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Apache high cpu usage during F5 and PHP code


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Well how to avoid that while an user spams f5 on my site the CPU goes to about 50 % ,I'm using simple script to test it out:


echo "asd";


on linux the apache used mpm_prefork on which user was unable to do something like this but ram consuming was VERY huge while you had many users on the site here we use mpm_winnt multi processing module.

before on xampp the problem was same , I switched to uniform server since it has all newest packages apache,php,mysql .



I have also tried easyPHP there wasn't such problem probably because they aren't using any php accelerator like uniform server and xampp do use fe. eAccelerator 1.0-snv427 but loading of the pages on easyphp was there not really fast for me.


How can I protect against this ? Some protection which will ban the user from the site for x minutes after spam of refresh mod_easive on linux what I can use on windows?

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  • 6 months later...

Interesting problem, but well beyond my understanding of Apache operation and optimization.


Have you searched Apache forums for anything on this? Obviously, they understand more about Linux/Windows differences, and that's why they have a mpm_winnt multi processing module. Perhaps a search of windows and mod_easive might turn up something as well.


It may also be related to the way eAccelerator works, and switching to the new 8-Coral version will let you change to the APC PHP accelerator.


At this point, I'd say you're on your own, unless Ric has something up his sleeve.



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