topic 1142 Poor Performance CPU Spike in Wireless

1142 Poor Performance CPU Spike

justin.cohen — Sun, 04 Jul 2021 07:36:03 GMT

I have a 1142 running W7 Autonomous software. WPA2 Pre-Shared key.

Everything is working - clients connect at 300MB M15 however performance is poor, around 110MB/sec

A show proc cpu shows 100% CPU due to interrupt (not a process)

Anyone seen this before? Both 12.5 and V15 IOS seem to exhibit the same issue.

1142 Poor Performance CPU Spike

Abhishek Abhishek — Tue, 06 Aug 2013 20:07:02 GMT

Hello,

As per your query i can suggest you the following solution-

To exceed the target CPU utilization by a small amount, or a momentary spike in utilization, is not an indication of a problem that needs investigation.

Hope this will help you.

1142 Poor Performance CPU Spike

justin.cohen — Tue, 06 Aug 2013 20:18:03 GMT

Your response doesn't even consider my post - I have constant 100% CPU on the 5GHZ Radio when a user attempts to move traffic. The CPU drops when the traffic goes away.

However the performance of the radio is less than 150MB

1142 Poor Performance CPU Spike

Leo Laohoo — Tue, 06 Aug 2013 22:03:00 GMT

Ok, what does your logs say?

Only on 5 Ghz? I've never seen something like that before.

I'd like to say that it could be traffic re-transmission.