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!
