--- Aaron Evans <aaroaaronmevansoo.ca> wrote:
> Anton <javajavantik> yahoo.com> writes:
>
> >
> > Hi,
> >
> > I am trying to use jetsjetspeed. I noticed very
> slow
> > performance: with 25 concurrent users it is
> rendering
> > pages ~ 10 sec/page. I am using JMetJMeter hitting
> > home page of the sample site
> > (/jetspeed/default-page.psml) Jetspeed runs
> > with default configuration (HSQL) additional
> > settings: set JAVA_OPTS=-Xmx512m -Xms128m in
> > startup.bat. (This is windows machine, P4 3.0, 1gb
gb> RAM).
> > Also I noticed that it is using 100%CPU all the
> time.
> >
> > Any ideas how to speed up jetsjetspeed >
>
> Anton,
> one thing you should probably do is put your min
> heap size to the same as your
> max (-Xms5Xms) because you could be running into a
> lot of garbage collection
> issues.
>
I did. Doesn't help.
> Also, what version of Java are you running, 1.4 or
> 1.5?
Jdk 1.4.
>
> As for the CPU, it should not be doing much when
> jetsjetspeedidle and not
> being hit. So if it is, then you definitely have a
> problem.
When JetsJetspeedidle, CPU is at 0%. Only when it is
being hit. Also, comparing to Jahia or tomcat - the
same-looking page for 25 concurrent users on the same
machine/configuration takes about 30% CPU. The same
goes to Jetspeed 1 all caching options enabled.
> Memory might
> be the main culprit though. Before setting your heap
> size to a fixed one,
> you should note if the java process moves up to the
> 512 max quickly and
> stays around there. If so, that could mean that you
> should crank it higher,
> maybe around 768.
>
> Anyway, I certainly hope that this is not typical!
> I don't know as I
> haven't gotten that far yet. Has anyone else had
> similar results?
This is valid point: did anyone else did any
performance testing? I'd love to see a results. Also I
might be missing some performance-related
configuration setting (I got rid of almost all
logging, set to true all the "cache" properties I found)
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