From: Dario Faggioli <dario.faggioli@citrix.com>
To: konrad.wilk@oracle.com
Cc: artem.mygaiev@globallogic.com, msw@amazon.com,
Ian.Jackson@eu.citrix.com, dongxiao.xu@intel.com,
mengxu@cis.upenn.edu, JBeulich@suse.com, feng.wu@intel.com,
zhigang.x.wang@oracle.com, parth.dixit@linaro.org,
Paul.Skentzos@dornerworks.com, eddie.dong@intel.com,
rcojocaru@bitdefender.com, guijianfeng@cn.fujitsu.com,
Vijaya.Kumar@caviumnetworks.com, josh.whitehead@dornerworks.com,
zoltan.kiss@citrix.com, avanzini.arianna@gmail.com,
yang.z.zhang@intel.com, xen-devel@lists.xenproject.org,
serge.broslavsky@linaro.org, yjhyun.yoo@samsung.com,
olaf@aepfle.de, wency@cn.fujitsu.com, Ian.Campbell@citrix.com,
vijay.kilari@gmail.com, stefano.stabellini@eu.citrix.com,
mcgrof@suse.com, julien.grall@linaro.org, dave.scott@citrix.com,
robert.vanvossen@dornerworks.com, shantong.kang@intel.com,
roy.franz@linaro.org, anthony.perard@citrix.co.m,
Paul.Durrant@citrix.com, ufimtseva@gmail.com
Subject: Re: Xen 4.5 development update (July update)
Date: Mon, 28 Jul 2014 19:35:22 +0200 [thread overview]
Message-ID: <1406568922.4038.23.camel@Solace> (raw)
In-Reply-To: <20140723002823.3F7C4BD884@laptop.dumpdata.com>
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On mar, 2014-07-22 at 20:28 -0400, konrad.wilk@oracle.com wrote:
> == x86 ==
> * HT enabled, virtualization overhead is high (Xen 4.4) (none)
> kernbench demonstrated it
> looking and tracing it
> - Dario Faggioli
>
There is a (sub-)thread sill ongoing here:
http://www.gossamer-threads.com/lists/xen/devel/339409
However, there have been found counterexamples, i.e., numbers showing
that virt overhead is similar with and without HT, so I think this
bullet can go away (not sure with what tracking status...)
Dario
--
<<This happens because I choose it to happen!>> (Raistlin Majere)
-----------------------------------------------------------------
Dario Faggioli, Ph.D, http://about.me/dario.faggioli
Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)
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next prev parent reply other threads:[~2014-07-28 17:35 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-23 0:28 Xen 4.5 development update (July update) konrad.wilk
2014-07-23 0:47 ` Boris Ostrovsky
2014-07-23 16:09 ` Konrad Rzeszutek Wilk
2014-07-23 8:32 ` Andrew Cooper
2014-07-23 9:51 ` Ian Campbell
2014-07-23 10:20 ` Stefano Stabellini
2014-07-23 12:54 ` Don Slutz
2014-07-23 13:03 ` Stefano Stabellini
2014-07-23 18:34 ` Don Slutz
2014-07-24 11:21 ` Stefano Stabellini
2014-07-28 13:31 ` [PATCH 0/2] Back port Add new machine opt max-ram-below-4g Don Slutz
2014-07-28 13:31 ` [PATCH 1/2] xen-hvm: Fix xen_hvm_init() to adjust pc memory layout Don Slutz
2014-07-28 13:31 ` [PATCH 2/2] Backport pc & q35: Add new machine opt max-ram-below-4g Don Slutz
2014-07-28 16:12 ` [PATCH 0/2] Back port " Stefano Stabellini
2014-07-23 13:42 ` Xen 4.5 development update (July update) Fabio Fantoni
2014-07-23 13:45 ` Stefano Stabellini
2014-07-23 13:55 ` Fabio Fantoni
2014-07-23 17:02 ` Konrad Rzeszutek Wilk
2014-07-24 11:23 ` Stefano Stabellini
2014-07-25 17:22 ` Konrad Rzeszutek Wilk
2014-07-23 16:18 ` Konrad Rzeszutek Wilk
2014-07-23 16:43 ` Ian Campbell
2014-07-28 17:35 ` Dario Faggioli [this message]
2014-08-04 15:44 ` Konrad Rzeszutek Wilk
[not found] ` <1406569210.4038.28.camel@Solace>
[not found] ` <CAENZ-+=pABtLnOU1CE8nHYd48S0_pB4cggLz1zrqQq2V1pcA-w@mail.gmail.com>
2014-07-29 1:37 ` Meng Xu
-- strict thread matches above, loose matches on Subject: below --
2014-08-15 17:23 konrad.wilk
2014-08-15 17:58 ` Don Slutz
2014-08-15 19:40 ` Jan Beulich
2014-08-15 19:46 ` Konrad Rzeszutek Wilk
2014-08-15 21:19 ` Jan Beulich
2014-08-16 0:31 ` Meng Xu
2014-08-20 9:53 ` Dario Faggioli
2014-08-20 13:40 ` Meng Xu
2014-08-19 16:46 ` Dario Faggioli
2014-08-21 19:17 ` Konrad Rzeszutek Wilk
2014-09-02 20:45 konrad.wilk
2014-09-02 21:25 ` Andrew Cooper
2014-09-03 10:09 ` Ian Campbell
2014-09-03 10:13 ` Wei Liu
2014-09-03 11:27 ` Andrew Cooper
2014-09-03 11:53 ` Shriram Rajagopalan
2014-09-03 11:58 ` Andrew Cooper
2014-09-03 19:54 ` Julien Grall
2014-09-09 14:04 ` Konrad Rzeszutek Wilk
2014-09-03 1:17 ` Hongyang Yang
2014-09-03 12:05 ` Shriram Rajagopalan
2014-09-03 1:23 ` Mukesh Rathor
2014-09-03 12:54 ` Boris Ostrovsky
2014-09-03 15:47 ` Tamas K Lengyel
2014-09-03 15:53 ` Roy Franz
2014-09-09 9:53 ` Ian Campbell
2014-09-09 10:30 ` Jan Beulich
2014-09-09 14:09 ` Konrad Rzeszutek Wilk
2014-09-09 14:30 ` Jan Beulich
2014-09-09 15:48 ` Konrad Rzeszutek Wilk
2014-09-09 14:06 ` Konrad Rzeszutek Wilk
2014-09-09 13:51 ` Meng Xu
2014-09-09 17:02 ` Dario Faggioli
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