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

Clark Boylan cboylan at sapwetik.org
Wed Sep 14 23:07:13 UTC 2016


On Wed, Sep 14, 2016, at 10:01 AM, Sean Dague wrote:
> 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.

OSIC is 4vcpu and the others have 8vcpu.

Clark



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