Re: [PATCH v6 0/4] migration: UFFD write-tracking migration/snapshots

2020-12-17 Thread Andrey Gruzdev
On 17.12.2020 00:02, Peter Xu wrote: On Tue, Dec 15, 2020 at 10:53:13PM +0300, Andrey Gruzdev wrote: First are series of runs without scan-rate-limiting.patch. Windows 10: msecs : count distribution 0 -> 1 : 131913 |**

Re: [PATCH v6 0/4] migration: UFFD write-tracking migration/snapshots

2020-12-16 Thread Peter Xu
On Tue, Dec 15, 2020 at 10:53:13PM +0300, Andrey Gruzdev wrote: > First are series of runs without scan-rate-limiting.patch. > Windows 10: > > msecs : count distribution > 0 -> 1 : 131913 || > 2 -> 3

Re: [PATCH v6 0/4] migration: UFFD write-tracking migration/snapshots

2020-12-15 Thread Andrey Gruzdev
On 11.12.2020 18:09, Peter Xu wrote: On Fri, Dec 11, 2020 at 04:13:02PM +0300, Andrey Gruzdev wrote: I've also made wr-fault resolution latency measurements, for the case when migration stream is dumped to a file in cached mode.. Should approximately match saving to the file fd directly though

Re: [PATCH v6 0/4] migration: UFFD write-tracking migration/snapshots

2020-12-15 Thread Andrey Gruzdev
On 11.12.2020 18:09, Peter Xu wrote: On Fri, Dec 11, 2020 at 04:13:02PM +0300, Andrey Gruzdev wrote: I've also made wr-fault resolution latency measurements, for the case when migration stream is dumped to a file in cached mode.. Should approximately match saving to the file fd directly though

Re: [PATCH v6 0/4] migration: UFFD write-tracking migration/snapshots

2020-12-11 Thread Peter Xu
On Fri, Dec 11, 2020 at 04:13:02PM +0300, Andrey Gruzdev wrote: > I've also made wr-fault resolution latency measurements, for the case when > migration > stream is dumped to a file in cached mode.. Should approximately match saving > to the > file fd directly though I used 'migrate exec:<>' usin

Re: [PATCH v6 0/4] migration: UFFD write-tracking migration/snapshots

2020-12-11 Thread Andrey Gruzdev
On 09.12.2020 13:08, Andrey Gruzdev wrote: This patch series is a kind of 'rethinking' of Denis Plotnikov's ideas he's implemented in his series '[PATCH v0 0/4] migration: add background snapshot'. Currently the only way to make (external) live VM snapshot is using existing dirty page logging mi

[PATCH v6 0/4] migration: UFFD write-tracking migration/snapshots

2020-12-09 Thread Andrey Gruzdev via
This patch series is a kind of 'rethinking' of Denis Plotnikov's ideas he's implemented in his series '[PATCH v0 0/4] migration: add background snapshot'. Currently the only way to make (external) live VM snapshot is using existing dirty page logging migration mechanism. The main problem is that i