Doug McNaught wrote: > > mlw <[EMAIL PROTECTED]> writes: > > > I noticed poor performance on Solaris, does one see this problem > > when compiling PostgreSQL with gcc on solaris? > > Since it's libc that's the culprit, I would imagine so.
Thanks, that explains what I have seen. > > > As a suggestion, why not find the *best* version of qsort available, > > anywhere, and always use that version on all platforms? > > Because qsort() is *supposed* to be optimized by the vendor for their > platform, perhaps even written in assembler. It makes sense to trust > the vendor except when their implementation is provably pessimized. Perhaps *supposed* to be optimized, but, in reality, are they? Is it a realistic expectation? qsort() is a great sort for very random data, when data is mostly in the correct order, it is very bad. Perhaps replacing it with an alternate sort would improve performance in general. ---------------------------(end of broadcast)--------------------------- TIP 4: Don't 'kill -9' the postmaster
