Apache tuning settings

I've got a site that does about 15 million hits a day, which is load balanced between 4 servers.

We have had one server peaking out on its MaxClients setting, so I've been bumping that up, but it's probably not the best solution. When apache runs out of clients it refuses all other connections, even though cpu/memory resources are fairly low.

Here's what I've got at the moment:

ServerLimit        400
StartServers        10
MinSpareServers     32
MaxSpareServers     64
MaxRequestsPerChild  0
KeepAliveTimeout     2

Code (markup):

Is there a better way to do this? Can anyone help?

TIA

 

This is what I use for my Apache server setting:

Timeout 50
KeepAlive On
MaxKeepAliveRequests 120
KeepAliveTimeout 10
MinSpareServers 10
MaxSpareServers 20
StartServers 16
MaxClients 125
MaxRequestsPerChild 5000

Hope this helps.

 

It doesn't really help, no

What sort of traffic does your site get?

 

its all depending what kind of site u r running

 

we're running a high traffic PHP/MySQL site

 

Try this:

Timeout 30
Keepalive On

Code (markup):

or

Timeout 15
Keepalive Off

Code (markup):

one of those should help a bit, then you can keep tweaking it, just read the apache manual and play with the rest of the values. Don't forget to restart apache each time you modify httpd.conf.

You can also install Zend Optimizer and/or eAcellerator and/or APC

Hope that helps