topic Re: strange output from 'top' command in Operating System - HP-UX

strange output from 'top' command

yulianto piyut — Tue, 07 Nov 2006 04:30:20 GMT

hi all,

we have one system that have a strange output from 'top' command. below is output from 'top' command.

Load averages: 0.51, 0.51, 0.51
136 processes: 133 sleeping, 3 running
Cpu states:
CPU LOAD USER NICE SYS IDLE BLOCK SWAIT INTR SSYS
0 1.00 100.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0%
1 1.02 4.0% 0.0% 1.0% 95.0% 0.0% 0.0% 0.0% 0.0%
2 0.00 0.0% 0.0% 0.0% 100.0% 0.0% 0.0% 0.0% 0.0%
3 0.00 0.0% 0.0% 0.0% 100.0% 0.0% 0.0% 0.0% 0.0%
--- ---- ----- ----- ----- ----- ----- ----- ----- -----
avg 0.51 -100.0% -0.0% -0.0% 200.0% -0.0% -0.0% -0.0% -0.0%

what happened with my system? anyone now about this ?

-yut-

Re: strange output from 'top' command

Peter Godron — Tue, 07 Nov 2006 04:34:02 GMT

Hi,
if you are worried about the - signs :
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=794872

Otherwise it looks as if you have a process tied to a single processor, which running at 100%. You still have plenty of CPU capacity available.

Re: strange output from 'top' command

Steven E. Protter — Tue, 07 Nov 2006 05:05:10 GMT

Shalom,

This is quite common on systems running software written to a single thread.

With very little effort it is possible for a program to bind to a CPU and use it fully.

Switching cpu's does degrade performance which is why com people write software like that.

The bottom line is a normal top mistake in multi processor systems. Upgrading top can sometimes help but I've noticed quirks in every version of top I ever used.

SEP

Re: strange output from 'top' command

Peter Godron — Thu, 09 Nov 2006 09:47:03 GMT

Hi,
have you got the information you need?
If you are happy with the answers given, please award points and close the thread, summarising the solution.
Thanks