Re: [HACKERS] Need a builtin way to run all tests faster manner

On Thu, Mar 9, 2017 at 6:49 AM, Andres Freund <andres@anarazel.de> wrote:
> On 2017-03-08 16:32:49 -0500, Peter Eisentraut wrote:
>> On 3/6/17 19:53, Andres Freund wrote:
>> > I'm just not quite sure what the best way is to make it easier to run
>> > tests in parallel within the tree.
>>
>> make check-world -j2 seems to run fine for me.
>
> Hm, I at least used to get a lot of spurious failures with this. I
> e.g. don't think the free port selection is race free.

pg_regress is running each Postgres instance in a separate Unix socket
directory, so the port selection is not problem. PostgresNode.pm is
also careful about that.

> Also that
> doesn't solve the issue of the time spent in repetitive initdbs - but
> that's mainly in contrib, and we probably solve that there by having a
> special target in contrib/ building a cluster once.

Yeah, you can count the growing src/test/modules in that as well.
-- 
Michael