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Article #11916Re: Poor thread performance on multi-CPU machines
From: Michael Powell
Date: Sun, 11 Jan 2004 06:47
Date: Sun, 11 Jan 2004 06:47
21 lines
1893 bytes
1893 bytes
Processes not threads. "Alan Bellingham" <alanb@episys.com> wrote in message news:21nuvvocnf0eooaevequlp9tds3coikbkl@4ax.com... > Alan Bellingham <alanb@episys.com> wrote: > > >A _thread_ can only execute on one CPU (or pseudo-CPU in the case of > >Hyperthreading) > ^ > at a time (I should mention) > > On a multiprocessor PC, you'll often find threads jumping from processor > to processor, as the task scheduler attempts to balance load. Unless > they've had their properties set to be confined to fewer. > > Alan Bellingham > -- > Me <url:mailto:alanb@episys.com> <url:http://www.doughnut.demon.co.uk/> > ACCU - C, C++ and Java programming <url:http://accu.org/> > The 2004 Discworld Convention <url:http://dwcon.org/>
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 10cc67,6aabc16a59635b8c X-Google-Attributes: gid10cc67,public X-Google-ArrivalTime: 2004-01-10 22:56:05 PST From: "Michael Powell" <powellmw@comcast.net> Newsgroups: borland.public.cppbuilder.nativeapi References: <3fff05ce$1@newsgroups.borland.com> <3fff2f6f$1@newsgroups.borland.com> <pgkuvv0l8c4cdh8anfkjlpq7h86nr6fofd@4ax.com> <21nuvvocnf0eooaevequlp9tds3coikbkl@4ax.com> Subject: Re: Poor thread performance on multi-CPU machines Date: Sat, 10 Jan 2004 23:47:29 -0700 Lines: 23 X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2800.1158 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 NNTP-Posting-Host: 68.35.190.58 Message-ID: <4000f126$1@newsgroups.borland.com> X-Trace: newsgroups.borland.com 1073803558 68.35.190.58 (10 Jan 2004 22:45:58 -0700) Path: arc1-ca.pugleaf.net!archiver1.google.com!news2.google.com!news.maxwell.syr.edu!newshosting.com!news-xfer1.atl.newshosting.com!203.109.252.33.MISMATCH!newsfeeds.ihug.co.nz!ihug.co.nz!newsgroups.borland.com!not-for-mail