Re: [Qemu-devel] [pve-devel] QEMU LIve Migration - swap_free: Bad swap file entry

[Stefan Priebe]

Am 10.02.2014 17:07, schrieb Dr. David Alan Gilbert:
> * Stefan Priebe (address@hidden) wrote:
> > i could fix it by explicitly disable xbzrle - it seems its
> > automatically on if i do not set the migration caps to false.
> >
> > So it seems to be a xbzrle bug.
>
> Stefan can you give me some more info on your hardware and
> migration setup;   that stressapptest (which is a really nice
> find!) really batters the memory and it means the migration
> isn't converging for me, so I'm curious what your setup is.

That one is devlopment by google and known to me since a few years. 
Google has detected that memtest and co are not good enough to stress 
test memory.

>    What CPU have you got?

Dual Xeon E5-2695v2

>    How many cores are you giving each guest?

16

>    What network technology are you migrating over?

10Gb/s

>    Other than xbzrle what else do you have enabled?

nothing

>    How long is the migrate taking for you?

with migration_downtime => 4s around 10s

Stefan

> Thanks,
>
> Dave
> --
> Dr. David Alan Gilbert / address@hidden / Manchester, UK