Petr Jelinek <p...@2ndquadrant.com> writes: > On 03/04/2020 16:59, Tom Lane wrote: >> Petr Jelinek <p...@2ndquadrant.com> writes: >>> AFAIK gcov can't handle multiple instances of same process being started >>> as it just overwrites the coverage files. So for TAP test it will report >>> bogus info (as in some code that's executed will look as not executed).
>> Hm, really? I routinely run "make check" (ie, parallel regression >> tests) under coverage, and I get results that seem sane. If I were >> losing large chunks of the data, I think I'd have noticed. > Parallel regression still just starts single postgres instance no? But the forked-off children have to write the gcov files independently, don't they? regards, tom lane