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I use a bunch of nginx + php-fpm on a server running Debian Lenny x86_64. Sometimes the PHP-FPM's processes loads all 8 cores at 100% and this load does not fall until to forced restart PHP-FPM. How can I determine what is the problem of such jumps load? In the PHP-FPM's logs is nothing unusual. Version of PHP - 5.3.3.

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This might actually be a problem with your application, not php-fpm itself, so you may want to look there first, as well as double check your current config files for php-fpm, and make sure you don't have high I/O wait on your system.

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I didn't have such problems with my apps on previous server (php-fpm+nginx, debian etch). You can see I/O wait level here - sonicgd.ru/images/cpu-week.png - it looks normal. Current config for php-fpm here - pastebin.com/AavDsPHN –  Sonic Aug 19 '10 at 11:21

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