Gaz, The way the CPU utilization is calculated for your "show proc cpu" is 99% - 65% = 34%. The 34% is "IP Input" as you stated. The other "missing" 65% is interrupts to the CPU. There really isn't a way to find out exactly what is causing the interrupts to the CPU but since "IP Input" is so high it would be safe to say that it has something to do with packet processing (i.e. fast switching).
Brian Dennis, CCIE #2210 (R&S)(ISP/Dial) CCSI #98640 5G Networks, Inc. [EMAIL PROTECTED] ""Gaz"" wrote: > Hi all, > > This is not really a problem, just curious and not been able to find a > reason for it. > > I went to a site yesterday which ran 3DES on a 2650 with VPN module with > just serial and fast ethernet. The firewall connected to the fast ethernet > had been disconnected ready for me to move the router. I noticed that it > took a while to accept the password, and around a minute for write mem, so I > did a sho proc cpu. > CPU was running constantly at 99%, although looking through the detail there > was only around 35% in total. It was almost all in IP input. > I put no keepalive on the fast ethernet and cpu utilisation went straight > down to 1%. > > Didn't have time to check what traffic was going on. > > Anybody have any explanation? > > Cheers, > > Gaz > > CPU utilization for five seconds: 99%/65%; one minute: 99%; five minutes: > 99% > PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process > 1 2920 3767046 0 0.00% 0.00% 0.00% 0 Load Meter > 2 4 23 173 0.00% 0.00% 0.00% 0 PPP auth > 3 7669232 2230284 3438 0.00% 0.03% 0.02% 0 Check heaps > 4 0 1 0 0.00% 0.00% 0.00% 0 Chunk Manager > 5 8 21 380 0.00% 0.00% 0.00% 0 Pool Manager > 6 0 2 0 0.00% 0.00% 0.00% 0 Timers > 7 5012 12621 397 0.00% 0.00% 0.00% 0 Serial Backgroun > 8 6831 3765897 1 0.00% 0.00% 0.00% 0 ALARM_TRIGGER_SC > 9 356 627773 0 0.00% 0.00% 0.00% 0 Environmental mo > 10 753 315430 2 0.00% 0.00% 0.00% 0 ARP Input > 11 0 25 0 0.00% 0.00% 0.00% 0 DDR Timers > 12 0 2 0 0.00% 0.00% 0.00% 0 Dialer event > 13 0 4 0 0.00% 0.00% 0.00% 0 Entity MIB API > 14 0 1 0 0.00% 0.00% 0.00% 0 SERIAL A'detect > 15 0 1 0 0.00% 0.00% 0.00% 0 Critical Bkgnd > 16 135559 2095603 64 0.00% 0.00% 0.00% 0 Net Background > 17 8 953 8 0.00% 0.00% 0.00% 0 Logger > 18 31610 18804830 1 0.00% 0.01% 0.00% 0 TTY Background > 19 16334 18805051 0 0.00% 0.00% 0.00% 0 Per-Second Jobs > 20 4 2 2000 0.00% 0.00% 0.00% 0 Hawkeye Backgrou > 21 3278 1354 2420 0.00% 0.12% 0.35% 0 Exec > PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process > 22 0 1 0 0.00% 0.00% 0.00% 0 HDV background > 23 0 2 0 0.00% 0.00% 0.00% 0 VNM DSPRM MAIN > 24 0 42 0 0.00% 0.00% 0.00% 0 Net Input > 25 4407 3767048 1 0.00% 0.00% 0.00% 0 Compute load avg > 26 6294136 314153 20035 0.00% 0.04% 0.00% 0 Per-minute Jobs > 27 0 1 0 0.00% 0.00% 0.00% 0 CES Line Conditi > 29 129535 685967 188 0.00% 0.00% 0.00% 0 ecaimLoPri > 30 13206273 2500683 5281 34.77% 33.20% 32.77% 0 IP Input > 31 6215447 2353531 2640 0.08% 0.03% 0.00% 0 CDP Protocol Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=32603&t=32599 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
