Linux problem

[Don't thread on my tentacles, Earthling!]

Le 9 sept. 07 ? 20:06, Peter Korsten a ?crit :

> So... I'm co-sysadmin of this Linux machine that hosts a number of web
> sites. It's a stand-alone server, running Centos... something or  
> other.
>
> The problem is that the machine is really busy, and now crashes very
> regularly. That it's busy is not something that we can fix right away
> (we'd have to invest in new hardware, which takes money that we don't
> necessarily have), but why is it crashing? Isn't Unix, and by  
> extension
> Linux, supposed to be stable?
>
> What happens is that some operation in httpd or exim causes a 'null
> pointer' fault in the kernel, and then the whole thing goes. Or some
> mysql query won't finish and takes up all processing time,  
> requiring us
> to do a 'kill -9' on mysqld.
>
> Is there anything simple we can do to solve this problem? My solution
> would be to install Solaris, but you know, that's not my decision  
> to make.

RAM

Denis H]