Re: New CRC algorithm: Slicing by 8

On Sun, Oct 22, 2006 at 06:06:13PM -0400, Tom Lane wrote:
> Intel Xeon EM64T (Fedora Core 5)
>
> 8192 bytes 4.420879 7.633120
> 1024 bytes 0.571794 0.819372
> 64 bytes 0.047354 0.071906
>
> Intel Pentium 4 (Fedora Core 5)
>
> 8192 bytes 6.942324 28.848572 (yes, really)
> 1024 bytes 0.905259 3.625360
> 64 bytes 0.068065 0.260224

AMDX2 3800+ (Fedora Core 5)

STD CRC SLICE8 CRC

8192 bytes 8.576635 7.170038
1024 bytes 1.504361 1.402446
64 bytes 0.154459 0.144209

Odd that the AMD shows opposite of the two Intel numbers above, and
that it was an "Intel engineer" who wrote it. My first speculation is
that you did your Intel numbers backwards. My second speculation is
that you already thought of that and confirmed before posting. :-)

So yeah - not too impressive...

Cheers,
mark

--
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