Re: Kernel doesn't free Cached Memory

[Bill Davidsen <davidsen@tmr.com>]

Al Boldi wrote:
> Dick Johnson wrote: { 
>
> > On Fri, 2005-07-22 at 08:27 -0300, Vinicius wrote:
> > [...]
> >
> > >   I have a server with 2 Pentium 4 HT processors and 32 GB of RAM, 
> > > this server runs lots of applications that consume lots of memory to. 
> > > When I stop this applications, the kernel doesn't free memory (the  
> > > memory still in use) and the server cache lots of memory (~27GB). 
> > > When I start this applications, the kernel sends  "Out of Memory" 
> > > messages and kill some random applications.
>
>
> ...you might even need to turn memory over-commit off:
>   echo "0" > /proc/sys/vm/overcommit_memory
> }
>
> That's in 2.4. In 2.6 it's:
>   echo "2" > /proc/sys/vm/overcommit_memory

RHEL3 *is* a 2.4 kernel.
> But the kernel doesn't honor no-overcommit in either version, i.e. it still
> overcommits/pages-out loaded/running procs, thus invoking OOM!
>
> Is there a way to make the kernel strictly honor the no-overcommit request?

Don't have swap?

--
   -bill davidsen (davidsen@tmr.com)
"The secret to procrastination is to put things off until the
 last possible moment - but no longer"  -me
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