Re: Timing 250 versus 1000

[Clemens Ladisch <clemens@ladisch.de>]

Alex Stone wrote:
> On 04/08/2012 05:08 PM, Clemens Ladisch wrote:
>> Alex Stone wrote:
>>> those of us who write a lot of midi driven work, we're still more or
>>> less required to use some sort of RT kernel to get any degree of
>>> playback timing accuracy.
>>
>> The ALSA sequencer timer stopped using the system timer years ago.
>> And the difference between RT and 'normal' kernels is not the timer
>> frequency.
>
> I'm using jack with seq, so are you saying the ALSA sequencer timer is
> using a higher timer rate than than is set in the kernel,

It's using different timers (RTC or hrtimer), which support higher
precision.

> and there's no need for me to bother with this,

Yes.  If you want to be sure, check that G3 appears in /proc/asound/timers
when you're using the sequencer.


Regards,
Clemens