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Article #26Re: Where does the CPU go, when its not doing nuthin' (gr_osview)
From: Dave Olson
Date: Fri, 18 Dec 1992 02:39
Date: Fri, 18 Dec 1992 02:39
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1435 bytes
In <MBR.92Dec17063936@ponape.bellcore.com> mbr@bellcore.com (Mark Rosenstein) writes:
| When looking at gr_osview, I have a program that uses about 50% of the
| cpu (indigo R4000 elan running 4.05F). The CPU wait line in gr_osview
| is empty, so if the cpu isn't waiting, why doesn't my program get 100%
| of the CPU?
|
| I guess the less naive way of putting this is: What factors aren't captured
| between the CPU Usage and CPU wait?
|
| [The program in question reads in a 16k chunks of stuff off of disk, messes
| around with them and writes them out. All to local disk.]
It's hard to say just where it is waiting. Running osview may be
helpful, as would 'timex -s yourprog'. My guess is that it is indeed
waiting for the disk part of the time.
--
Let no one tell me that silence gives consent, | Dave Olson
because whoever is silent dissents. | Silicon Graphics, Inc.
Maria Isabel Barreno | olson@sgi.com
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Path: arc1-ca.pugleaf.net!sparky!uunet!olivea!sgigate!sgi!twilight!zuni!anchor!olson From: olson@anchor.esd.sgi.com (Dave Olson) Newsgroups: comp.sys.sgi.misc Subject: Re: Where does the CPU go, when its not doing nuthin' (gr_osview) Message-ID: <to01eas@zuni.esd.sgi.com> Date: 18 Dec 92 02:39:22 GMT References: <MBR.92Dec17063936@ponape.bellcore.com> Sender: news@zuni.esd.sgi.com (Net News) Organization: Silicon Graphics, Inc. Mountain View, CA Lines: 20