Re: Testing with concurrent sessions

Markus Wanner <markus@bluegap.ch> wrote:
> 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).
Where would I find this (and any related documentation)?
-Kevin