From mboxrd@z Thu Jan 1 00:00:00 1970 From: Harald Dunkel Subject: how to tweak kernel to get the best out of kvm? Date: Fri, 05 Mar 2010 16:20:54 +0100 Message-ID: <4B912156.5020707@darkharri.de> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit To: KVM Mailing List Return-path: Received: from outgoing.selfhost.de ([82.98.87.70]:60496 "EHLO outgoing.selfhost.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753311Ab0CEP1i (ORCPT ); Fri, 5 Mar 2010 10:27:38 -0500 Received: from [10.42.100.3] (harri@pluto.darkharri.de [10.42.100.3]) by mailhost.darkharri.de (8.14.3/8.14.3) with ESMTP id o25FKsc4006557 for ; Fri, 5 Mar 2010 16:20:54 +0100 (CET) Sender: kvm-owner@vger.kernel.org List-ID: -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi folks, Problem: My kvm server (8 cores, 64 GByte RAM, amd64) can eat up all block device or file system performance, so that the kvm clients become almost unresponsive. This is _very_ bad. I would like to make sure that the kvm clients do not affect each other, and that all (including the server itself) get a fair part of computing power and memory space. What config options would you suggest to build and run a Linux kernel optimized for running kvm clients? Sorry for asking, but AFAICS some general guidelines for kvm are missing here. Of course I saw a lot of options in Documentation/\ kernel-parameters.txt, but unfortunately I am not a kernel hacker. Any helpful comment would be highly appreciated. Regards Harri -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkuRIVYACgkQUTlbRTxpHjebXQCdHSKXYPfkwzSeyawrumELfVPu MbYAn07JoomtdVkA6YES4EgKayn6KSH6 =2mVb -----END PGP SIGNATURE-----