| From: | Mark Kirkwood <markir(at)paradise(dot)net(dot)nz> |
|---|---|
| To: | |
| Cc: | Martijn van Oosterhout <kleptog(at)svana(dot)org>, Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>, Mike Castle <dalgoda(at)ix(dot)netcom(dot)com>, pgsql-general(at)postgresql(dot)org |
| Subject: | Re: qsort (was Re: Solaris) |
| Date: | 2003-05-02 03:06:49 |
| Message-ID: | 3EB1E0C9.4040105@paradise.net.nz |
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| Thread: | |
| Lists: | pgsql-general |
I prevailed on some friends to try out a non Redhat distro plus HPUX 10.20 :
1 United Linux 1.0 (x86 Linux 2.4.19 )
Value (i = index) BSD GLIBC (seconds)
random() * mod 0.35 0.56
i % mod 0.14 0.41
i / (ITEMS / mod) 0.10 0.27
i ^ 0x5555555 0.26 0.42
2 HPUX 10.20 (pa-risc1.1 D380 )
Value (i = index) BSD HPUX (seconds)
random() * mod 8.3 14.0
i % mod 2.9 4.9
i / (ITEMS / mod) 2.4 2.9
i ^ 0x5555555 7.8 13.8
The HPUX results are interesting !
regards
Mark
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