Re: [Jack-Devel] Installers for Jack 1.9.8 (SVN 4356) for Windows 64 and 32 bits

On Sat, Apr 30, 2011 at 1:06 PM, Devin Anderson
<[hidden]> wrote:
> On Sat, Apr 30, 2011 at 12:34 PM, Peter L Jones <[hidden]> wrote:
>
>> Aha, that'll be because I typed it wrong... ;)
>> http://dino.drealm.info/peter/media/jacklogs.7z
>
> Interesting.  Both tests show that the timer wakes up within 1
> millisecond of the ideal send time (sometimes early, sometimes late),
> which means the timer code is introducing, at most, 2 milliseconds
> peak jitter.  I can probably get that down to 1 millisecond of peak
> jitter by introducing a second wait of 1 millisecond when the timer
> wakes up early, but I don't think I can do better than that without
> hackish busy-waiting due to Windows limitations on wakeup resolution.

Apparently, this isn't the case.  On further research, it appears that
the timers *always* have a wakeup of +/- 1 millisecond.  So, if I
tried to set the timer to wakeup a millisecond later, I might wake up
2 milliseconds or later.  That would just create more jitter.

Oh well.

-- 
Devin Anderson
devin (at) charityfinders (dot) com

CharityFinders - http://www.charityfinders.com/
synthclone - http://synthclone.googlecode.com/

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