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From: Michael Heiming <michael+USE...@www.heiming.de>
Newsgroups: comp.mail.sendmail,comp.os.linux.admin,comp.os.linux.redhat,comp.os.linux.setup
Subject: Re: Memory Usage in a IBM Server running RHEL 3
Followup-To: comp.os.linux.redhat,comp.os.linux.setup
Date: Tue, 15 Mar 2005 10:15:39 +0100
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[ Followup-To --> comp.os.linux.redhat,comp.os.linux.setup ]

In comp.os.linux.setup Samuel Victor <samvicto...@yahoo.com>:
> The following is the top output from a IBM eServer 325 running on a
> AMD Opteron Server. The Server is running Red Hat Enterprise Linux 3.
> The server came loaded with 3GB of RAM and upon constant analysis I
> found that it using less than 1GB of RAM while it shows a iowait of
> 94%. Kindly let me know how to resolve the issue.

First of, are you running the latest patches + update kernel
available from rhn? 'uname -r' should tell concerning the kernel.

> 08:07:30  up 1 day, 17:03,  1 user,  load average: 4.46, 3.45, 3.63
> 189 processes: 187 sleeping, 2 running, 0 zombie, 0 stopped
> CPU states:  cpu    user    nice  system    irq  softirq  iowait   
> idle
>           total    2.5%    0.0%    2.9%   0.0%     0.3%   94.0%   
> 0.0%

Might be just one or another cron/anacron job left over, updatedb
or so, perhaps stuck on a nfs mount? Check what processes 'ps
faux' are most likely for the problem.

> And I also noticed a couple of errors as shown below in the dmesg
> output.

Again, there have been numerous kernel updates for RHEL 3.0, the
problem you are seeing might be resolved some time ago, but alas
without knowing 'uname -r' your kernel version, hard to tell.

BTW
Please don't post a problem completely unrelated to sendmail, to
the sendmail ng, thx.

-- 
Michael Heiming (X-PGP-Sig > GPG-Key ID: EDD27B94)
mail: echo zvpu...@urvzvat.qr | perl -pe 'y/a-z/n-za-m/'
#bofh excuse 288: Hard drive sleeping. Let it wake up on
it's own...