HTTP/APACHE Server Configuration Question & httpd.conf

[jazzer386]

While trying to make sense out of apache.org's configuration instructions, I was wondering why, under httpd.conf's "prefork MPM", StartServers = 8, but under "worker MPM", StartServers = 2. Similarly, under "prefork MPM", MaxClients = 256, but under "worker MPM", MaxClients = 150....and so on.

Anyone know of any reason for this?

The matter does not appear to be addressed, at www.apache.org.

Why are those value not equal?

- j

[vallimar]

Why should they be equal? I suggest you read the documentation on the different MPM's.
In fact, before asking any question here, I suggest you first read the relevant documentation.

[jazzer386]

Fine.

I would like to have read documents, on this issue, but could not find any.

Hence, my question, above.

So, what docs/links do you recommend?

- j

[vallimar]

http://httpd.apache.org/docs/2.2/mpm.html
http://httpd.apache.org/docs/2.2/mod/prefork.html
http://httpd.apache.org/docs/2.2/mod/worker.html

Or: yum install httpd-manual

Essentially, the settings are not equal because the modules are not equal.
One is threaded, one is not, hence they operate in totally different manners
so setting them equally will not produce equal results.

And to add further, you cannot use Fedora's php with anything other than
the prefork mpm because it is not compiled to be threadsafe. That may or
may not apply for other Fedora apache modules as well.

[jazzer386]

Thanks, for the info!

- j