Re: [RFC] prefer allocations from nodes w/o CPUs

From: Jesse Barnes <jbarnes_at_engr.sgi.com>
Date: 2004-11-05 04:33:05
On Thursday, November 4, 2004 9:32 am, Alex Tsariounov wrote:
> On Thu, Nov 04, 2004 at 10:11:19AM -0700, Alex Williamson wrote:
> > On Thu, 2004-11-04 at 08:57 -0800, Jesse Barnes wrote:
> > > Small patch for the ia64 version of topology.h to make the zonelist
> > > building code prefer nodes w/o CPUs for allocations.  Do any platforms
> > > aside from Altix have nodes with only memory?  If not, then this will
> > > only affect sn2, otherwise I'm interested in hearing feedback.
> >
> >    Yes, hp sx1000 systems represent interleaved memory in a separate
> > node w/o cpus.
>
> So what's the ramifications of this patch?  Does this mean that
> interleaved memory will now be preferably allocated over cell
> local memory on sx1000 systems?

Memory local to the node will come first, followed by the closest memory that 
doesn't have associated CPUs, followed by memory belonging to other CPUs.

Jesse
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Received on Thu Nov 4 12:34:59 2004

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