From mboxrd@z Thu Jan 1 00:00:00 1970 From: Takuya Yoshikawa Subject: Re: [PATCH RFC v2 5/6] KVM: moving dirty bitmaps to user space Date: Fri, 23 Apr 2010 20:14:54 +0900 Message-ID: <4BD1812E.6030707@oss.ntt.co.jp> References: <20100420195349.dab60b1d.yoshikawa.takuya@oss.ntt.co.jp> <20100420200225.efca602f.yoshikawa.takuya@oss.ntt.co.jp> <4BCEE0E4.6060707@redhat.com> <4BD011E8.6020502@oss.ntt.co.jp> <4BD17665.5090101@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: mtosatti-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, kvm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, kvm-ia64-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, kvm-ppc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, fernando-gVGce1chcLdL9jVzuh4AOg@public.gmane.org, Yoshiaki Tamura To: Avi Kivity Return-path: In-Reply-To: <4BD17665.5090101-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> Sender: kvm-ppc-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: kvm.vger.kernel.org (2010/04/23 19:28), Avi Kivity wrote: >> >> OK, I will do in the next version. In this RFC, I would be happy if I can >> know the overall design is right or not. >> > > Everything looks reasonable to me. > Thank you! > Do you have performance numbers? I'm interested in both measurements of > KVM_SWITCH_DIRTY_LOG under various conditions and macro benchmarks (for > example, total guest throughput improvement under Kemari). > Currently, I'm just checking the performance visually. - on laptops, we can feel the speed directly: my favorite is installing ubuntu or debian by alternate installers - live migration with heavy work load Now that I've got the overall design, I want to measure the performance by numbers. About performance under Kemari: we(oss.ntt.co.jp staffs: me and Fernando) are now concentrating on improving the basic live-migration infrastructures and they(lab.ntt.co.jp staffs) are working hard for building Kemari itself. - We are also interested in using live-migration with HA software and this needs light, stable live-migration: same as Kemari! So measuring Kemari's performance with our patch-set will need some more time, ** How about Tamura-san? ** So at this stage, I'll show you performance improvement(I hope to improve) by another test cases. If possible next week! Thanks, Takuya