On Wed, 18 Apr 2012 15:58:47 -0700 Jim Kukunas <james.t.kukunas@xxxxxxxxxxxxxxx> wrote: > Hi Folks, > > The following patch adds an AVX implementation of the RAID5 xor checksumming > functions. > > This version differs from version 0, in that it: > 0) checks whether assembler supports AVX > 1) replaces __attribute__(aligned(32)) with __aligned(32) > 2) adds do/while(0); to macro blocks > > Based on xor_speed, the AVX implementation appears to be ~32% faster than the > SSE implementation on my i7 2600: > > generic_sse: 15088.000 MB/sec > avx: 19936.000 MB/sec > Applied, thanks. (though I remove the blank line at the end of the new file - the voices made me do it, I had no choice) NeilBrown
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