Re: a joint letter on low latency and Linux

[Benno Senoner]

>On Fri, 30 Jun 2000, Gregory Maxwell wrote:
>
>> It can already do it with a fast system, HZ=1000 and ingos patch. 
>
>You can't do that and expect sub-systems that use HZ as a reference base.
>Since I have not followed the thread, completely, I may ge out of context.
>Regardless if I am, a global assuption of the value of HZ is used by more
>than just me.
>
>Andre Hedrick
>The Linux ATA/IDE guy

no HZ=1000 is not needed , since your task get woken up by
blocking write() to /dev/dsp.

Anyway UTIME style timers whould really useful for implementing
multimedia sw. (eg a MIDI sequencer need an accurate timing
source in order to schedule events (write to the output interface)
at the right time.
Currently RTC is one of the good sources, but the problem is that
there is only one instance avalable, thus running 2 apps concurrently
needs a different solution.

Benno.