ci: macos: Reduce test concurrency
authorAndres Freund <andres@anarazel.de>
Sat, 1 Oct 2022 23:55:16 +0000 (16:55 -0700)
committerAndres Freund <andres@anarazel.de>
Sat, 1 Oct 2022 23:55:16 +0000 (16:55 -0700)
commit2d2f08310490d63c4cc097243ba63a1601316c17
tree9a731a96e23e73d8defad90420b5029502359ef8
parent1360943d1ac03240fc719a459aed4ad4f9f9b5d4
ci: macos: Reduce test concurrency

Test performance regresses noticably when using all cores. This is more
pronounced with meson than with autoconf, presumably because meson will
schedule the "full number" of tests more consistently.  8 seems to work
OK.

Discussion: https://postgr.es/m/20220927040208.l3shfcidovpzqxfh@awork3.anarazel.de
Backpatch: 15-, where CI was introduced
.cirrus.yml