On Fri, Aug 25, 2017 at 8:07 AM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> I doubt this is a hardware issue, it's more likely that you're comparing
> apples and oranges. The first theory that springs to mind is that the
> sort keys are strings and you're using C locale on the faster machine but
> some non-C locale on the slower. strcoll() is pretty darn expensive
> compared to strcmp() :-(
strcoll() is very noticeably slower on macOS, too.
--
Peter Geoghegan
