From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: [Qemu-devel] Re: [RFC: 0/2] patch for QEMU HPET periodic timer emulation to alleviate time drift Date: Mon, 07 Feb 2011 15:34:47 +0200 Message-ID: <4D4FF4F7.401@redhat.com> References: <480481933.225059.1296734409954.JavaMail.root@zmail07.collab.prod.int.phx2.redhat.com> <1375835067.226263.1296740625327.JavaMail.root@zmail07.collab.prod.int.phx2.redhat.com> <4D4AC99A.2070803@siemens.com> <4D4B0B07.2040904@codemonkey.ws> <4D4B1CF8.8040800@web.de> <4D4B5F23.7040801@codemonkey.ws> <4D4BBF55.9060000@web.de> <4D4FE6BF.5080502@redhat.com> <4D4FEF81.1040603@codemonkey.ws> <4D4FF02F.2030309@redhat.com> <4D4FF24A.7000004@codemonkey.ws> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: Jan Kiszka , qemu-devel , Glauber Costa , Ulrich Obergfell , kvm To: Anthony Liguori Return-path: Received: from mx1.redhat.com ([209.132.183.28]:37211 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752527Ab1BGNex (ORCPT ); Mon, 7 Feb 2011 08:34:53 -0500 In-Reply-To: <4D4FF24A.7000004@codemonkey.ws> Sender: kvm-owner@vger.kernel.org List-ID: On 02/07/2011 03:23 PM, Anthony Liguori wrote: >> If it doesn't solve the majority of the problems it isn't very useful >> IMO. It's a good first step, but not sufficient for real world use >> with overcommit. > > > Even if we have a way to detect coalescing, we still need to make sure > we don't lose ticks in QEMU. So regardless of whether it solves the > majority of problems, we need this anyway. Ok, agreed. -- error compiling committee.c: too many arguments to function From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from [140.186.70.92] (port=55311 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1PmRF4-0007eq-EZ for qemu-devel@nongnu.org; Mon, 07 Feb 2011 08:35:00 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1PmREz-0001W7-AP for qemu-devel@nongnu.org; Mon, 07 Feb 2011 08:34:54 -0500 Received: from mx1.redhat.com ([209.132.183.28]:51835) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1PmREz-0001VR-0v for qemu-devel@nongnu.org; Mon, 07 Feb 2011 08:34:53 -0500 Message-ID: <4D4FF4F7.401@redhat.com> Date: Mon, 07 Feb 2011 15:34:47 +0200 From: Avi Kivity MIME-Version: 1.0 Subject: Re: [Qemu-devel] Re: [RFC: 0/2] patch for QEMU HPET periodic timer emulation to alleviate time drift References: <480481933.225059.1296734409954.JavaMail.root@zmail07.collab.prod.int.phx2.redhat.com> <1375835067.226263.1296740625327.JavaMail.root@zmail07.collab.prod.int.phx2.redhat.com> <4D4AC99A.2070803@siemens.com> <4D4B0B07.2040904@codemonkey.ws> <4D4B1CF8.8040800@web.de> <4D4B5F23.7040801@codemonkey.ws> <4D4BBF55.9060000@web.de> <4D4FE6BF.5080502@redhat.com> <4D4FEF81.1040603@codemonkey.ws> <4D4FF02F.2030309@redhat.com> <4D4FF24A.7000004@codemonkey.ws> In-Reply-To: <4D4FF24A.7000004@codemonkey.ws> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Anthony Liguori Cc: Glauber Costa , Jan Kiszka , qemu-devel , kvm , Ulrich Obergfell On 02/07/2011 03:23 PM, Anthony Liguori wrote: >> If it doesn't solve the majority of the problems it isn't very useful >> IMO. It's a good first step, but not sufficient for real world use >> with overcommit. > > > Even if we have a way to detect coalescing, we still need to make sure > we don't lose ticks in QEMU. So regardless of whether it solves the > majority of problems, we need this anyway. Ok, agreed. -- error compiling committee.c: too many arguments to function