[DGD] Weird time deltas

Raymond Jennings shentino at gmail.com
Tue Dec 5 15:17:18 CET 2017


I'm not terribly familiar with RT kernels, or what exactly they do
that would let DGD get more precise callout timing.

Does it have something to do with the select() call that DGD uses to park?

On Mon, Dec 4, 2017 at 5:04 AM, Felix A. Croes <felix at dworkin.nl> wrote:
> Raymond Jennings <shentino at gmail.com> wrote:
>
>>[...]
>> I run gentoo linux on kernel 4.14, is this some sort of artifact of
>> the kernel or am I running some funky timer hardware or what?
>>
>> I noticed that all the actually reported deltas have reciprocals of
>> 16, 32, or 21.333333333
>
> You need an RT kernel for accurate timing on linux.
>
> Regards,
> Felix Croes
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> https://mail.dworkin.nl/mailman/listinfo/dgd



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