Greg Stark <[EMAIL PROTECTED]> writes: > My question explicitly recognized that possibility. I'm just a little > skeptical since the comparison function in Postgres is often not some simple > bit of tightly optimized C code, but rather a complex locale sensitive > comparison function or even a bit of SQL expression to evaluate.
Yeah, I'd guess the same way, but OTOH at least a few people have reported that our qsort code is consistently faster than glibc's (and that was before this fix). See this thread: http://archives.postgresql.org/pgsql-hackers/2005-12/msg00610.php Currently I believe that we only use our qsort on Solaris, not any other platform, so if you think that glibc's qsort is better then you've already got your wish. It seems to need more investigation though. In particular, I'm thinking that the various adjustments we've made to the sort support code over the past month probably invalidate any previous testing of the point, and that we ought to go back and redo those comparisons. regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 5: don't forget to increase your free space map settings
