On 10/2/07, KAMEZAWA Hiroyuki <[email protected]> wrote:
> On Tue, 2 Oct 2007 00:18:09 -0700
> Andrew Morton <[email protected]> wrote:
> > >
> > > > How come? Memoryless node can and do occur in real-world machines. Kernel
> > > > should support that?
> > >
> > > But a node is just defined by its memory?
> >
> > Don't think so. A node is a lump of circuitry which can have zero or more
> > CPUs, IO and memory.
> >
> > It may initially have been conceived as a memory-only concept in the Linux
> > kernel, but that doesn't fully map onto reality (does it?)
> >
> > There was a real-world need for this, I think from the Fujitsu guys. That
> > should be spelled out in the changelog but isn't.
>
> Yes, Fujitsu and HP guys really need this memory-less-node support.
Anton's post (http://marc.info/?l=linux-mm&m=118133042025995&w=2) (and
my subsequent reposts) may have helped prompt this full series, which
then was picked up and shown to be useful to other folks. NUMA systems
with memoryless nodes exist in the wild and Linux did not do the right
thing there. Admittedly, Anton's case is hugetlb-specific, but the fix
I've been proposing (and hope to repost soon) depends on Christoph's
patches, especially the THISNODE fix.
Thanks,
Nish
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
