From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nikola Ciprich Subject: Re: KVM got slow after adding more physical memory to host Date: Tue, 6 Sep 2011 18:30:29 +0200 Message-ID: <20110906163029.GC2152@nik-comp.lan> References: <20110906140201.GF18218@pcnci.linuxbox.cz> <4E663897.60901@redhat.com> <20110906153801.GA2152@nik-comp.lan> <4E664036.20308@redhat.com> <20110906160113.GB2152@nik-comp.lan> <4E66450A.8070302@redhat.com> <20110906161045.GL26451@redhat.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="/Uq4LBwYP4y1W6pO" Cc: Avi Kivity , kvm@vger.kernel.org To: Gleb Natapov Return-path: Received: from gwu.lbox.cz ([62.245.111.132]:42888 "EHLO gwu.lbox.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751673Ab1IFQah (ORCPT ); Tue, 6 Sep 2011 12:30:37 -0400 Content-Disposition: inline In-Reply-To: <20110906161045.GL26451@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: --/Uq4LBwYP4y1W6pO Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable OK, seems like Avi's right, at least the windows guest is not using DMA though the question is, why did it got disabled and how can I reenable it, I'm not experienced that much with XP :( > It is rep/in-out. But why it became noticeable only after adding more > physical memory to the host is a mystery. now that I'm thinking about it, we had similar problem in the past, the win= dows guest was unusably slow, and the whole host was slow as well... upgrading to 0.14= =2E1 seemingly solved this issue, but maybe the DMA just got randomly enabled, and now aft= er adding the memory (and restarting of course), it just got disabled again? but why could this be?? >=20 > -- > Gleb. >=20 --=20 ------------------------------------- Ing. Nikola CIPRICH LinuxBox.cz, s.r.o. 28. rijna 168, 709 01 Ostrava tel.: +420 596 603 142 fax: +420 596 621 273 mobil: +420 777 093 799 www.linuxbox.cz mobil servis: +420 737 238 656 email servis: servis@linuxbox.cz ------------------------------------- --/Uq4LBwYP4y1W6pO Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iEYEARECAAYFAk5mSqUACgkQ3xdJJrLygV5tmACfblmbSgxGcSST+TRFdLCyBBN8 8DIAniSkFeRlXJxr9XH7NzcyFWR/bRwV =7TiT -----END PGP SIGNATURE----- --/Uq4LBwYP4y1W6pO--