[openstack-dev] [Ceilometer] [QA] Slow Ceilometer resource_list CLI command

Joe Gordon joe.gordon0 at gmail.com
Mon Mar 17 19:22:09 UTC 2014

On Mon, Mar 17, 2014 at 11:55 AM, Matthew Treinish <mtreinish at kortar.org>wrote:

> Hi everyone,
> So a little while ago we noticed that in all the gate runs one of the
> ceilometer
> cli tests is consistently in the list of slowest tests. (and often the
> slowest)
> This was a bit surprising given the nature of the cli tests we expect them
> to
> execute very quickly.
> test_ceilometer_resource_list which just calls ceilometer resource_list
> from the
> CLI once is taking >=2 min to respond. For example:
> http://logs.openstack.org/68/80168/3/gate/gate-tempest-dsvm-postgres-full/07ab7f5/logs/tempest.txt.gz#_2014-03-17_17_08_25_003
> (where it takes > 3min)
> The cli tests are supposed to be quick read-only sanity checks of the cli
> functionality and really shouldn't ever be on the list of slowest tests
> for a
> gate run. I think there was possibly a performance regression recently in
> ceilometer because from I can tell this test used to normally take ~60 sec.
> (which honestly is probably too slow for a cli test too) but it is
> currently
> much slower than that.

Sounds like we should add another round of sanity checking to the CLI
tests: make sure all commands return within x seconds.   As a first pass we
can say x=60 and than crank it down in the future.

> From logstash it seems there are still some cases when the resource list
> takes
> as long to execute as it used to, but the majority of runs take a long
> time:
> http://goo.gl/smJPB9
> In the short term I've pushed out a patch that will remove this test from
> gate
> runs: https://review.openstack.org/#/c/81036 But, I thought it would be
> good to
> bring this up on the ML to try and figure out what changed or why this is
> so
> slow.
> Thanks,
> -Matt Treinish
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> OpenStack-dev at lists.openstack.org
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