Hi Walter,

We're also getting a bit of a memory issue it seems:

2011-09-30 09:54:01  WARN (ServiceRegistryJpaImpl$JobDispatcher:1468) -
Error dispatching jobs
java.lang.OutOfMemoryError: GC overhead limit exceeded

I'm eyeballing calendaring right now, but seems we need a bug for this
issue specifically and try and do some profiling...

Chris

On Fri, 30 Sep 2011
08:20:03 -0500 Walter Schwarz <[email protected]> wrote:

> We've got a different environment but the same symptom, our details
> might be useful.
> 
> RHEL, kernel 2.6.18-238.19.1.el5.x86_64
> java version "1.6.0_26"
> Matterhorn version 1.1.x from about a month ago with some updates
> since then.
> 
> In our case there is a clear error: java.lang.OutOfMemoryError: Java
> heap space.
> We currently have 2048m configured for our java heap space,
> increasing or decreasing that limit lengthens or shortens the time
> the server can run without crashing.  With 2048m it can last about 36
> hours before a crash.
> 
> My workaround has been a nightly restart of matterhorn on admin.  I
> don't like that solution but it is the best option available for me
> right now.
> 
> > Christopher Brooks <[email protected]> 
> > 
> > Hi all,
> > 
> > We're having lots of troubles with our admin server not staying
> > responsive (1.2, 10 agents, maybe 500 entries in the calendars
> > total). Once it's been running for a couple of days java eats up
> > 100% cpu and the UI gets really sluggish.  Let it go for a bit more
> > and calls to rest endpoints end up timing out (e.g. getting a
> > calendar times out).
> > 
> > Anyone else experiencing this?
> > 
> > Right now we are just restarting the admin machine every once and
> > awhile, but this is not awesome, and might be the source of a
> > couple of our other problems.
> > 
> > RHEL, kernel 2.6.32-131.12.1.el6.x86_64
> > java version "1.6.0_26"
> > Java(TM) SE Runtime Environment (build 1.6.0_26-b03)
> > Java HotSpot(TM) 64-Bit Server VM (build 20.1-b02, mixed mode)
> > 
> > Chris
> > -- 



-- 
Christopher Brooks, BSc, MSc
ARIES Laboratory, University of Saskatchewan

Web: http://www.cs.usask.ca/~cab938
Phone: 1.306.966.1442
Mail: Advanced Research in Intelligent Educational Systems Laboratory
     Department of Computer Science
     University of Saskatchewan
     176 Thorvaldson Building
     110 Science Place
     Saskatoon, SK
     S7N 5C9
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