> We are using a web based software developed by our
> company for proving web based email service. Now
> there are about 24000 users on our server. It is
> giving problems:
> 1: server gets hanged up.
Define "hanged up." You get a kernel oops? System doesn't oops but
stops responding to network and keyboard input? System won't respond to
control-alt-delete?
> 2: CPU utilization id very high
Great. Who's using it? Use 'top', 'ps', or whatever your favorite
tool is to track heavy processor users.
> 3: RAM is being used too much.
Great. Who's using it? Use 'top', 'ps', or whatever your favorite
tool is to track memory hogs.
I think you will find that, unless it is misconfigured (e.g. the
startup script is starting qmail over and over again) that qmail isn't
responsible for high CPU or high RAM.
> I need a help to do memory management as well as to
> configure qmail for very heavy loads.
You need to find out who is using all that memory and CPU, and
either fix it or decide you need to add processor and memory. Once you've
got spare capacity on the machine, you should modify your concurrencyremote
setting and your allowed concurrent incoming connections (tcpserver -cN
where N is the max incoming concurrent connections) so that they can use the
capacity. But I recommend fixing your CPU/RAM problems first.
--
gowen -- Greg Owen -- [EMAIL PROTECTED]
