On Fri, Sep 5, 2014 at 10:35 PM, Andrey Korolyov <and...@xdel.ru> wrote: > On Fri, Sep 5, 2014 at 10:26 PM, Marcelo Tosatti <mtosa...@redhat.com> 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 <mtosa...@redhat.com> 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.
Heh... hit independent bug due to different pre-test conditions, the patch itself is ok. Bug follows: - boot up a VM, make sure to feed it heavy long task, for example kernel compilation, - neither migrate once in the middle of process (with fallback to non-live migration which is available in libvirt, else it may take forever) or just wait up to the end, - live migration time degrades from sub-10s value to larger values forever, not regarding if workload is still presented or not.
