[lkml]   [2001]   [Feb]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    > > uninlining the code is too high a cost.
    > I question that. Athlon does branch prediction on call targets, function
    > calls are cheap. 3dnow saves 25%-50% of cycles on a copy. How many function
    > calls can be paid for with 1000 cycles or so?
    > My patch still inlines the standard string const_memcpy for the case of
    > small known length.

    We have a very large number of memcpy's of unknown short length (often in
    interrupts) that are close to branches. A lot of


    stuff for example.

    Im more than happy for someone to do the benches and prove me wrong

    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to
    Please read the FAQ at

     \ /
      Last update: 2005-03-22 13:27    [W:0.023 / U:4.224 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site