increasing your garbage collection. We had to increase ours to 384mb
to
> get some stability. Play with the setting in small increments.
>
> Steve
>
> ----- Original Message -----
> From: "Bert Dawson" <[EMAIL PROTECTED]>
> To: "CF-Server" <[email protected]>
> Sent: Monday, January 10, 2005 2:41 PM
> Subject: Re: stability
>
>
> > We've set -Xms862m -Xmx862m (and both to 512 on the box withonly a gig
> > of ram), so i don't think it can be the 1.8gb thing. (the 1.4 gig
> > usage i mentioned was reported in task manager).
> >
> > As for garabge collection, we've changed from (i think):
> > -XX:+UseParallelGC
> > to:
> > -XX:+UseConcMarkSweepGC
> >
> > Prior to that switch then JRun would just crash, and require a manual
> > restart, and now it will re-start itself, which i suppose is a
> > blessing.
> >
> > The main question is where to go next?
> >
> > Cheers
> > Bert
> >
> > On Mon, 10 Jan 2005 20:34:37 +0200, Erki Esken <[EMAIL PROTECTED]>
> wrote:
> > > On Mon, 10 Jan 2005 17:41:03 +0000, Bert Dawson <[EMAIL PROTECTED]>
> wrote:
> > > > I've got a couple of servers running enterprise and they keep
> crashing.
> > > > Usually they restart themselves, and the only downside is everyone
> > > > losing sessions, and delayMS and CPU go through the roof for a
minute
> > > > or two.
> > > > Looking at memory usage and CPU they seem to be fine: CPU around
> > > > 10-20%, using 1.4gb memory being used on a 4gb box.
> > >
> > > Maybe it's related to the 1.8 GB memory limit of CF? What's the upper
> > > limit of JVM memory usage on that server? Maybe it dies when memory
> > > usage goes past 1.8 GB. See also:
> > >
>
http://www.macromedia.com/cfusion/knowledgebase/index.cfm?event=view&extid=t
> n_19359
> > >
> > > And try searching "jvm" or "garbage collection" at
> > > http://fullasagoog.com/ for hints on troubleshooting JVM GC issues.
> > > There are good blog posts about this.
> > >
> > > --
> > > Erki
> > >
> > >
> >
> >
>
>
>
>
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