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New Member

higher than normal cpu with spikes to 90 /100% - snmp ? - 6509e

we are seeing network latency problems and our cpu on the 6509e is spiking and have a above average % for the past week or so. When we do see these spikes it seems that snmp and apr input is high

CPU utilization for five seconds: 75%/53%; one minute: 17%; five minutes: 14%

PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process
   9     1636168     95505      17131 4.19%  0.36%  0.34%   0 Check heaps =======>

  12      478096   1011864        472  3.07%  0.12%  0.12%   0 ARP Input =====>
  52       30420    436000         69  0.07%  0.07%  0.07%   0 Per-Second Jobs

  53      317496      7789      40762  0.87%  0.10%  0.06%   0 Per-minute Jobs

220       55380     87807        630  0.07%  0.06%  0.07%   0 Compute load avg

245        1472  13555810          0  0.07%  0.04%  0.02%   0 ACE Tunnel Task

270       96028    544959        176  0.15%  0.12%  0.11%   0 CDP Protocol

300        4220  55097289          0  0.15%  0.19%  0.18%   0 Ethernet Msec Ti

357      210228    640998        327  0.23%  0.15%  0.14%   0 CEF: IPv4 proces

563       16392    867696         18  0.07%  0.06%  0.07%   0 PIM Process

565        2452   3484620          0  0.07%  0.06%  0.07%   0 MLSM Process

568     1487416  20167392         73 7.91%  0.30%  0.26%   0 IP SNMP ===============>

569      564956  10092672         55  0.79%  0.13%  0.10%   0 PDU DISPATCHER

570     4868164  15746389        309  11.51%  1.29%  1.09%   0 SNMP ENGINE =========>
580        1348   1495521          0  0.07%  0.04%  0.05%   0 EIGRP-IPv4 Hello
581       27956   1588064         17  0.07%  0.03%  0.02%   0 EIGRP-IPv4 Hello
582       52384   3349757         15  0.07%  0.06%  0.07%   0 EIGRP-IPv4 Hello

we recently upgraded our 3560 switches to the new 12.2-55 ios version but have not upgraded our 6509 because its ios is on 12.2(33)SXJ1. Not sure if this is related or not but it seems that after we upgraded to the later ios that the latency started.

over the last 24 hours the spike is several times an hour and at least one a day that it hits the 90 - 100 % mark.

is there a way that we can limit what snmp view but would not effect functionality or network?

could this we due to the new IOS's ?

any advise would be great!

2 REPLIES
VIP Super Bronze

higher than normal cpu with spikes to 90 /100% - snmp ? - 6509e

Have a look at this doc on troubleshooting high CPU on the 6500.  You probably need to SPAN the RP to see exactly what is happening.  Also during the high CPU time take a look at the SP by using command "rem command switch show proc cpu" and see if the SP is also loaded.

http://www.cisco.com/en/US/products/hw/switches/ps708/products_tech_note09186a00804916e0.shtml

HTH

New Member

higher than normal cpu with spikes to 90 /100% - snmp ? - 6509e

thank you very much - just what I was looking for

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