Re: Re: Kernel doesn't free Cached Memory

[Adrian Bunk <bunk@stusta.de>]

On Fri, Jul 22, 2005 at 09:02:05AM -0300, Vinicius wrote:
Content-Description: Mail message body
> 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. 
> >> 
> >>    Anyone know how can I reduce the kernel cached memory on RHEL >>3 
> (kernel 
> >> 2.4.21-32.ELsmp - Trial version)? There is a way to reduce the >>kernel 
> >>cached 
> >> memory utilization? 
> 
> >Probably RedHat's support can answer this for RHEL 3. 
> > 
> >	Bernd 
> 
> Bernd, 
> 
>    The server runs RHEL Trial Version, without support... for tests purpose. 
>...

The answers you already got are:
- for that much memory, 64bit processors are really recommended
- 2.6 kernels are a better choice for this scenario
- linux-kernel doesn't support vendor kernels, does the same problem 
  occur with kernel 2.6.12 ?

Another thing that surprises me is that why you are testing an old 
version of RHEL.

If you want to build a new system, you should better test RHEL 4.

> Vinicius. 
> Protolink Consultoria. 

cu
Adrian

-- 

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