From: Wei Wang <wei.w.wang@intel.com>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: virtio-dev@lists.oasis-open.org, linux-kernel@vger.kernel.org,
virtualization@lists.linux-foundation.org, kvm@vger.kernel.org,
linux-mm@kvack.org, mhocko@kernel.org, akpm@linux-foundation.org,
pbonzini@redhat.com, liliang.opensource@gmail.com,
yang.zhang.wz@gmail.com, quan.xu0@gmail.com, nilal@redhat.com,
riel@redhat.com, huangzhichao@huawei.com, dgilbert@redhat.com
Subject: Re: [PATCH v28 0/4] Virtio-balloon: support free page reporting
Date: Fri, 09 Feb 2018 11:11:39 +0800 [thread overview]
Message-ID: <5A7D116B.9070502@intel.com> (raw)
In-Reply-To: <20180208215048-mutt-send-email-mst@kernel.org>
On 02/09/2018 03:55 AM, Michael S. Tsirkin wrote:
> On Thu, Feb 08, 2018 at 05:50:16PM +0800, Wei Wang wrote:
>
>> Details:
>> Set up a Ping-Pong local live migration, where the guest ceaselessy
>> migrates between the source and destination. Linux compilation,
>> i.e. make bzImage -j4, is performed during the Ping-Pong migration. The
>> legacy case takes 5min14s to finish the compilation. With this
>> optimization patched, it takes 5min12s.
> How is migration time affected in this case?
When the linux compilation workload runs, the migration time (both the
legacy and this optimization case) varies as the compilation goes on. It
seems not easy to give a static speedup number, some times the migration
time is reduced to 33%, sometimes to 50%, it varies, and depends on how
much free memory the system has at that moment. For example, at the
later stage of the compilation, I can observe 5GB memory being used as
page cache. But overall, I can observe obvious improvement of the
migration time.
Best,
Wei
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2018-02-09 3:09 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-08 9:50 Wei Wang
2018-02-08 9:50 ` [PATCH v28 1/4] mm: support reporting free page blocks Wei Wang
2018-02-08 9:50 ` [PATCH v28 2/4] virtio-balloon: VIRTIO_BALLOON_F_FREE_PAGE_HINT Wei Wang
2018-02-08 9:50 ` [PATCH v28 3/4] mm/page_poison: add a function to expose page poison val to kernel modules Wei Wang
2018-02-08 19:29 ` Michael S. Tsirkin
2018-02-08 9:50 ` [PATCH v28 4/4] virtio-balloon: VIRTIO_BALLOON_F_PAGE_POISON Wei Wang
2018-02-08 19:25 ` Michael S. Tsirkin
2018-02-08 19:31 ` Michael S. Tsirkin
2018-02-08 19:55 ` [PATCH v28 0/4] Virtio-balloon: support free page reporting Michael S. Tsirkin
2018-02-09 3:11 ` Wei Wang [this message]
2018-02-09 3:14 ` Michael S. Tsirkin
2018-02-26 4:01 ` Wei Wang
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=5A7D116B.9070502@intel.com \
--to=wei.w.wang@intel.com \
--cc=akpm@linux-foundation.org \
--cc=dgilbert@redhat.com \
--cc=huangzhichao@huawei.com \
--cc=kvm@vger.kernel.org \
--cc=liliang.opensource@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mhocko@kernel.org \
--cc=mst@redhat.com \
--cc=nilal@redhat.com \
--cc=pbonzini@redhat.com \
--cc=quan.xu0@gmail.com \
--cc=riel@redhat.com \
--cc=virtio-dev@lists.oasis-open.org \
--cc=virtualization@lists.linux-foundation.org \
--cc=yang.zhang.wz@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox