2018-08-13 17:35 GMT+08:00 Dr. David Alan Gilbert <dgilb...@redhat.com>:
> * Li Qiang (liq...@gmail.com) wrote: > > Hello Dave, Juan and all, > > > > It is useful to get the dirty page rates in guest to evaluate the guest > > loads > > so that we can make a decide to live migrate it or not. So I think we can > > add a on-demand qmp for showing the dirty page rates. > > > > I found someone has done this work in here: > > -->https://github.com/grivon/yabusame-qemu-dpt > > and here: > > https://github.com/btrplace/qemu-patch > > > > But seems not go to the upstream. > > > > I want to know your opinions about adding this qmp. > > Something like that could be good; one easy idea we had was > a 'migrate null:' uri and then you would use most of the existing > migration code to do the measurement; you would only have to > add a dummy file backend, As far as I understand, here dummy file backend just means the file migrate to, right? Thanks, Li Qiang > and something to stop the migration ever > terminating (maybe just set the downtime very low). > > > Dave > > > > Thanks, > > Li Qiang > -- > Dr. David Alan Gilbert / dgilb...@redhat.com / Manchester, UK >
