Re: PG qsort vs. Solaris
| От | Zdenek Kotala |
|---|---|
| Тема | Re: PG qsort vs. Solaris |
| Дата | |
| Msg-id | 4522BF94.2050908@sun.com обсуждение исходный текст |
| Ответ на | Re: PG qsort vs. Solaris (Tom Lane <tgl@sss.pgh.pa.us>) |
| Список | pgsql-hackers |
Tom Lane wrote: > Zdenek Kotala <Zdenek.Kotala@Sun.COM> writes: >> Is it time to "remove" PG qsort and use libc version for solaris 9, 10...? > > I have no particular desire to introduce a version number check until we > have to. If you can show that the newer versions have a qsort that > substantially *out-performs* ours, it would be worth doing that, but > merely being competitive isn't enough to make it worth the trouble. > The implementation in the solaris uses same ideas like postgres implementation exclude sort array detection. There are small difference with threshold when median uses 9 items and thresholdfor insertion sort. Performance is similarly - no winer (only on sorted array). Zdenek
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