like wise I haven't seen this behavior.  when I've run benchmarks against
tomcat, I run tests for 8+ hours with over 1million requests.

you might want to try the distribution graph and see what is happening to
get more information.

peter

On 4/18/06, Oliver Erlewein (DSLWN) <[EMAIL PROTECTED]> wrote:
>
> Hi @ all,
>
> I run a 3h perf test on production and after a constant amount of
> samples (~5000 i.e. ~2h into the test). I get a huge bump in my return
> times. This does not seem to be the application but jmeter/java getting
> into a tangle. After about 12min the results normalise again. Now I've
> run the same test in 3 parts of 1h directly back to back and I don't see
> the bump. The Jmeter machine has more than enough grunt to handle the
> test run. There are parameters in the jmeter and jmeter.bat that I'm
> trying to configure. Tests this evening will show whether that will do
> any change but maybe someone has played around with the parameters and
> has some values that allow for long running big tests.
>
> The "bump" looks something like this:
>
> 60s                  +
>                      +
> 30s                  ++  +
>                      ++ +++
>                      +++++++
> 6s  ++ + ++ + + + +  ++++++++ + +  + +
> 2s  ++++++++++++++++++++++++++++++++++
>
> Regards & Thank you
> Oliver
>
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