From: Wei Liu <wei.liu2@citrix.com>
To: Dongli Zhang <dongli.zhang@oracle.com>
Cc: tim@xen.org, sstabellini@kernel.org, wei.liu2@citrix.com,
George.Dunlap@eu.citrix.com, jinsong.liu@alibaba-inc.com,
dario.faggioli@citrix.com, ian.jackson@eu.citrix.com,
xen-devel@lists.xen.org, jbeulich@suse.com,
andrew.cooper3@citrix.com
Subject: Re: [PATCH v6 2/2] xen: move TLB-flush filtering out into populate_physmap during vm creation
Date: Tue, 20 Sep 2016 15:54:55 +0100 [thread overview]
Message-ID: <20160920145454.GZ30319@citrix.com> (raw)
In-Reply-To: <1474338664-5054-2-git-send-email-dongli.zhang@oracle.com>
On Tue, Sep 20, 2016 at 10:31:04AM +0800, Dongli Zhang wrote:
> This patch implemented parts of TODO left in commit id
> a902c12ee45fc9389eb8fe54eeddaf267a555c58 (More efficient TLB-flush
> filtering in alloc_heap_pages()). It moved TLB-flush filtering out into
> populate_physmap. Because of TLB-flush in alloc_heap_pages, it's very slow
> to create a guest with memory size of more than 100GB on host with 100+
> cpus.
>
Do you have some actual numbers on how much faster after applying this
patch?
This is mostly for writing release note etc, so it is fine if you don't
have numbers at hand.
Wei.
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next prev parent reply other threads:[~2016-09-20 14:54 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-20 2:31 [PATCH v6 1/2] xen: replace tlbflush check and operation with inline functions Dongli Zhang
2016-09-20 2:31 ` [PATCH v6 2/2] xen: move TLB-flush filtering out into populate_physmap during vm creation Dongli Zhang
2016-09-20 9:01 ` Jan Beulich
2016-09-20 11:20 ` George Dunlap
2016-09-20 12:14 ` Dario Faggioli
2016-09-20 14:54 ` Wei Liu [this message]
2016-09-20 8:56 ` [PATCH v6 1/2] xen: replace tlbflush check and operation with inline functions Jan Beulich
2016-09-20 11:19 ` George Dunlap
2016-09-20 12:14 ` Dario Faggioli
-- strict thread matches above, loose matches on Subject: below --
2016-09-21 1:39 [PATCH v6 2/2] xen: move TLB-flush filtering out into populate_physmap during vm creation Dongli Zhang
2016-09-21 11:23 ` Wei Liu
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