Hi,

I've posted about this before, but got some more info now.

We have a standard apache -> tomcat -> oracle system.  In the db we can
access the total time spent in tomcat and oracle.  By analysing the apache
logs (modjk gives you an elapsed time) we can log the time spent in apache,
tomcat and oracle.

And then of course jmeter gives us the overall end to end response times.

The problem i have is that at higher loads, the gap of response times
reported by jmeter grows much faster than it does when reported at the
apache layer.  So i thought this was caused by a busy jmeter server.

So i ran 2 jmeters on 2 separate servers independantly (At half load). 
Unfortunately the gap remains.

Is this a usual scenario that people see at high loads?  could the figures
being reported be lieing to me?  The DB server is under load at this point
but none of the other servers seem stressed.  I'm a bit stuck in how to
debug this further?

Thanks,
Dan

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