Re: [Qemu-devel] [patch 0/3] kvmclock: Ensure time in migration never goes backward (v3)

[Andrey Korolyov]

On Fri, Sep 5, 2014 at 10:26 PM, Marcelo Tosatti <address@hidden> wrote:
> On Fri, Sep 05, 2014 at 10:16:17PM +0400, Andrey Korolyov wrote:
>> On Fri, Sep 5, 2014 at 5:52 PM, Marcelo Tosatti <address@hidden> wrote:
>> > Regression fix tested with fio and ping-pong migration.
>> >
>> >
>>
>> Thanks, actually this series also introduces regression with average
>> live migration time - 42s avg vs 7s avg for the reference VM on
>> ping-pong test. Can you please confirm this?
>
> Can't confirm - migration time is similar for me.
>
> What workload are you using?
>

Just an 'empty' VM on reference test and fio tests at the
patch-specific test suite. Actual presence of workload brings
difference for about 2s, effectively unmeasurable on a small series of
40+s migration times.