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High CPU Spikes

tdeganus
Level 1
Level 1

I noticed high utilization on a cisco6509/Sup720. Looking into the "show tech " log shows a high number of drops on the(SVI) VLAN interfaces and lots of interrupt traffic. This is probably causing switch spikes up past normal benchmarks.

What could be causing this

Thanks

SW#sho proc cdp cpu | exclude 0.00

CPU utilization for five seconds: 88%/83%; one minute: 85%; five minutes: 84%

PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process

15 193521704 417755354 463 1.30% 0.74% 0.70% 0 ARP Input

93 1224974641289281891 95 0.57% 0.40% 0.42% 0 IP Input

122 1204 833 1445 0.08% 0.12% 0.07% 1 Virtual Exec

123 24525744 82734041 296 0.08% 0.21% 0.19% 0 CEF process

133 266918001109779682 24 0.16% 0.11% 0.13% 0 Standby (HSRP)

189 6943640881189170497 583 1.79% 1.34% 1.25% 0 Port manager per

222 115184252 85221649 1351 0.08% 0.15% 0.38% 0 SNMP ENGINE

1 Reply 1

JORGE RODRIGUEZ
Level 10
Level 10

This link may help in finding some answers to high cpu util causes.

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

HTH

Jorge

Jorge Rodriguez
Review Cisco Networking products for a $25 gift card