Anyone running PHP-FPM in production with Apache 2.2? PHP-FPM is considered "stable" as of PHP 5.4. I've got it running on 1 production box now, but have no benchmarks yet.
If you have any sites that love to do consistent refreshes, it seems you've got to up the "pm.max_children" and of course have "pm.max_spare_servers" set fairly high. If running regular mod_php, these sites usually just put a lot of Apache children in TIME_WAIT state.
Google searching for comparisons between the two is usually done on Nginx, would love to see some more comparisons for Apache+PHP-FPM
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