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From Roy Wilson <>
Subject RE: Just another Benchmark
Date Fri, 02 Mar 2001 19:00:50 GMT

See below.



> -----Original Message-----
> From: Thomas Bezdicek []
> Sent: 02 March 2001 09:50
> To:
> Subject: Just another Benchmark

> Hi,

> we tried the apachebench on our solaris system, to check out
> differences between architectures and thereby we found a quite
> interesting behaviour.

> When serving a static page, apache uses the whole machine
> resources while tomcat isn't (CPU usage 100% to 20%) and for
> maybe this reason isn't serving at the same speed as apache.
> Is there a limit somewhere in the java net or in tomcat?

Just curious: you say "CPU usage 100%". I guess what I'm asking is 
whether you assume that Apache keeps the CPU busy 100% of the time based 
on the ratio of the throughputs (requests per second) or whether you 
measured CPU busy using sar (or something like it). FWIW, in measurements 
of Apache I've done, I've rarely seen CPU utilization above about 75%.


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