Jeff Davis <pgsql(at)j-davis(dot)com> writes:
> I used strcmp() and strcoll() in a tight loop, and the result was
> indistinguishable.
That's not particularly credible ... were you testing this in a
standalone test program? If so, did you remember to do setlocale()
first? Without that, you'll be in C locale regardless of environment
contents.
regards, tom lane