Re: Performance benefits of rep/loop?

From: Matt Taylor (para_at_tampabay.rr.com)
Date: 05/26/04

  • Next message: Robert Redelmeier: "Re: Write arguments on stack to stdout in Linux: How do i count the number of char's in each argument?" 
    Date: Wed, 26 May 2004 09:20:21 +0000 (UTC)

    "flekso" <flekso@vip.hr> wrote in message news:c8v5st$vf$1@ls219.htnet.hr...
    <snip>
    > Y'all talk about loop unrolling, replacing 1 old instruction with 3-5
    new..
    > But what happens when you write an OS using such techniques, and each of
    the
    > 21 running threads has code written in such manner, what happens with the
    > instruction cache ? And if every process is written like that ?

    In that case, it is rather fortunate that code spends 99% of its time in
    loops.

    -Matt

  • Next message: Robert Redelmeier: "Re: Write arguments on stack to stdout in Linux: How do i count the number of char's in each argument?"

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