From: Rik van Riel <riel@redhat.com>
To: Roman Kagan <rkagan@virtuozzo.com>,
"Michael S. Tsirkin" <mst@redhat.com>
Cc: "ehabkost@redhat.com" <ehabkost@redhat.com>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"quintela@redhat.com" <quintela@redhat.com>,
"qemu-devel@nongnu.org" <qemu-devel@nongnu.org>,
"Li, Liang Z" <liang.z.li@intel.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"Dr. David Alan Gilbert" <dgilbert@redhat.com>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
"amit.shah@redhat.com" <amit.shah@redhat.com>,
"pbonzini@redhat.com" <pbonzini@redhat.com>,
"akpm@linux-foundation.org" <akpm@linux-foundation.org>,
"virtualization@lists.linux-foundation.org"
<virtualization@lists.linux-foundation.org>,
"rth@twiddle.net" <rth@twiddle.net>
Subject: Re: [Qemu-devel] [RFC qemu 0/4] A PV solution for live migration optimization
Date: Wed, 09 Mar 2016 14:38:52 -0500 [thread overview]
Message-ID: <1457552332.17933.24.camel@redhat.com> (raw)
In-Reply-To: <20160309170438.GB9715@rkaganb.sw.ru>
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On Wed, 2016-03-09 at 20:04 +0300, Roman Kagan wrote:
> On Wed, Mar 09, 2016 at 05:41:39PM +0200, Michael S. Tsirkin wrote:
> > On Wed, Mar 09, 2016 at 05:28:54PM +0300, Roman Kagan wrote:
> > > For (1) I've been trying to make a point that skipping clean
> > > pages is
> > > much more likely to result in noticable benefit than free pages
> > > only.
> >
> > I guess when you say clean you mean zero?
>
> No I meant clean, i.e. those that could be evicted from RAM without
> causing I/O.
>
Programs in the guest may have that memory mmapped.
This could include things like libraries and executables.
How do you deal with the guest page cache containing
references to now non-existent memory?
How do you re-populate the memory on the destination
host?
--
All rights reversed
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next prev parent reply other threads:[~2016-03-09 19:39 UTC|newest]
Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-03 10:44 [Qemu-devel] [RFC qemu 0/4] A PV solution for live migration optimization Liang Li
2016-03-03 10:44 ` [Qemu-devel] [RFC qemu 1/4] pc: Add code to get the lowmem form PCMachineState Liang Li
2016-03-03 10:44 ` [Qemu-devel] [RFC qemu 2/4] virtio-balloon: Add a new feature to balloon device Liang Li
2016-03-03 12:23 ` Cornelia Huck
2016-03-04 2:38 ` Li, Liang Z
2016-03-03 12:56 ` Michael S. Tsirkin
2016-03-04 2:29 ` Li, Liang Z
2016-03-03 10:44 ` [Qemu-devel] [RFC qemu 3/4] migration: not set migration bitmap in setup stage Liang Li
2016-03-03 10:44 ` [Qemu-devel] [RFC qemu 4/4] migration: filter out guest's free pages in ram bulk stage Liang Li
2016-03-03 12:16 ` Cornelia Huck
2016-03-04 2:32 ` Li, Liang Z
2016-03-03 12:45 ` Daniel P. Berrange
2016-03-04 2:43 ` Li, Liang Z
2016-03-03 13:58 ` [Qemu-devel] [RFC qemu 0/4] A PV solution for live migration optimization Roman Kagan
2016-03-04 1:35 ` Li, Liang Z
2016-03-03 17:46 ` Dr. David Alan Gilbert
2016-03-04 1:52 ` Li, Liang Z
2016-03-04 8:14 ` Roman Kagan
2016-03-04 9:08 ` Li, Liang Z
2016-03-04 10:23 ` Roman Kagan
2016-03-04 14:26 ` Li, Liang Z
2016-03-04 14:45 ` Michael S. Tsirkin
2016-03-04 15:49 ` Li, Liang Z
2016-03-05 19:55 ` Michael S. Tsirkin
2016-03-07 6:49 ` Li, Liang Z
2016-03-07 11:40 ` Michael S. Tsirkin
2016-03-07 15:06 ` Li, Liang Z
2016-03-09 14:28 ` Roman Kagan
2016-03-09 15:27 ` Li, Liang Z
2016-03-09 15:30 ` Michael S. Tsirkin
2016-03-10 1:41 ` Li, Liang Z
2016-03-10 12:29 ` Michael S. Tsirkin
2016-03-09 15:41 ` Michael S. Tsirkin
2016-03-09 17:04 ` Roman Kagan
2016-03-09 17:39 ` Michael S. Tsirkin
2016-03-10 10:21 ` Roman Kagan
2016-03-09 19:38 ` Rik van Riel [this message]
2016-03-10 9:30 ` Roman Kagan
2016-03-04 16:24 ` Paolo Bonzini
2016-03-04 18:51 ` Dr. David Alan Gilbert
2016-03-07 5:34 ` Li, Liang Z
2016-03-09 13:22 ` Roman Kagan
2016-03-09 14:19 ` Li, Liang Z
2016-03-09 6:18 ` Li, Liang Z
2016-03-04 7:55 ` Roman Kagan
2016-03-04 8:23 ` Li, Liang Z
2016-03-04 8:35 ` Roman Kagan
2016-03-04 9:08 ` Dr. David Alan Gilbert
2016-03-04 9:12 ` Li, Liang Z
2016-03-04 9:47 ` Michael S. Tsirkin
2016-03-04 10:11 ` Li, Liang Z
2016-03-04 10:36 ` Michael S. Tsirkin
2016-03-04 15:13 ` Li, Liang Z
2016-03-08 14:03 ` Michael S. Tsirkin
2016-03-08 14:17 ` Li, Liang Z
2016-03-04 9:35 ` Roman Kagan
2016-03-08 11:13 ` Amit Shah
2016-03-08 13:11 ` Li, Liang Z
2016-03-10 7:44 ` Li, Liang Z
2016-03-10 7:57 ` Amit Shah
2016-03-10 8:36 ` Li, Liang Z
2016-03-10 11:18 ` Dr. David Alan Gilbert
2016-03-11 2:38 ` Li, Liang Z
2016-03-14 17:03 ` Dr. David Alan Gilbert
2016-03-15 3:31 ` Li, Liang Z
2016-03-15 10:29 ` Michael S. Tsirkin
2016-03-15 11:11 ` Li, Liang Z
2016-03-15 19:55 ` Dr. David Alan Gilbert
2016-03-16 1:20 ` Li, Liang Z
-- strict thread matches above, loose matches on Subject: below --
2016-03-04 9:32 Jitendra Kolhe
2016-03-04 9:36 ` Li, Liang Z
2016-03-08 11:14 ` Amit Shah
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