Re: [PATCH RFC 14/15] migration: Postcopy preemption on separate channel

2022-02-08 Thread Peter Xu
On Tue, Feb 08, 2022 at 01:23:29PM +, Dr. David Alan Gilbert wrote: > * Peter Xu (pet...@redhat.com) wrote: > > On Tue, Feb 08, 2022 at 11:24:14AM +, Dr. David Alan Gilbert wrote: > > > > The current model is we only have 1 postcopy channel and 1 precopy > > > > channel, but > > > > it sho

Re: [PATCH RFC 14/15] migration: Postcopy preemption on separate channel

2022-02-08 Thread Dr. David Alan Gilbert
* Peter Xu (pet...@redhat.com) wrote: > On Tue, Feb 08, 2022 at 11:24:14AM +, Dr. David Alan Gilbert wrote: > > > The current model is we only have 1 postcopy channel and 1 precopy > > > channel, but > > > it should be easier if we want to make it N post + 1 pre base on this > > > series. > >

Re: [PATCH RFC 14/15] migration: Postcopy preemption on separate channel

2022-02-08 Thread Peter Xu
On Tue, Feb 08, 2022 at 11:24:14AM +, Dr. David Alan Gilbert wrote: > > The current model is we only have 1 postcopy channel and 1 precopy channel, > > but > > it should be easier if we want to make it N post + 1 pre base on this > > series. > > It's not clear to me if we need to be able to

Re: [PATCH RFC 14/15] migration: Postcopy preemption on separate channel

2022-02-08 Thread Dr. David Alan Gilbert
* Peter Xu (pet...@redhat.com) wrote: > On Thu, Feb 03, 2022 at 05:45:32PM +, Dr. David Alan Gilbert wrote: > > * Peter Xu (pet...@redhat.com) wrote: > > > This patch enables postcopy-preempt feature. > > > > > > It contains two major changes to the migration logic: > > > > > > (1) Postcopy

Re: [PATCH RFC 14/15] migration: Postcopy preemption on separate channel

2022-02-07 Thread Peter Xu
On Thu, Feb 03, 2022 at 05:45:32PM +, Dr. David Alan Gilbert wrote: > * Peter Xu (pet...@redhat.com) wrote: > > This patch enables postcopy-preempt feature. > > > > It contains two major changes to the migration logic: > > > > (1) Postcopy requests are now sent via a different socket from p

Re: [PATCH RFC 14/15] migration: Postcopy preemption on separate channel

2022-02-03 Thread Dr. David Alan Gilbert
* Peter Xu (pet...@redhat.com) wrote: > This patch enables postcopy-preempt feature. > > It contains two major changes to the migration logic: > > (1) Postcopy requests are now sent via a different socket from precopy > background migration stream, so as to be isolated from very high page

[PATCH RFC 14/15] migration: Postcopy preemption on separate channel

2022-01-19 Thread Peter Xu
This patch enables postcopy-preempt feature. It contains two major changes to the migration logic: (1) Postcopy requests are now sent via a different socket from precopy background migration stream, so as to be isolated from very high page request delays (2) For huge page enabled