> >> > > As an additional note to the above, the "LIVE" server restarts
> >
> >Your original post states that the problems occur in the evening/
> overnight
> >and your CF service is re-started at 7am every morning. With those
> symptoms
> >I'd really look at doing some investigation work on your JVM settings
> and
> >memory usage. If your memory usage is getting tight after 12 hours,
> you may
> >need to change the way your JVM is performing its garbage collection.
>
> >
> >When you are invoking the web service, the class files may be being
> >re-generated and becoming corrupt if there are memory issues which
> would
> >then cause your subsequent problems over the rest of the evening.
> >
> >We are running CF8.01 and handling an average of 100 DB queries per
> second
> >(under load we peak at around on our site and our JVM settings are
> as
> >follows:
> >
> >Min JVM heap MB: 1152 Max: 1152
> >
> >JVM arguments
> >
> >-server -Dsun.io.useCanonCaches=false -XX:MaxPermSize=384m -Xmn192m
> >-Dcoldfusion.rootDir={application.home}/../
> >-Dcoldfusion.libPath={application.home}/../lib
> -XX:+UseConcMarkSweepGC
> >-XX:+CMSIncrementalMode -XX:+UseParNewGC
> >
> >
> >What we found was that our EDEN memory allocation was too low and
> out
> >garbage collection wasn't working effectively with the standard
> settings so
> >we switched to using two GC collectors and increased the EDEN memory
> >allocation to 192Mb.
> >
> >Since we tuned the JVM the server will stay up for months at a time
> without
> >any service restarts or memory issues :-).
> >
> >Paul
>
> Hi Paul,
>
> Thanks for the response, I'll check through the logs on the server and
> the settings as advised as that explanation does sound viable. The
> observations over timing are very rough, it did occur yesterday at
> approx 14:00 also but that would still be after many hours uptime.
>
> - Simon H
It looks as though this issue still recurred though I have no new information
to go with the issue. I will probably make some adjustments later on to see if
that helps
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