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Kraiser

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:

 

<?PHP
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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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.

Regards,

BobS

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