IIS Express Requests Take 4 Times Longer To Execute
Jan 25, 2011
I have uploaded the WCAT results run on windows 7, same script, to http://d1yb9lkqglrfzu.cloudfront.net/IISExpress-100VU-MachineConfig.zip ts: included XSL in zip.
1.IIS Express has slighter higher requests per second, and total transactions served than normal IIS.
2.IIS Express is executing up to 100 requests at a time, while normal IIS on windows 7 is limited to 10 as designed.
3.IIS express is using 30% higher cpu, probably because of additional requests it handles at a time.
4.But on average Express requests take much longer to complete..up to 4 times longer. see Request Execution Time performance counter and time analysis (first and last byte). Express is only able to beat IIS in total requests served because it can handle more requests at a time! Theories
1.Could the fact that IIS express is printing each request to command line window even with trace set none be slowing it down.
2.I also noticed a lot of additional modules registered in IIS express applicationhost.config that are not in IIS applicationhost.config. Could then extra debugging/tracing modules be causing the problem.
3.I notice IIS express does not have FileCache and HTTPCache modules. Could that be why?
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