Date: Wed, 6 Feb 2002 12:45:40 -0500 From: Michael Lucas <mwlucas@blackhelicopters.org> To: Charles Peterman <cjp@sandbox.sandstorm.net> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: Binding a Process to a specific CPU Message-ID: <20020206124540.A49624@blackhelicopters.org> In-Reply-To: <Pine.LNX.4.33.0202061129160.17154-100000@sandbox.sandstorm.net>; from cjp@sandbox.sandstorm.net on Wed, Feb 06, 2002 at 11:31:58AM -0500 References: <Pine.LNX.4.33.0202061129160.17154-100000@sandbox.sandstorm.net>
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Short answer: no. This requires some way of telling processes which CPU to bind to, i.e., CPU affinity. Right now, FreeBSD assigns processors based on a simple "scatter" algorithm. On Wed, Feb 06, 2002 at 11:31:58AM -0500, Charles Peterman wrote: > > I am currently playing with a dual CPU machine. > With 4.5, is there a way to guarantee that > two specific processes never end up on the same > processor? > > Or does this question betray my fundamental > ignorance of how processes are allocated on an > SMP based machine? > > Thanks much, > > Charles Peterman > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-hackers" in the body of the message -- Michael Lucas mwlucas@FreeBSD.org, mwlucas@BlackHelicopters.org my FreeBSD column: http://www.oreillynet.com/pub/q/Big_Scary_Daemons http://www.blackhelicopters.org/~mwlucas/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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