lkml.org 
[lkml]   [2002]   [Apr]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: Why HZ on i386 is 100 ?


    On Wed, 17 Apr 2002, Mark Mielke wrote:
    > On Tue, Apr 16, 2002 at 08:57:09PM -0400, Robert Love wrote:
    > >
    > > Because that is what Alpha does? It seems to me there is no reason for
    > > a power-of-two timer value, and using 1024 vs 1000 just makes the math
    > > and rounding more difficult.
    >
    > Only from the perspective of time displayed to a user... :-)

    No, it also makes it much easier to convert to/from the standard UNIX time
    formats (ie "struct timeval" and "struct timespec") without any surprises,
    because a jiffy is exactly representable in both if you have a HZ value
    of 100 or 100, but not if your HZ is 1024.

    Linus

    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2005-03-22 13:25    [from the cache]
    ©2003-2011 Jasper Spaans. Advertise on this site