Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751500Ab1F3M7u (ORCPT ); Thu, 30 Jun 2011 08:59:50 -0400 Received: from mail-iw0-f174.google.com ([209.85.214.174]:61433 "EHLO mail-iw0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750708Ab1F3M7n (ORCPT ); Thu, 30 Jun 2011 08:59:43 -0400 Date: Thu, 30 Jun 2011 08:59:38 -0400 From: Eric B Munson To: Avi Kivity Cc: Glauber Costa , kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Rik van Riel , Jeremy Fitzhardinge , Peter Zijlstra , Anthony Liguori Subject: Re: [PATCH v3 2/9] KVM-HDR Add constant to represent KVM MSRs enabled bit Message-ID: <20110630125938.GA4823@mgebm.net> References: <1309361388-30163-1-git-send-email-glommer@redhat.com> <1309361388-30163-3-git-send-email-glommer@redhat.com> <20110629215608.GA3557@mgebm.net> <4E0C3458.6090801@redhat.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="h31gzZEtNLTqOjlF" Content-Disposition: inline In-Reply-To: <4E0C3458.6090801@redhat.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1804 Lines: 51 --h31gzZEtNLTqOjlF Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, 30 Jun 2011, Avi Kivity wrote: > On 06/30/2011 12:56 AM, Eric B Munson wrote: > >My mail provider seems to have dropped patch 1 of the series so I can't = reply > >directly to it, please add my Tested-by there as well. >=20 > How did you test it then? >=20 I built host and guest kernels with the patches and pinned a while(1) and t= he CPU thread from qemu to CPU 2 on the host. I then started the same while(1) process in guest and verified that I see ~50% steal time reported. I then built 2.6.39 (just the code I had present) on the guest and time it while it was competing with the while(1) on the host for CPU time. Next I built the guest kernel with STEAL_TIME=3DN and reran the kernel compile to = make sure that there weren't any huge variations in performace. Eric --h31gzZEtNLTqOjlF Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQEcBAEBAgAGBQJODHM6AAoJEH65iIruGRnNWwUIAIw7yDzzyEPA9nMpWgkFgqDU nMpsPjD7hh3/M6Sx589c59WfQYa2G+opksUhwB9chL/PWUA3XRlLG4X/TkfUBnoe S5gzZbGxnxdeUTYRVTeDegWaxPtosz2n6bbe1xRWAPvgZJ2/r9mlDYEGmZ/Id2+2 ymWj2ZdkdaNuQms2n4KfADdvY0vJDrPkwIIgEMTpXaOLEsYFKQdNuUn9e9OnE1qD vEGn1dwfg0/qspEnjspqYFjpMEAdkXPfCAYYEFKMpgY72CEScBKdC+EN2pO3X9m5 qwrCKJEAMBCos1GgL9totC0TH5PhtWorFQsdadkBP+T+LymNIztqoaPIesgY7no= =OFsZ -----END PGP SIGNATURE----- --h31gzZEtNLTqOjlF-- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/