Timers in drivers vs userland
Alfred Perlstein
alfred at freebsd.org
Mon Oct 20 17:39:38 UTC 2008
Have you tried using rtprio?
You'll have to be really careful though so as not to jam up the
system using it.
-Alfred
* Len Gross <sandiegobiker at gmail.com> [081018 17:28] wrote:
> Slight correction; I should have said more accurate usleep, not "timer."
>
> -- Len
>
> On Sat, Oct 18, 2008 at 3:12 PM, Len Gross <sandiegobiker at gmail.com> wrote:
> > If I place a timer directly in a driver (like Ethernet) will it be
> > subject to less jitter and more consistency than if it were in
> > Userland?
> >
> > I know FreeBSD is not "real time," but I need to be able to run a
> > polling algorithm with about 1 ms accuracy.
> >
> > Thanks in advance.
> >
> > (Please tell me if there is a better list for this question.)
> >
> > -- Len
> >
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--
- Alfred Perlstein
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