topic CPU Calculation in Application Networking

CPU Calculation

bjames — Fri, 02 Nov 2001 02:24:24 GMT

Hi,

What formula/calculation does Cisco use on the content switches for CPU Utilization? Our switches show 100% utilization, but the switches seem to be functioning normally.

Thanks in advance

Re: CPU Calculation

dwmcguire — Fri, 02 Nov 2001 09:30:35 GMT

Funny you should mention that. I'm checking in here to see if anyone's mentioned seeing CSS 11154's go to 100% CPU after being accessed with a browser to manage them rather than telnet. Ours are running v5.005 & we just discovered this to be the case. The switch doesn't "act" like it's at 100% - not sluggish to type on or sisplay commands via console or telnet, not enough connection activity to warrant it, etc. I'm about to search the buglist then open a TAC case. Maybe this is your issue, too.

Good Luck,

Dennis

Re: CPU Calculation

bjames — Fri, 02 Nov 2001 17:48:25 GMT

Dennis,

These are 11050 switches running V.501, and we new the http sessions would increase CPU, but we see it at 100% even with Telnet, and they usually show 100% all the time.

Performance seems fine though.

Bob

Re: CPU Calculation

dwmcguire — Mon, 05 Nov 2001 14:34:40 GMT

Hmmm, must be some other combination of events that's triggered the CPU display bug.

We actually tried v5.02 awhile ago but it also had a CPU display bug, something to do with the way VRRP was being handled. Maybe the bug also exists in 5.01... are these redundant boxes?

Re: CPU Calculation

bjames — Mon, 05 Nov 2001 15:15:35 GMT

Dennis,

The boxes are not in redundant mode right now. Both display the 100% Utilization issue, even when telneted in.

I'm sure it's a bug, but a Cisco SE will be coming in this week and he will have a look at it.

I will let you know the results.

Bob

Re: CPU Calculation

b59048 — Tue, 04 Dec 2001 12:29:59 GMT

It is a known bug. It is fixed in

WebNS 5.02Build 3: ap0502003 (on CCO) - I tried it

on a CSS11800 and it worked.