lkml.org 
[lkml]   [2004]   [Dec]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: dynamic-hz
    Hi!

    > > > > But that does not matter, right? Yes, one-shot timer will not fire
    > > > > exactly at right place, but as long as you are reading TSC and basing
    > > > > next shot on current time, error should not accumulate.
    > > >
    > > > As said in the rest of the message, the error (or some other error)
    > > > accumulates heavily today in the tick-loss compensation/adjustment
    > > > algorithm in arch/i386/kernel/timers/timer_tsc.c, so I'm sceptical
    > > > about
    > >
    > > I do not see how it should accumulate. Lets have working TSC. You want
    > > to emulate fixed-period timer with single-shot timer.
    >
    > Its caused by the fact that we don't use the the TSC to accumulate time.
    > We are instead interpolating between timer ticks and the TSC, where

    Yes, it was supposed to be simple, so that Andrea understands that
    there's nothing inherently broken with single-shot timers.

    Pavel
    --
    People were complaining that M$ turns users into beta-testers...
    ...jr ghea gurz vagb qrirybcref, naq gurl frrz gb yvxr vg gung jnl!
    -
    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 14:08    [W:0.032 / U:0.436 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site