From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hansa Subject: Re: KVM slow LAMP guest Date: Sun, 23 Aug 2015 21:18:55 +0200 Message-ID: <55DA1C9F.5090502@logic-q.nl> References: <5582805F.8090703@logic-q.nl> <55A4C2AA.9000307@logic-q.nl> <55A4C454.2070704@intercollect.com> <55A568F1.20504@intercollect.com> <55A57C21.6080502@redhat.com> <55A6BC4E.7060203@intercollect.com> <55A79522.5050805@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE To: kvm list Return-path: Received: from smtp.logic-q.nl ([213.207.85.242]:37665 "EHLO smtp.logic-q.nl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753235AbbHWTZw (ORCPT ); Sun, 23 Aug 2015 15:25:52 -0400 Received: from localhost (localhost [127.0.0.1]) by smtp.logic-q.nl (Postfix) with ESMTP id 62210A3C90 for ; Sun, 23 Aug 2015 21:19:01 +0200 (CEST) Received: from smtp.logic-q.nl ([127.0.0.1]) by localhost (smtp.logic-q.nl [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id BFbyUu-QdwvK for ; Sun, 23 Aug 2015 21:18:57 +0200 (CEST) Received: from [192.168.1.121] (unknown [185.23.142.226]) (Authenticated sender: c.brocker@logic-q.nl) by smtp.logic-q.nl (Postfix) with ESMTPSA id CBD00A0C94 for ; Sun, 23 Aug 2015 21:18:56 +0200 (CEST) In-Reply-To: <55A79522.5050805@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: On 16-7-2015 13:27, Paolo Bonzini wrote: > On 15/07/2015 22:02, "C. Br=C3=B6cker" wrote: >>> What OS is this? Is it RHEL/CentOS? If so, halt_poll_ns will be i= n 6.7 >>> which will be out in a few days/weeks. >>> >>> Paolo >> OK. As said CentOS 6.6. >> But where do I put this parameter? > You can add "kvm.halt_poll_ns=3D500000" to the kernel command line. = If > you have the parameter, you have the > /sys/module/kvm/parameters/halt_poll_ns file. Hi, I upgraded to the CentOS 6.7 release which came out last month and as p= romised the halt_poll_ns parameter was available. Last week I tested the availability status every 5 minutes on my Wordpr= ess VM's with the halt_poll_ns kernel param set on DOM0. I'm pleased to= announce that it solves the problem! My guess is that a lot people out there have the same problem but do no= t know the solution. Why not put it in the kernel by default? Thanks a lot for all the help! - Hansa