From: Amit Shah <amit.shah@redhat.com> To: "Dr. David Alan Gilbert" <dgilbert@redhat.com> Cc: rkagan@virtuozzo.com, linux-kernel@vger.kenel.org, ehabkost@redhat.com, kvm@vger.kernel.org, mst@redhat.com, simhan@hpe.com, Liang Li <liang.z.li@intel.com>, qemu-devel@nongnu.org, jitendra.kolhe@hpe.com, quintela@redhat.com, mohan_parthasarathy@hpe.com, pbonzini@redhat.com, rth@twiddle.net Subject: Re: [RFC Design Doc]Speed up live migration by skipping free pages Date: Fri, 1 Apr 2016 16:24:50 +0530 [thread overview] Message-ID: <20160401105450.GB21483@grmbl.mre> (raw) In-Reply-To: <20160322190530.GI2216@work-vm> On (Tue) 22 Mar 2016 [19:05:31], Dr. David Alan Gilbert wrote: > * Liang Li (liang.z.li@intel.com) wrote: > > b. Implement a new virtio device > > Implementing a brand new virtio device to exchange information > > between host and guest is another choice. It requires modifying the > > virtio spec too. > > If the right solution is to change the spec then we should do it; > we shouldn't use a technically worse solution just to avoid the spec > change; although we have to be even more careful to get the right > solution if we want to change the spec. Yes, absolutely. I didn't mean to suggest virtio-serial because it'll help us save with modifying specs. I suggested it because for me, the most important point was that if a guest is sensitive to latencies or spikes, the balloon driver is definitely going to be not installed by the guest admin. (I'm still not caught up on this thread, but wanted to clarify this right away.) Amit
WARNING: multiple messages have this Message-ID (diff)
From: Amit Shah <amit.shah@redhat.com> To: "Dr. David Alan Gilbert" <dgilbert@redhat.com> Cc: rkagan@virtuozzo.com, linux-kernel@vger.kenel.org, ehabkost@redhat.com, kvm@vger.kernel.org, mst@redhat.com, simhan@hpe.com, Liang Li <liang.z.li@intel.com>, qemu-devel@nongnu.org, jitendra.kolhe@hpe.com, quintela@redhat.com, mohan_parthasarathy@hpe.com, pbonzini@redhat.com, rth@twiddle.net Subject: Re: [Qemu-devel] [RFC Design Doc]Speed up live migration by skipping free pages Date: Fri, 1 Apr 2016 16:24:50 +0530 [thread overview] Message-ID: <20160401105450.GB21483@grmbl.mre> (raw) In-Reply-To: <20160322190530.GI2216@work-vm> On (Tue) 22 Mar 2016 [19:05:31], Dr. David Alan Gilbert wrote: > * Liang Li (liang.z.li@intel.com) wrote: > > b. Implement a new virtio device > > Implementing a brand new virtio device to exchange information > > between host and guest is another choice. It requires modifying the > > virtio spec too. > > If the right solution is to change the spec then we should do it; > we shouldn't use a technically worse solution just to avoid the spec > change; although we have to be even more careful to get the right > solution if we want to change the spec. Yes, absolutely. I didn't mean to suggest virtio-serial because it'll help us save with modifying specs. I suggested it because for me, the most important point was that if a guest is sensitive to latencies or spikes, the balloon driver is definitely going to be not installed by the guest admin. (I'm still not caught up on this thread, but wanted to clarify this right away.) Amit
next prev parent reply other threads:[~2016-04-01 10:54 UTC|newest] Thread overview: 112+ messages / expand[flat|nested] mbox.gz Atom feed top 2016-03-22 7:43 [RFC Design Doc]Speed up live migration by skipping free pages Liang Li 2016-03-22 7:43 ` [Qemu-devel] " Liang Li 2016-03-22 10:11 ` Michael S. Tsirkin 2016-03-22 10:11 ` [Qemu-devel] " Michael S. Tsirkin 2016-03-23 6:05 ` Li, Liang Z 2016-03-23 6:05 ` [Qemu-devel] " Li, Liang Z 2016-03-23 14:08 ` Michael S. Tsirkin 2016-03-23 14:08 ` [Qemu-devel] " Michael S. Tsirkin 2016-03-24 1:19 ` Li, Liang Z 2016-03-24 1:19 ` [Qemu-devel] " Li, Liang Z 2016-03-24 9:48 ` Michael S. Tsirkin 2016-03-24 9:48 ` [Qemu-devel] " Michael S. Tsirkin 2016-03-24 10:16 ` Li, Liang Z 2016-03-24 10:16 ` [Qemu-devel] " Li, Liang Z 2016-03-24 10:29 ` Michael S. Tsirkin 2016-03-24 10:29 ` [Qemu-devel] " Michael S. Tsirkin 2016-03-24 14:33 ` Li, Liang Z 2016-03-24 14:33 ` [Qemu-devel] " Li, Liang Z 2016-03-24 14:44 ` Michael S. Tsirkin 2016-03-24 14:44 ` [Qemu-devel] " Michael S. Tsirkin 2016-03-24 15:16 ` Li, Liang Z 2016-03-24 15:16 ` [Qemu-devel] " Li, Liang Z 2016-03-24 15:18 ` Paolo Bonzini 2016-03-24 15:18 ` [Qemu-devel] " Paolo Bonzini 2016-03-24 15:25 ` Li, Liang Z 2016-03-24 15:25 ` [Qemu-devel] " Li, Liang Z 2016-03-24 15:27 ` Michael S. Tsirkin 2016-03-24 15:27 ` [Qemu-devel] " Michael S. Tsirkin 2016-03-24 15:39 ` Li, Liang Z 2016-03-24 15:39 ` [Qemu-devel] " Li, Liang Z 2016-03-24 15:47 ` Paolo Bonzini 2016-03-24 15:47 ` [Qemu-devel] " Paolo Bonzini 2016-03-24 15:59 ` Li, Liang Z 2016-03-24 15:59 ` [Qemu-devel] " Li, Liang Z 2016-03-22 19:05 ` Dr. David Alan Gilbert 2016-03-22 19:05 ` [Qemu-devel] " Dr. David Alan Gilbert 2016-03-23 6:48 ` Li, Liang Z 2016-03-23 6:48 ` [Qemu-devel] " Li, Liang Z 2016-03-24 1:24 ` Wei Yang 2016-03-24 1:24 ` [Qemu-devel] " Wei Yang 2016-03-24 9:00 ` Dr. David Alan Gilbert 2016-03-24 9:00 ` [Qemu-devel] " Dr. David Alan Gilbert 2016-03-24 10:09 ` Li, Liang Z 2016-03-24 10:09 ` [Qemu-devel] " Li, Liang Z 2016-03-24 10:23 ` Dr. David Alan Gilbert 2016-03-24 10:23 ` [Qemu-devel] " Dr. David Alan Gilbert 2016-03-24 14:50 ` Li, Liang Z 2016-03-24 14:50 ` [Qemu-devel] " Li, Liang Z 2016-03-24 15:11 ` Michael S. Tsirkin 2016-03-24 15:11 ` [Qemu-devel] " Michael S. Tsirkin 2016-03-24 15:53 ` Li, Liang Z 2016-03-24 15:53 ` [Qemu-devel] " Li, Liang Z 2016-03-24 15:56 ` Michael S. Tsirkin 2016-03-24 15:56 ` [Qemu-devel] " Michael S. Tsirkin 2016-03-24 16:05 ` Li, Liang Z 2016-03-24 16:05 ` [Qemu-devel] " Li, Liang Z 2016-03-24 16:25 ` Michael S. Tsirkin 2016-03-24 16:25 ` [Qemu-devel] " Michael S. Tsirkin 2016-03-24 17:49 ` Dr. David Alan Gilbert 2016-03-24 17:49 ` [Qemu-devel] " Dr. David Alan Gilbert 2016-03-24 22:16 ` Michael S. Tsirkin 2016-03-24 22:16 ` [Qemu-devel] " Michael S. Tsirkin 2016-03-25 1:59 ` Li, Liang Z 2016-03-25 1:59 ` [Qemu-devel] " Li, Liang Z 2016-03-25 1:32 ` Li, Liang Z 2016-03-25 1:32 ` [Qemu-devel] " Li, Liang Z 2016-04-18 11:08 ` Li, Liang Z 2016-04-18 11:08 ` [Qemu-devel] " Li, Liang Z 2016-04-18 11:29 ` Michael S. Tsirkin 2016-04-18 11:29 ` [Qemu-devel] " Michael S. Tsirkin 2016-04-18 14:36 ` Li, Liang Z 2016-04-18 14:36 ` [Qemu-devel] " Li, Liang Z 2016-04-18 15:38 ` Michael S. Tsirkin 2016-04-18 15:38 ` [Qemu-devel] " Michael S. Tsirkin 2016-04-19 2:20 ` Li, Liang Z 2016-04-19 2:20 ` [Qemu-devel] " Li, Liang Z 2016-04-19 19:12 ` Dr. David Alan Gilbert 2016-04-19 19:12 ` [Qemu-devel] " Dr. David Alan Gilbert 2016-04-25 10:56 ` Michael S. Tsirkin 2016-04-25 10:56 ` [Qemu-devel] " Michael S. Tsirkin 2016-04-19 19:05 ` Dr. David Alan Gilbert 2016-04-19 19:05 ` [Qemu-devel] " Dr. David Alan Gilbert 2016-04-20 3:22 ` Li, Liang Z 2016-04-20 3:22 ` [Qemu-devel] " Li, Liang Z 2016-04-20 8:10 ` Dr. David Alan Gilbert 2016-04-20 8:10 ` [Qemu-devel] " Dr. David Alan Gilbert 2016-03-25 1:32 ` Li, Liang Z 2016-03-25 1:32 ` [Qemu-devel] " Li, Liang Z 2016-04-01 10:54 ` Amit Shah [this message] 2016-04-01 10:54 ` Amit Shah 2016-04-05 1:49 ` Li, Liang Z 2016-04-05 1:49 ` [Qemu-devel] " Li, Liang Z 2016-03-23 1:37 ` Wei Yang 2016-03-23 1:37 ` [Qemu-devel] " Wei Yang 2016-03-23 7:18 ` Li, Liang Z 2016-03-23 7:18 ` [Qemu-devel] " Li, Liang Z 2016-03-23 9:46 ` Wei Yang 2016-03-23 9:46 ` [Qemu-devel] " Wei Yang 2016-03-23 14:35 ` Li, Liang Z 2016-03-23 14:35 ` [Qemu-devel] " Li, Liang Z 2016-03-24 0:52 ` Wei Yang 2016-03-24 0:52 ` [Qemu-devel] " Wei Yang 2016-03-24 1:32 ` Li, Liang Z 2016-03-24 1:32 ` [Qemu-devel] " Li, Liang Z 2016-03-24 1:56 ` Wei Yang 2016-03-24 1:56 ` [Qemu-devel] " Wei Yang 2016-03-23 16:53 ` Eric Blake 2016-03-23 16:53 ` Eric Blake 2016-03-23 21:41 ` Wei Yang 2016-03-23 21:41 ` Wei Yang 2016-03-24 1:23 ` Li, Liang Z 2016-03-24 1:23 ` Li, Liang Z
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