I noticed the tests added in this patch set are very slow. Here are
some of the timings:
...
[13:26:59] t/018_wal_optimize.pl ................ ok 13976 ms
[13:27:13] t/019_replslot_limit.pl .............. ok 10976 ms
[13:27:24] t/020_archive_status.pl .............. ok 6190 ms
[13:27:30] t/021_row_visibility.pl .............. ok 3227 ms
[13:27:33] t/022_crash_temp_files.pl ............ ok 2296 ms
[13:27:36] t/023_pitr_prepared_xact.pl .......... ok 3601 ms
[13:27:39] t/024_archive_recovery.pl ............ ok 3937 ms
[13:27:43] t/025_stuck_on_old_timeline.pl ....... ok 4348 ms
[13:27:47] t/026_standby_logical_decoding.pl .... ok 117730 ms <<<
Is it possible to improve this?