From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dario Faggioli Subject: Re: Xen 4.2.2 / KVM / VirtualBox benchmark on Haswell Date: Thu, 11 Jul 2013 18:27:42 +0200 Message-ID: <1373560062.12772.48.camel@Solace> References: <51DC2BE3.7000009@xen.org> <1373540028.12772.31.camel@Solace> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============5785248652651338093==" Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: George Dunlap Cc: Gordan Bobic , Lars Kurth , "xen-devel@lists.xen.org" List-Id: xen-devel@lists.xenproject.org --===============5785248652651338093== Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-tAwc46vNnlaOvKOcjxnt" --=-tAwc46vNnlaOvKOcjxnt Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On gio, 2013-07-11 at 17:23 +0100, George Dunlap wrote: > On Thu, Jul 11, 2013 at 11:53 AM, Dario Faggioli > > When I tried to use kernel compile as a benchmark for the NUMA effects, > > it did not turn out that useful to me (and that's why I switched to > > SpecJBB), but perhaps it was me that was doing something wrong... >=20 > In my experience, kernel-build has excellent memory locality. One > effect is that the effect of nested paging on TLB time is almostt nil; > I'm not surprised that the caches make the effect of NUMA almost nil > as well. >=20 Not to mention I/O, unless you setup a ramfs backed building environment. Again, when I tried, that was my intention, but perhaps I failed right at that... Gordan, what about you? Dario --=20 <> (Raistlin Majere) ----------------------------------------------------------------- Dario Faggioli, Ph.D, http://about.me/dario.faggioli Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK) --=-tAwc46vNnlaOvKOcjxnt 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 v1.4.13 (GNU/Linux) iEYEABECAAYFAlHe3P4ACgkQk4XaBE3IOsS+wQCfYAANUYKg9XFizqjDNeeMvbMd GQQAniAPvhu9V09wkfuskHwEa1Uif8By =EBC9 -----END PGP SIGNATURE----- --=-tAwc46vNnlaOvKOcjxnt-- --===============5785248652651338093== 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 --===============5785248652651338093==--