> On 19 Mar 2024, at 13:28, Peter Eisentraut <pe...@eisentraut.org> wrote:
>
> I feel that we don't actually have any information about this portability
> concern. Does anyone know what precision we can expect from gettimeofday()?
> Can we expect the full microsecond precision usually?
At PGConf.dev Hannu Krossing draw attention to pg_test_timing module. I’ve
tried this module(slightly modified to measure nanoseconds) on some systems,
and everywhere I found ~100ns resolution (95% of ticks fall into 64ns and 128ns
buckets).
I’ll add cc Hannu, and also pg_test_timing module authors Ants ang Greg. Maybe
they can add some context.
Best regards, Andrey Borodin.
