From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dario Faggioli Subject: Re: Xen 4.5 development update (July update) Date: Mon, 28 Jul 2014 19:35:22 +0200 Message-ID: <1406568922.4038.23.camel@Solace> References: <20140723002823.3F7C4BD884@laptop.dumpdata.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============2334723861701902277==" Return-path: Received: from mail6.bemta4.messagelabs.com ([85.158.143.247]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1XBopu-0007dB-QU for xen-devel@lists.xenproject.org; Mon, 28 Jul 2014 17:35:46 +0000 In-Reply-To: <20140723002823.3F7C4BD884@laptop.dumpdata.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org 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 List-Id: xen-devel@lists.xenproject.org --===============2334723861701902277== Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-34Et2cKTXhrvjOvY2cOP" --=-34Et2cKTXhrvjOvY2cOP Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On mar, 2014-07-22 at 20:28 -0400, konrad.wilk@oracle.com wrote: > =3D=3D x86 =3D=3D=20 > * HT enabled, virtualization overhead is high (Xen 4.4) (none) > kernbench demonstrated it > looking and tracing it > - Dario Faggioli >=20 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 --=20 <> (Raistlin Majere) ----------------------------------------------------------------- Dario Faggioli, Ph.D, http://about.me/dario.faggioli Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK) --=-34Et2cKTXhrvjOvY2cOP Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iEYEABECAAYFAlPWidoACgkQk4XaBE3IOsT0LgCeI9i4LC0W0UOe5LOxv+jfoeQb yDsAn32p+4MQBQMbjoTM7PvCehvYlY0w =IWpz -----END PGP SIGNATURE----- --=-34Et2cKTXhrvjOvY2cOP-- --===============2334723861701902277== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel --===============2334723861701902277==--