From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1M8Jk4-0002xe-Rg for qemu-devel@nongnu.org; Sun, 24 May 2009 15:52:20 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1M8Jjx-0002we-S1 for qemu-devel@nongnu.org; Sun, 24 May 2009 15:52:18 -0400 Received: from [199.232.76.173] (port=35012 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1M8Jjx-0002wb-J0 for qemu-devel@nongnu.org; Sun, 24 May 2009 15:52:13 -0400 Received: from mx2.redhat.com ([66.187.237.31]:57498) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1M8Jjx-0003Tb-2h for qemu-devel@nongnu.org; Sun, 24 May 2009 15:52:13 -0400 Message-ID: <4A19A56D.2020303@redhat.com> Date: Sun, 24 May 2009 22:52:13 +0300 From: Avi Kivity MIME-Version: 1.0 Subject: Re: [Qemu-devel] [PATCH 2/2] set migration max downtime References: <1242946174-30451-1-git-send-email-glommer@redhat.com> <1242946174-30451-2-git-send-email-glommer@redhat.com> <1242946174-30451-3-git-send-email-glommer@redhat.com> <4A160950.8020906@codemonkey.ws> <4A192A67.8050801@redhat.com> <4A19A46E.1070308@us.ibm.com> In-Reply-To: <4A19A46E.1070308@us.ibm.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Anthony Liguori Cc: Glauber Costa , qemu-devel@nongnu.org Anthony Liguori wrote: >> I prefer seconds (and bytes). > > As a floating point value? Yes. More than enough spacecraft have been lost due to errors in unit=20 conversion. > > I would think the typical down time would be in the ms-us range so=20 > we're talking 0.030 - 0.000030 if we express in seconds. Just like we support suffixes for memory, we could support them for=20 time. So your range would be 30ms - 30us (committing another crime=20 writing =B5s as us). --=20 I have a truly marvellous patch that fixes the bug which this signature is too narrow to contain.