[111666] in North American Network Operators' Group
Re: Network equipments process utilization
daemon@ATHENA.MIT.EDU (Elmar K. Bins)
Tue Feb 10 03:39:50 2009
Date: Tue, 10 Feb 2009 09:39:44 +0100
From: "Elmar K. Bins" <elmi@4ever.de>
To: =?iso-8859-1?B?Pz8/1z8=?= <lionair@samsung.com>
Mail-Followup-To: "Elmar K. Bins" <elmi@4ever.de>,
=?iso-8859-1?B?Pz8/1z8=?= <lionair@samsung.com>, nanog@nanog.org
In-Reply-To: <10715296.143051234229384202.JavaMail.weblogic@epml04>
Cc: nanog@nanog.org
Errors-To: nanog-bounces@nanog.org
Good morning (from here),
lionair@samsung.com (???=D7?) wrote:
> I wonder which percentage is good level of CPU and Memory util of network=
equipment ?
> In my case, I try to keep under 30% cpu util and 70% memory util. My most=
equipment are Cisco product.=20
> I have no technical reference about that, it is just a rule of mine or my=
predecessor.
> Could you tell me how other operators are doing ? what is your operation =
baseline ? or is there any guideline about process utilization ?
I'm trying to keep all Cisco equipment idle, if at all possible,
since there may come worse times...
Typical exceptions are
- software forwarding routers, where CPU load is directly
depending on current traffic levels; should the load stay
above 15-20% all the time, it's time for an upgrade
- slow-CPU boxes like everything Cisco with SUPs, since the
CPU load _always_ jumps to 100% for short periods of
time - BGP needs something calculated ;-) I get interested
whenever CPU load _stays_ high
- switches; Cisco switches need like 5% CPU to blink the LEDs ;)
It gets more interested with packet filters and load balancers,
where CPU loads depend on traffic levels and patterns. I try to
keep the baseline between 5 and 10%.
HTH,
Elmar.
