Re: Cleaning up historical portability baggage

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Michael Banck <mbanck(at)gmx(dot)net>
Cc: Thomas Munro <thomas(dot)munro(at)gmail(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, Andrew Dunstan <andrew(at)dunslane(dot)net>, Robert Haas <robertmhaas(at)gmail(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Cleaning up historical portability baggage
Date: 2025-06-10 21:26:46
Message-ID: 804572.1749590806@sss.pgh.pa.us
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Michael Banck <mbanck(at)gmx(dot)net> writes:
> 2. The fact that nobody else complained about those new(er) timestamp-
> comparison additions appears to imply that there are no 100ms resolution
> machines we support anymore. So did we consider switching those
> pg_sleep(0.1) calls in stats.sql to pg_sleep(0.01) to save a bit of
> time?

Yeah, we realized last year that no supported platform has worse than
1usec gettimeofday resolution anymore [1]. So I think you're right
that we could shave some milliseconds off stats.sql, as well as some
other test scripts. I doubt this'd make for a meaningful time
savings, but perhaps it's worth doing just for consistency: grepping
for pg_sleep in our tests, I see anywhere from 0.1 to 0.001 sec.

regards, tom lane

[1] https://www.postgresql.org/message-id/flat/be0339cc-1ae1-4892-9445-8e6d8995a44d(at)eisentraut(dot)org

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