Robert Haas <robertmh...@gmail.com> writes: > Instead of or in addition to a fixed number operations per test, maybe > we should cut off each test after a certain amount of wall-clock time, > like 15 seconds.
+1, I was about to suggest the same thing. Running any of these tests for a fixed number of iterations will result in drastic degradation of accuracy as soon as the machine's behavior changes noticeably from what you were expecting. Run them for a fixed time period instead. Or maybe do a few, then check elapsed time and estimate a number of iterations to use, if you're worried about the cost of doing gettimeofday after each write. regards, tom lane -- Sent via pgsql-hackers mailing list (firstname.lastname@example.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers