[openstack-dev] [oslo.db] [release] opportunistic tests breaking randomly

Sean Dague sean at dague.net
Wed Sep 14 17:01:42 UTC 2016


On 09/14/2016 12:06 PM, Roman Podoliaka wrote:
> Hmm, looks like we now run more testr workers in parallel (8 instead of 4):
> 
> http://logs.openstack.org/76/335676/7/check/gate-nova-python34-db/6841fce/console.html.gz
> http://logs.openstack.org/62/369862/3/check/gate-nova-python27-db-ubuntu-xenial/2784de9/console.html
> 
> On my machine running Nova migration tests against MySQL is much
> slower with 8 workers than with 4 due to disk IO (it's HDD). When they
> time out (after 320s) I see the very same TimeoutException and
> IndexError (probably something messes up with TimeoutException up the
> stack).

Yes, by default testr runs with the number of workers matching the # of
cpus on the target. I think all our cloud providers are now 8 cpu
guests. So unit / functional tests are running 8 way. That's been true
for quite a while IIRC.

	-Sean

-- 
Sean Dague
http://dague.net



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