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=tn_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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