The discrepancy in times could be due to the fact that ab also measures the time to transfer all the data in your web page. If the page is big, that could take some time.

To find out where your time is going, use Devel::DProf. It will tell you exactly where the time is being spent. If it really is mostly compiling modules, switching to mod_perl will remove the issue completely. It's faster than PHP too.

In reply to Re: Startup cost, CGI performance by perrin
in thread Startup cost, CGI performance by dd-b

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