Date: Mon, 07 Dec 1998 12:43:02 +0800 From: Peter Wemm <peter@netplex.com.au> To: "Gary Palmer" <gpalmer@FreeBSD.ORG> Cc: Marcel van Kervinck <marcelk@stack.nl>, smp@FreeBSD.ORG Subject: Re: Pthreads and SMP Message-ID: <199812070443.MAA17869@spinner.netplex.com.au> In-Reply-To: Your message of "Sun, 06 Dec 1998 11:41:36 EST." <51430.912962496@gjp.erols.com>
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"Gary Palmer" wrote: > Marcel van Kervinck wrote in message ID > <19981206172549.A11335@unox.student.tue.nl>: > > Hello, > > > > Perhaps I've missed something obvious But: it seems to me that a process > > that uses multiple threads doesn't spread them over more processors? > > I tried on a dual PII, running fbsd 3.0, and a program that simply did > > a few pthread_create() calls. > > Correct. No-one with enough skill to do the work necessary to get thread > migration supported has had the time... It's not so much a question of skill, it's just a moderately big job with a fairly large kernel vm/pmap layer impact and nobody (so far) has had the time to do it. And then there's the issue of connecting the kernel support up to a thread library to implement the posix interfaces to it. > Gary Cheers, -Peter -- Peter Wemm <peter@netplex.com.au> Netplex Consulting To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message
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