[openstack-dev] [oslo.db] PyMySQL review

Roman Podoliaka rpodolyaka at mirantis.com
Thu Jan 29 16:57:30 UTC 2015


I don't have exact numbers, so yeah, it's just an assumption based on
looking at the nova-api/scheduler logs with connection_debug set to

But that's a good point you are making here: it will be interesting to
see what difference enabling of PyMySQL will make for tempest/rally
workloads, rather than just running synthetic tests. I'm going to give
it a try on my devstack installation.


On Thu, Jan 29, 2015 at 6:42 PM, Jeremy Stanley <fungi at yuggoth.org> wrote:
> On 2015-01-29 18:35:20 +0200 (+0200), Roman Podoliaka wrote:
> [...]
>> Otherwise, PyMySQL would be much slower than MySQL-Python for the
>> typical SQL queries we do (e.g. ask for *a lot* of data from the DB).
> [...]
> Is this assertion based on representative empirical testing (for
> example profiling devstack+tempest, or perhaps comparing rally
> benchmarks), or merely an assumption which still needs validating?
> --
> Jeremy Stanley
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