My APC always hits 100% Fragmentation. My VPS has 1GB of ram, APC has 256mb allocated to it, but it's only using 100mb on avg(150mb max) out of the 256mb.
I have to restart php-fpm, the 100% Fragmentation slows down my site. Any recommendations?
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You really should set apc.stat=0 on your production server and it will prevent APC from actually going to the IO to check if the file has been changed.
Vahid Chakoshy
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1The apc.stat has zero impact on Apc fragmentation. – user962449 Apr 30 '12 at 08:03
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100% fragmentation don't slow down your site. It is just a problem if APC need to store a big file and there is no place to put it.
Do you use user_cache in your application ?
Do you use apc.php to see how much ram it uses ? The diagram must remain stable. If it change every time then APC is not configured properly.
What kind of website is running on your server ? Some require fine tuning. For example Magento require a max file size of 20M.
bokan
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