[rhn-users] Hi Memory consuming High

[Lamon, Frank III]

Did you read his response? It's OK because the OS is using over 800MB of memory for disk cache - this is the typical behavior for RedHat. The OS uses free memory as a disk cache to increase IO performance and will give this memory up as applications need it. Read through the thread Simon linked below as well or do a google search for something like: linux disk cache

-----Original Message-----
From: rhn-users-bounces at redhat.com [mailto:rhn-users-bounces at redhat.com]On Behalf Of ram
Sent: Tuesday, July 04, 2006 12:45 PM
To: Red Hat Network Users List
Subject: Re: [rhn-users] Hi Memory consuming High


Hi
 
out of 1GB in see only 80Mb free, but you were saying its good ?
 
is this will not effect my performance of box
 
ram

 
On 7/4/06, Simon Ball < sball at cromwells.co.uk> wrote: 

What's happening here is that the large transfer is mostly ending up in the disk cache in ram. The disk cache will take up ram, but be relinquished when other things need it (ie. it's as good as free memory, over 800meg of it in your case). The reason none of your swap is being used is because you do not in any way need it. Having zero swap usage is a very good thing, using swap instead of ram is a sign your machine is under-speced for the job. 

http://forums.gentoo.org/viewtopic.php?t=175419 provides a reasonably concise overview of the problem here.

simon

----- Original Message ----- 
From: ram < talk2ram at gmail.com>
To: Red Hat Network Users List < rhn-users at redhat.com>
Sent: Tuesday, July 4, 2006 8:41:55 AM GMT+0000 
Subject: [rhn-users] Hi Memory consuming High

Hi all

I have just installed  RHEL ES 4, with everything option
and disabled all the services, except my requirement

when i see free i have found most the RAM free 80% of 1GB RAM 

after some time when i transfer data from another server to this server
95% RAM FULL,

is this something wrong with the RHEL ES Bugs ?

what is the tools to check and free the RAM

i have installed PIII Server with 1GB RAM. 

how would i use SWAP instead of RAM. when iam using any application
most of the time my Swap is not at all used


[root at mail ~]# free
            total       used       free     shared    buffers     cached 
Mem:       1034148    1018396      15752          0      35928     869036
-/+ buffers/cache:     113432     920716
Swap:      1048568          0    1048568


ram


--
Simon Elliston Ball
Infrastructure Manager
Cromwell Business Systems


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