Date: Wed, 25 Oct 2006 09:54:24 +0200 From: Herve Boulouis <amon@sockar.homeip.net> To: rondzierwa@comcast.net Cc: freebsd-amd64@freebsd.org Subject: Re: Hardware topology Message-ID: <20061025075424.GW46550@ra.aabs> In-Reply-To: <102420062150.6756.453E8A9D000980D700001A6422007613940E999D0A07960B02019D@comcast.net> References: <102420062150.6756.453E8A9D000980D700001A6422007613940E999D0A07960B02019D@comcast.net>
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Le 24/10/2006 21:50, rondzierwa@comcast.net a écrit: > Does the amd64 kernel know anything about which memory is attached to > which processor, and which i/o bus is attached to which hypertransport link? > Can it use this information to do things like allocate pages to a process from > the memory that is physically attached to the cpu upon which the process is > running? Along these lines, is there any way to set affinity between a process > and a cpu (or set of cpu's in the case of multicore)? > > Likewise with i/o devices, if a process or device driver wants to operate a > particular device, can it be set to run on the cpu that owns the hypertransport > connection upon which the device is connected? The freebsd kernel is not NUMA aware, so it doesn't know anything of the underlying hardware topology. -- Herve Boulouis
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