From: Avi Kivity <avi@redhat.com>
To: Skywing <Skywing@valhallalegends.com>
Cc: Andi Kleen <andi@firstfloor.org>,
Andre Przywara <andre.przywara@amd.com>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>
Subject: Re: [PATCH 0/3] KVM-userspace: add NUMA support for guests
Date: Sun, 30 Nov 2008 22:08:23 +0200 [thread overview]
Message-ID: <4932F2B7.8020500@redhat.com> (raw)
In-Reply-To: <982D8D05B6407A49AD506E6C3AC8E7D6BEF93691A7@caralain.haven.nynaeve.net>
Skywing wrote:
>> The far majority of pages are allocated when a process wants them
>> or the kernel uses them for file cache.
>>
>
> Is that not going to be fairly guest-specific? For example, Windows has a thread that does background zeroing of unallocated pages that aren't marked as zeroed already. I'd imagine that touching such pages would translate to an "allocation" as far as any hypervisor would be concerned.
>
Yes. Most likely the thread runs on the same node as the memory, so it
stays local.
Still, we need to keep the vcpu within the memory node somehow,
otherwise all memory becomes non-local.
--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.
next prev parent reply other threads:[~2008-11-30 20:08 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 [this message]
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
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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