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