From: Anthony Liguori <anthony@codemonkey.ws>
To: Avi Kivity <avi@redhat.com>
Cc: Andre Przywara <andre.przywara@amd.com>,
kvm@vger.kernel.org, "Daniel P. Berrange" <berrange@redhat.com>,
Andi Kleen <ak@suse.de>
Subject: Re: [PATCH 0/3] KVM-userspace: add NUMA support for guests
Date: Mon, 01 Dec 2008 09:34:43 -0600 [thread overview]
Message-ID: <49340413.9090003@codemonkey.ws> (raw)
In-Reply-To: <4934027D.8080904@codemonkey.ws>
Anthony Liguori wrote:
>
> numactl --offset=0G --length=1G --membind=0 --file /dev/shm/A --touch
> numactl --offset=1G --length=1G --membind=1 --file /dev/shm/A --touch
>
> And then create the VM with:
>
> qemu-system-x86_64 -mem-path /dev/shm/A -mem 2G ...
>
> What's best about this approach, is that you get full access to what
> numactl is capable of. Interleaving, rebalancing, etc.
Prefaulting, generating an error when NUMA placement can't be
satisified, hugetlbfs support, yeah, this very much seems like the right
thing to do to me.
If you care enough about performance to do NUMA placement, you almost
certainly are going to be doing hugetlbfs anyway so you get it
practically for free.
Regards,
Anthony Liguori
> Regards,
>
> Anthony Liguori
next prev parent reply other threads:[~2008-12-01 15:34 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-27 22:23 [PATCH 0/3] KVM-userspace: add NUMA support for guests Andre Przywara
2008-11-28 8:14 ` Andi Kleen
2008-11-29 18:43 ` Avi Kivity
2008-11-29 20:10 ` Andi Kleen
2008-11-29 20:35 ` Avi Kivity
2008-11-30 15:41 ` Andi Kleen
2008-11-30 15:38 ` Avi Kivity
2008-11-30 16:05 ` Andi Kleen
2008-11-30 16:38 ` Avi Kivity
2008-11-30 17:04 ` Andi Kleen
2008-11-30 17:11 ` Avi Kivity
2008-11-30 17:42 ` Andi Kleen
2008-11-30 18:07 ` Avi Kivity
2008-11-30 18:55 ` Andi Kleen
2008-11-30 19:11 ` Skywing
2008-11-30 20:08 ` Avi Kivity
2008-11-30 20:07 ` Avi Kivity
2008-11-30 21:41 ` Andi Kleen
2008-11-30 21:50 ` Avi Kivity
2008-11-30 22:08 ` Skywing
2008-11-28 10:40 ` Daniel P. Berrange
2008-11-29 18:29 ` Avi Kivity
2008-12-01 14:15 ` Andre Przywara
2008-12-01 14:29 ` Avi Kivity
2008-12-01 15:27 ` Anthony Liguori
2008-12-01 15:34 ` Anthony Liguori [this message]
2008-12-01 15:37 ` Avi Kivity
2008-12-01 15:49 ` Anthony Liguori
2008-12-01 14:44 ` Daniel P. Berrange
2008-12-01 14:53 ` Avi Kivity
2008-12-01 15:18 ` Anthony Liguori
2008-12-01 15:35 ` Avi Kivity
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