[rhn-users] /usr/bin/top showing false values?
White, Shane
Shane.White at health.wa.gov.au
Fri Mar 5 02:28:25 UTC 2004
I think you're showing 4 CPUs because of the hyepthreading feature of
the Xeons. We have a Dell server with 2 Xeons that show the same
result. You say in your follow-up email that you have disabled
hyperthreading in the BIOS - why?
As for the memory use, Linux grabs a lot of RAM even when it's not busy.
It will be available for applications if required. BTW, if you have 2GB
of RAM I believe it's best to have 2-4Gb swap space.
Shane
-----Original Message-----
From: Deks [mailto:deks at sbcglobal.net]
Sent: Friday, 5 March 2004 9:08 AM
To: rhn-users at redhat.com
Subject: [rhn-users] /usr/bin/top showing false values?
Hi Gurus,
I just built an ibm x345 with 2GB ram and 2xCPU(xeon) running Linux ES
3.0 with kernel - Linux version 2.4.21-9.0.1.ELsmp. Apps running are
httpd(stock), sendmail and bind.
This is not yet launched on production so basically this machine is
idle. I ran /usr/bin/top and it gives me these output (sorry for the
display):
17:06:24 up 23:26, 2 users, load average: 0.00, 0.00, 0.00
62 processes: 61 sleeping, 1 running, 0 zombie, 0 stopped
CPU states: cpu user nice system irq softirq iowait idle
total 0.0% 0.0% 0.0% 0.0% 0.0% 0.3% 99.5%
cpu00 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 100.0%
cpu01 0.0% 0.0% 0.0% 0.0% 0.0% 0.6% 99.3%
cpu02 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 100.0%
cpu03 0.3% 0.0% 0.0% 0.0% 0.0% 0.6% 99.0%
Mem: 2061644k av, 1821244k used, 240400k free, 0k shrd, 130680k
buff
832828k actv, 866272k in_d, 24184k in_c
Swap: 1024120k av, 0k used, 1024120k free 1593520k
cached
My concern is how come it shows 4 cpu's and the memory used way the
total. Does that mean when I go to production this machine will need
more memory?
Is there some settings/tuning parameter I should be aware of?
Thanks for any info.
Deks
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