Tom Lane wrote:
Yah, I checked. Several times... but if anyone else wants to repeat
the experiment, please do. Or look for bugs in either my test case
or Gurjeet's.
FWIW - FreeBSD and Linux results using Tom's test program on almost
identical hardware[1]:
Std crc Slice-8 crc
Intel P-III 1.26Ghz (FreeBSD 6.2)
8192 bytes 12.975314 14.503810
1024 bytes 1.633557 1.852322
64 bytes 0.111580 0.206975
Intel P-III 1.26Ghz (Gentoo 2006.1)
8192 bytes 12.967997 28.363876
1024 bytes 1.632317 3.626230
64 bytes 0.111513 0.326557
Interesting that the slice-8 algorithm seems to work noticeably better
on FreeBSD than Linux - but still not as well as the standard one (for
these tests anyway)...
Cheers
Mark
[1] Both boxes have identical mobos, memory and CPUs (same sspec nos).
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