I'm facing the following problem on my nginx/php-fpm server : I get random 502 (bad gateway) errors on AJAX calls (autocompletion actually). Everything else is working fine, except autocompletion.
On my php-fpm.log, I got a huge amount of process dying (signal 11) after like 18 hours or so... This doesn't look correct right?
What can make this happen? I already tweaked pm.max_request, max execution time... And I'm having a dynamic php-fpm pool.