Memory on RHEL 3.0

[Karasik, Vitaly]

  -----Original Message-----
> From: redhat-list-bounces at redhat.com 
> [mailto:redhat-list-bounces at redhat.com] On Behalf Of Yard, John
> Sent: Friday, May 06, 2005 10:15 PM
> To: General Red Hat Linux discussion list
> Subject: Memory on RHEL 3.0
> 
> 
> I have 2 RHEL 3.0 systems 32 bit systems, one has 12G of 
> physical memory, the other has 6G.
> The systems are at the same rpm levels , with the same app 
> running ( Sun LDAP ), configured identically.
> 
> Yet when I do vmstat the memory free is approximately the same .
> ( Also see free memory in meminfo below ). Am I running into 
> a 32bit memory usage limitation ? Is there a better way to 
> configure the system to use the 12G I have available, even 
> though this is 32 bit ?

It's OK, see for more:
"Understanding Virtual Memory"
[http://www.redhat.com/magazine/001nov04/features/vm/] article from RH
Magazine may be a good start point for learning Virtual Memory
Management in linux kernel. 

"Linux Memory Management or 'Why is there no free RAM?"
[http://forums.gentoo.org/viewtopic.php?t=175419] provides VM in linux
overview and answers the famous question " 'Why is there no free RAM?" 

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