bug in "raid5: measuring checksumming speed"

From: Krzysztof Oledzki (ole@ans.pl)
Date: Sat Oct 20 2001 - 06:54:54 EST

Hello,

It seems that there is something wrong with measuring checksumming speed -
on my two P3 boxes linux chooses pIII_sse but pII_mmx and p5_mmx are
reported as faster instructions:

2.4.10-ac10/Pentium3 733:
raid5: measuring checksumming speed
   8regs : 1266.400 MB/sec
   32regs : 898.400 MB/sec
   pIII_sse : 1508.000 MB/sec
   pII_mmx : 1643.600 MB/sec
   p5_mmx : 1730.400 MB/sec
raid5: using function: pIII_sse (1508.000 MB/sec)

Podobnie na drugim systemie:
2.4.10-ac10/Pentium3 933:
raid5: measuring checksumming speed
   8regs : 1603.600 MB/sec
   32regs : 1138.000 MB/sec
   pIII_sse : 1910.000 MB/sec
   pII_mmx : 2081.600 MB/sec
   p5_mmx : 2189.600 MB/sec
raid5: using function: pIII_sse (1910.000 MB/sec)

Best regards,

                                Krzysztof Oledzki

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This archive was generated by hypermail 2b29 : Tue Oct 23 2001 - 21:00:25 EST