Your CPU is @ 70%, 25% of those spent in interrupt (CEF) packet switching (the difference between 68% and 43% in the five-second figures), yet the IP Input uses only 16%. There might be something else going on?
Ivan http://www.ioshints.info/about http://blog.ioshints.info/ > -----Original Message----- > From: Peter Rathlev [mailto:[email protected]] > Sent: Thursday, April 23, 2009 10:01 PM > To: Chris Lane > Cc: [email protected] > Subject: Re: [c-nsp] 3750 High Cpu IP Input > > On Thu, 2009-04-23 at 13:51 -0400, Chris Lane wrote: > > Having a high cpu with my 3750 not in stack. sh proc cpu | exclude > > 0.00 CPU utilization for five seconds: 68%/43%; one minute: > 69%; five minutes: > > 70% > > PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min > TTY Process > > 168 40336940 92166921 437 15.49% 15.76% 15.97% > 0 IP Input > > > > WS-C3750-48TS 12.2(35)SE2 C3750-ADVIPSERVICESK > > > > According to some old threads this was a bug in some older > IOS which > > was fixed in 12.2(25) > > > > Egress port is quiet: > > 5 minute input rate 11171000 bits/sec, 1353 packets/sec > > 5 minute output rate 2821000 bits/sec, 681 packets/sec > > > > Sure i can upgrade IOS! > > Looking to know WHY this box is so hot! > > When you see the box spending processor time in "IP Input" > it's because it cannot hardware switch the traffic it moves. > This is (almost) always a bad thing when you're looking at a > L3 switch. > > There can be several reasons for this. Features not supported > in hardware (= most features, e.g. GRE or NAT) is one > possible thing. TCAM starvation/overflow could also make the > box do software switching. > > It depends on your configuration. Has it always done this? > > Regards, > Peter > > > > _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
