I am running a server with CentOS and Apache2. I use Web Host Manager (WHM) for management.
I was changing Apache configuration from WHM. I updated the max child processes from 150 to 100 and saved and restarted the server. Now I keep getting internal server error everywhere on my server.
I also made an automatic memory configuration which set each process memory limit to 64MB.
In my error log I can see following unusual errors after update:
[Fri Jun 29 16:39:18 2012] [error] [client 184.108.40.206] /usr/bin/php: error while loading shared libraries: libmysqlclient.so.16: failed to map segment from shared object: Cannot allocate memory, referer: http://apps.facebook.com/froiden-male-female/... [Fri Jun 29 16:45:50 2012] [error] [client 220.127.116.11] Premature end of script headers: index.php, referer: http://apps.facebook.com/froiden-male-female/