08-12-2008 05:20 PM - edited 03-03-2019 11:07 PM
Hi Experts,
I have done CPU profiling on the router showing high CPU due to interrupts and this is what i get;
EAHOMNRD5LGP01#profile 0FFFFE00 0FFFFFFF 4
EAHOMNRD5LGP01#show profile terse
PROF FFFFE00 FFFFFFF 4
System Total = 000000504
Interrupt Total = 000000932 (184 percent)
Sched Total = 000004580 (908 percent)
Interrupt [03] = 000000918 (182 percent)
Interrupt [04] = 000000025 (04 percent)
Interrupt [05] = 000000005 (00 percent
Is there anyhow, i can interpret this and find out exactly what chewing up the CPU?
Thanks in advance
08-18-2008 09:12 AM
CPU utilization due to interrupts almost always means that the router is behaving as expected, based on the traffic and features configured. So it may be just reaching the limits of its Capabilites.
08-18-2008 10:39 PM
show proc cpu and see which processes are taking the processor. Lookup the process on Cisco's site to see what the process is.
EX: you might find that IP Forwarding is taking a lot of CPU. In that case you may have a ton of process switched packets (packets with options, packets destined to the router itself, etc). Maybe CEF forwarding isn't on under such a situation.
EX2: You might find SNMP is eating CPU. Maybe some monitoring program is polling it heavily.
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