ab - HTTP Benchmarking
Apache offers a very user friendly benchmarking tool called 'ApacheBench (ab)'. It's designed to give you an idea of how your current apache setup is performing and comes bundled with the standard Apache source distribution.
Commands to run...
Make 50 requests with a concurrency of rate of 5.
ab -n 50 -c 5 http://localhost/
Open 10 KeepAlive connections for 15 seconds.
ab -kc 10 -t 15 http://localhost/
Plus there are loads more to be found at http://httpd.apache.org/docs/2.0/programs/ab.html.
Results are fairly self explanatory and printed in a nice tabular format, these can then be used to optimise/fine-tune you server setup.
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