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    SubjectRe: MMX performance....
       Date: 	Thu, 6 Feb 1997 17:26:36 -0500 (EST)
    From: Robert L Krawitz <rlk@tiac.net>

    What's the break-even copy size? Your patch seems to suggest 512 or 1024
    bytes.

    It probably depends on the memory architecture. On my system (Neptune
    mobo, 90 MHz, memory clocked at X-3-3-3) it wins even at 256 bytes. I
    suspect with EDO it's a bit higher, in the 512-1024 byte range.

    The break even point on UltraSparcs for FPU bcopy is around 256 bytes,
    for bzero it's ~128 bytes.

    ---------------------------------------------////
    Yow! 11.26 MB/s remote host TCP bandwidth & ////
    199 usec remote TCP latency over 100Mb/s ////
    ethernet. Beat that! ////
    -----------------------------------------////__________ o
    David S. Miller, davem@caip.rutgers.edu /_____________/ / // /_/ ><

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