Re: Testing with concurrent sessions

Hi,

Kevin Grittner wrote:
> It's very soon going to be critical that I be able to test particular
> interleavings of statements in particular concurrent transaction sets
> to be able to make meaningful progress on the serializable
> transaction work.

I've something in place for Postgres-R, as I also need to test
concurrent transactions there. It's based on python/twisted and is able
to start multiple Postgres instances (as required for testing
replication) and query them concurrently (as you seem to need as well).
It uses an asynchronous event loop (from twisted) and basically controls
processes, issues queries and checks results and ordering constraints
(e.g. transaction X must commit and return a result before transaction Y).

I'm still under the impression that this testing framework needs
cleanup. However, others already showed interest as well...

Regards

Markus Wanner