Nmon and Aix 5.3 ML3

[bdw238]

Hello,

On one of Aix 5.3 machines we are running nmon to monitor the CPUS, we have noticed on the odd occasion that a CPU row goes missing on nmon output. For example on output below, CPU 2 will go missing :

qqnmon-v10rqqqr=ResourcesqqqqqqqqHost=skyhawkqqqqqqqqRefre
lqCPU-Utilisation-Small-Viewqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq
x 0----------25-----------50----
xCPU User% Sys% Wait% Idle%| | |
x 0 8.3 18.6 64.7 8.3|UUUUsssssssss

http://WWWWWWWWWW>

|x
x 1 0.0 0.5 0.0 99.5|>
x 2 24.5 18.1 53.9 3.4|UUUUUUUUUUUUsssssssss

http://WWWW>>|x

x 3 0.0 1.0 0.0 99.0|>
xSystem Averages +-----------|------------|----
xAll 8.4 9.7 30.2 51.7|UUUUssss

http://WWWWWWWWWWWWWWW

x +-----------|------------|----

Is this a nmon bug, has anyone else seen it occur out there?

 

[Gloups]

I dont realy find any bug in your output. Only to threads or two active applications using to CPUs.

Where do you find a problem ?

 

[bdw238]

So, if CPU 2 goes missing then the following will occur to the output; see below. A bit more info.

Note (not 100% sure) this nmon problem will only occur when Oracle kills the server. I and my team, IBM are 100% sure the OS and hardware are fine.

qqnmon-v10rqqqr=ResourcesqqqqqqqqHost=skyhawkqqqqqqqqRefre
lqCPU-Utilisation-Small-Viewqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq
x 0----------25-----------50----
xCPU User% Sys% Wait% Idle%| | |
x 0 8.3 18.6 64.7 8.3|UUUUsssssssss

http://WWWWWWWWWW>

|x
x 1 0.0 0.5 0.0 99.5|>
x 3 0.0 1.0 0.0 99.0|>
xSystem Averages +-----------|------------|----
xAll 8.4 9.7 30.2 51.7|UUUUssss

http://WWWWWWWWWWWWWWW

x +-----------|------------|----

As I said before, has anyone else seen this problem with nmon?

Thanks


Bri