swapper using high amount of cpu

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01-05-2008, 11:52 AM

demianphillips@gmail.com

Posts: n/a

swapper using high amount of cpu

I checked the AIX FAQ first and the swapper topics there did not
answer my question.

I am looking at nmon data for a 561 lpar system.
For some reason swapper is showing strange high cpu usage. Otherwise
the system is almost idle. CPU and all hardware resorces are dedicated
and the only virtual stuff is ethernet (so partitions can share data
quickly).
There is no VIO server in this machine.

nmon -x was used to gather data.

For example, here is what the TOP data shows(forgive me if formatting
is off, I used google groups to post):

PID %CPU %Usr %Sys Threads Size ResText ResData CharIO %RAM Paging
Command
0 556.4 0 556.4 1 384 0 384 0 0
4514 Swapper

This does not make sense to me since the system has 8 processors
dedicated (16 if you count SMT threads as secondary processors) and it
barely hits 10% busy (usr+sys) overall on processor use.

Have I hit an "issue" in the version of nmon(10p) I am using?

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swapper using high amount of cpu