Hi, On 2018-01-24 17:18:26 -0300, Alvaro Herrera wrote: > Andres Freund wrote: > > Besides larger groups, starting the next test(s) earlier, another way to > > gain pretty large improvements would be a test schedule feature that > > allowed to stat dependencies between tests. So instead of manually > > grouping the schedule, have 'numerology' state that it depends on int2, > > int4, int8, float4, float8, which means it can actually be started > > earlier than it currently can in many cases. > > Yeah, I proposed this a decade ago but never had the wits to write the > code.
It shouldn't be too hard, right? Leaving defining the file format, parsing it, creating the new schedule with depencencies and adapting tests aside (hah), it mostly seems a relatively simple graph ordering / topological sort problem, right? If we keep the timings from an earlier run somwhere, we can use the timing of runs as edge weights, making the schedule better. > It would be very useful for running tests standalone, too -- much as I > dislike 'make installcheck' taking half a minute, I dislike much more > having to take 5 minutes each time to figure out that create_table > depends on box, polygon, create_function, yadda yadda. Oh, that's a good point. - Andres
