From mboxrd@z Thu Jan 1 00:00:00 1970 From: Takuya Yoshikawa Subject: Re: [Qemu-devel] [RFC PATCH 00/20] Kemari for KVM v0.1 Date: Thu, 22 Apr 2010 20:36:25 +0900 Message-ID: <4BD034B9.3070006@oss.ntt.co.jp> References: <1271829445-5328-1-git-send-email-tamura.yoshiaki@lab.ntt.co.jp> <4BD00FBA.5040604@redhat.com> <4BD02684.8060202@lab.ntt.co.jp> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: dlaor@redhat.com, kvm@vger.kernel.org, qemu-devel@nongnu.org, avi@redhat.com, aliguori@us.ibm.com, mtosatti@redhat.com, ohmura.kei@lab.ntt.co.jp To: Yoshiaki Tamura Return-path: Received: from serv2.oss.ntt.co.jp ([222.151.198.100]:38107 "EHLO serv2.oss.ntt.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753407Ab0DVLcv (ORCPT ); Thu, 22 Apr 2010 07:32:51 -0400 In-Reply-To: <4BD02684.8060202@lab.ntt.co.jp> Sender: kvm-owner@vger.kernel.org List-ID: (2010/04/22 19:35), Yoshiaki Tamura wrote: > >> A trivial one would we to : >> - do X online snapshots/sec > > I currently don't have good numbers that I can share right now. > Snapshots/sec depends on what kind of workload is running, and if the > guest was almost idle, there will be no snapshots in 5sec. On the other > hand, if the guest was running I/O intensive workloads (netperf, iozone > for example), there will be about 50 snapshots/sec. > 50 is too small: this depends on the synchronization speed and does not show how many snapshots we need, right?