Hardware topology

[Herve Boulouis]

Le 24/10/2006  21:50, rondzierwa at 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