This document (BRKARC-2017) turned out to be very useful to determine the possible root-cause. The utilization of the spp and netio processes increase if the router/line-card is software switching traffic, in our case ICMP. We will test the policing feature and implement it.
On Wed, Apr 20, 2016 at 1:17 AM, Micah Croff <micahcr...@gmail.com> wrote: > I've experienced similar behavior on other platforms as well. Sometimes > the output of the box is not correct. We were able to prove this to the > vendor by conducting experiments and graphing the CPU. One of the > protocols they said "couldn't possibly be causing this" turned out to be > the root of the problem. > > I live by one rule when troubleshooting: > The box is a lie. > > Micah > > > On Tue, Apr 19, 2016 at 4:06 PM, Laurent Dumont <ad...@coldnorthadmin.com> > wrote: > > > It coincides with nothing else? More traffic? CPU increasing at regular > > intervals every day without any obvious reasons is probably something > worth > > looking into! > > > > On 4/18/2016 2:14 PM, Scott Weeks wrote: > > > >> > >> --- rege...@gmail.com wrote: > >> From: Rukka Pal <rege...@gmail.com> > >> > >> How do you guys troubleshoot high CPU utilization on the ASR-9K > platform? > >> Detailed guides are available for IOS platforms, but I can't seem to > find > >> anything useful for the ASR. > >> > >> The average line-card (0/0/CPU0: A9K-24x10GE-TR) CPU utilization of my > >> routers is about 10%, however recently I have noticed that 3-5 times a > day > >> it increases to 40% and stays there for about an hour (20% spp + 10% > netio > >> + the rest). > >> > >> I know this is well withing the acceptable range, but I am the kind of > >> person who likes to understand every change in his network and during > the > >> investigation I had to realize that I simply don't have the tools to > >> troubleshoot the ASR CPU. > >> ----------------------------------- > >> > >> > >> On cisco: sho proc cpu > >> > >> scott > >> > > > > >