topic 1 CPU missing in Operating System - HP-UX

1 CPU missing

Dani_Galera — Thu, 13 Apr 2006 19:32:36 GMT

hi @ll,

i have one serber with 4 CPU

if you check 'top' you have:

System: sn42049 Fri Apr 14 01:31:07 2006
Load averages: 0.67, 0.67, 0.67
160 processes: 137 sleeping, 22 running, 1 zombie
Cpu states:
CPU LOAD USER NICE SYS IDLE BLOCK SWAIT INTR SSYS
0 0.85 0.0% 100.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0%
2 0.17 0.0% 0.0% 0.0% 100.0% 0.0% 0.0% 0.0% 0.0%
3 0.99 0.0% 100.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0%
--- ---- ----- ----- ----- ----- ----- ----- ----- -----
avg 0.67 0.0% 66.7% 0.0% 33.3% 0.0% 0.0% 0.0% 0.0%

seems to be working with only 3 CPU

but if you check ioscan or mstm all CPU are ok:

n42049:# ioscan -fnC processor
Class I H/W Path Driver S/W State H/W Type Description
===================================================================
processor 0 120 processor CLAIMED PROCESSOR Processor
processor 1 121 processor CLAIMED PROCESSOR Processor
processor 2 122 processor CLAIMED PROCESSOR Processor
processor 3 123 processor CLAIMED PROCESSOR Processor
sn42049:#

Path Product Active Tool Status
==================== ========================= =========== =============
120 CPU (1003) Exercise Successful
121 CPU (1003) Exercise Successful
122 CPU (1003) Exercise Successful
123 CPU (1003) Exercise Successful

does anybody any idea about this problem?
regards

Re: 1 CPU missing

A. Clay Stephenson — Thu, 13 Apr 2006 19:43:32 GMT

Where was the last place you remember having it?

The first thing that I would do (assuming I am not looking at a VPAR) is look for any top cumulative patches. It really helps when you identify your OS version and hardware.

Re: 1 CPU missing

Steven E. Protter — Thu, 13 Apr 2006 19:59:51 GMT

Shalom,

top is not a good judge of how many cpu's are there, especially with the advent of dual core cpus.

fire up cstm or mstm or xstm and see how many cpus are present and test if they are functioning.

SEP

Re: 1 CPU missing

Raj D. — Fri, 14 Apr 2006 02:57:47 GMT

Dani ,

Also check from GSP, with ss command, for the cpu status.

Cheers,
Raj.