Am 13.02.2014 21:06, schrieb Dr. David Alan Gilbert:
* Stefan Priebe (s.pri...@profihost.ag) wrote:
Am 10.02.2014 17:07, schrieb Dr. David Alan Gilbert:
* Stefan Priebe (s.pri...@profihost.ag) 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.
Hi Stefan,
I've just posted a patch to qemu-devel that fixes two bugs that
we found; I've only tried a small stressapptest run and it seems
to survive with them (where it didn't before); you might like to try
it if you're up for rebuilding qemu.
It's the one entitled ' [PATCH] Fix two XBZRLE corruption issues'
I'll try and get a larger run done myself, but I'd be interested to
hear if it fixes it for you (or anyone else who hit the problem).
Yes works fine - now no crash but it's sower than without XBZRLE ;-)
Without XBZRLE: i needed migrate_downtime 4 around 60s
With XBZRLE: i needed migrate_downtime 16 and 240s
Dave
--
Dr. David Alan Gilbert / dgilb...@redhat.com / Manchester, UK
