Since a few days i recognize that my apache2 is going very slow if it has around 90 current request.
If i do a loader.io test it timeouts for example after 13 successfull requests:
What i really wonder about, is that my CPU usage is normal (screenshot while loader test):
Also my Memory has enough free space.
free -m outputs:
total used free shared buffers cached Mem: 24158 6494 17663 0 259 2492 -/+ buffers/cache: 3742 20416 Swap: 24574 0 24574
My current apache2 settings:
Timeout 20 KeepAlive On MaxKeepAliveRequests 75 KeepAliveTimeout 2 <IfModule mpm_prefork_module> StartServers 10 MinSpareServers 10 MaxSpareServers 30 ServerLimit 200 MaxClients 200 MaxRequestsPerChild 4000 </IfModule>
More Specs as requested:
OS: Debian 6.0.7 (2.6.32-5-amd64) mySQL-Server: 5.5.30-1~dotdeb.0-log (Debian) PHP: 5.3.22-1~dotdeb.0 with Suhosin-Patch (cli)
; configuration for php apc module extension=apc.so apc.enabled=1 apc.shm_size=512M
mySQL Tuning Primer sais also, that everything is ok.
The Site i was testing was a TYPO3 Site with some AJAX on the Startpage.
Just tested the Site on a simple Wordpress on the same Server ( no problems at all )
Success responses: 3097 Avg response time: 1503 Sent from app: 20.86 MB Rcvd from loader: 369.10 KB
Testing on this TYPO3 fails early
Any idea why this happens? Even apache2ctl status gets very slow! But the other things on the system acting normal.
Don´t know why this happens after this time.