Hi All,

I have a p550 server with 4 proc. But when i run nmon analyzer in cpu_sum it show 5 processors cpu0 cpu1 cpu2 cpu3 cpu4. Why it is showing 5 processors.

do you have the cpus configured as shared as a pool to enable the box to use it when noone else need it ?
That might explain what you see

Rgds
zx

Is it a full system partition or an LPAR'd machine?
p5 cpus are dual core so if it's a full system partition then I would expect to see 8 cpus, where did the other 3 go?

What does the folowing command show:

lscfg -vp | grep -i proc

what do these show

lparstat -i
lsdev -Ccprocessor

Its not a Lpar system the out put of followin commands are as below.

# lsdev -Cc processor
proc0 Available 00-00 Processor
proc2 Available 00-02 Processor
proc4 Available 00-04 Processor
proc6 Available 00-06 Processor

# lscfg -vp | grep -i proc
Model Implementation: Multiple Processor, PCI bus
proc0 Processor
proc2 Processor
proc4 Processor
proc6 Processor
2-WAY PROC CUOD :
2-WAY PROC CUOD :
#

I think you need to report this error on Nigel, the creator of nmon analyzer.

Or maybe use the newer version, maybe this bug had been fixed.

Sure looks like a bug to me.
Email Nigel.
I think he is away at the moment but he should get back to you in a week or two.