Which settings schould be changed to lower apache CPU usage and use more RAM

apache-2.2cpu-usagehttpd.confkeepalivememory

On our CentOS 6 server, we have now a lot of CPU overload, while our RAM is almost not used.

KeepAlive is set to "on" because we have some AJAX elements on your website and serving many files such as images, etc…

Do you have some recommend settings for me to reduce the apache CPU load? Like said, we have a lot of free RAM on this server, but the CPU power is weak.

Best Answer

Would you accept "fix the programming or get adequate hardware"?

YOu can generally not relplace CPU with RAM - normally too little RAM means swapping which means little CPU utilization, but it does not work the other way.

For me it looks like "proper debugging and optimization based on competent developer knowledge and the use of a profiler" is in order now, this is not a sysadmin issue.

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Redhat – Basic Apache httpd server setup becomes slow to serve images requiring frequent restart

A couple questions:

Have you done any tuning to the Apache.conf file? Which Apache MPM are you using?
What parameters are currently set in the Apache.conf file for:

Timeout
KeepAlive
MaxKeepAliveRequests
KeepAliveTimeout
MinSpareServers
MaxSpareServers
StartServers
MaxClients
MaxRequestsPerChild

Php – Website has become slower on a VPS, was much fast on a shared host. What’s wrong

My guess : your shared host did not limit your CPU and was even faster than your current VPS. Also it might be what happens with a lot of VPS, which is overselling. Your VPS is hosted on a shared machine and you might not get all of your CPU cycles. Also there could be very poor I/O or a slow internet connection.

You do not know what is happening above your VPS on the host machine, try to find it out :).

Best Answer

Related Solutions

Redhat – Basic Apache httpd server setup becomes slow to serve images requiring frequent restart

Php – Website has become slower on a VPS, was much fast on a shared host. What’s wrong

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