[lkml]   [2012]   [Mar]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: sched: Avoid SMT siblings in select_idle_sibling() if possible
    On Mon, 2012-03-26 at 20:06 +0200, Peter Zijlstra wrote:

    > The biggest regression came from tbench, wasn't that mostly a random
    > number generator anyway?

    That's dbench ;-) Tbench does wiggle around more than you'd like
    though. I've never tracked, but in lots of running the thing, 2-3% you
    can forget chasing, and I once bisected a 5% regression to an unrelated
    change, reverted and re-applied the suspect a few times in disbelief,
    and it tracked. You can't trust it _too_ much. I consider it a
    reliable indicator that I'd better do more testing. If others agree,
    it's a real regression, if not, it's those damn Elves 'n Gremlins ;-)


     \ /
      Last update: 2012-03-27 15:59    [W:0.018 / U:16.188 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site