topic top output question in Operating System - HP-UX

top output question

George_Dodds — Fri, 21 Jan 2005 09:12:11 GMT

While investigating a performance issue i looked at top, why is there a minus sign for some of the averages? just i have not seen this before.

Load averages: 0.77, 0.74, 0.76
81 processes: 77 sleeping, 4 running
Cpu states:
CPU LOAD USER NICE SYS IDLE
0 0.71 99.6% 0.0% 0.2% 0.2%
1 0.89 83.6% 0.0% 1.0% 15.4%
2 0.69 16.0% 0.0% 1.0% 83.0%
--- ---- ----- ----- ----- -----
avg 0.77 -0.0% -0.0% -0.0% 100.0%

BLOCK SWAIT INTR SSYS
0.0% 0.0% 0.0% 0.0%
0.0% 0.0% 0.0% 0.0%
0.0% 0.0% 0.0% 0.0%
----- ----- ----- -----
avg -0.0% -0.0% -0.0% -0.0%

Memory: 19776K (11232K) real, 176968K (152452K)
virtual, 148464K free Page# 1/9

Re: top output question

Fred Ruffet — Fri, 21 Jan 2005 09:16:56 GMT

I remember an hold thread about that, where problem have been solved applying last patches.

Regards,

Fred

Re: top output question

Stephen Keane — Fri, 21 Jan 2005 09:27:36 GMT

Do you have PHCO_29072 installed?

Re: top output question

Jeff Schussele — Fri, 21 Jan 2005 09:31:42 GMT

Hi George,

top is notorius for anomalies - I'd apply the latest 11.11 cumulative patch - here:

http://www1.itrc.hp.com/service/patch/patchDetail.do?BC=patch.breadcrumb.main|patch.breadcrumb.search|patch.breadcrumb.patchDetail{PHCO_29072,hpux:800:11:11}|&patchid=PHCO_29072&context=hpux:800:11:11

11.01 here:

http://www1.itrc.hp.com/service/patch/patchDetail.do?BC=patch.breadcrumb.main|patch.breadcrumb.search|&patchid=PHCO_26020&context=hpux:800:11:00

HTH,
Jeff

Re: top output question

TwoProc — Fri, 21 Jan 2005 09:37:32 GMT

I've noticed it before- and have only seen this negative sign assigned to zero values. What's the difference between zero and minus zero? I'm sure there's a calculation in there somewhere that ended up being something like -.00000566 or some such - due to subtraction of all the little loads from 100 percent (guessing). Not enough to worry about.

Reminds of a mathematics theory class I had - and it spent a chunk of a lecture on the "sign" of zero... Never thought I'd think of that one again...

Re: top output question

George_Dodds — Fri, 21 Jan 2005 09:58:46 GMT

This is running 11.00 and is classed as a quarantined system so no patches unless it is critical.

I'm migrating to 11i soon anyway.

Ta

George

Re: top output question

George_Dodds — Fri, 21 Jan 2005 10:01:03 GMT

There you go i've learnt something new :)