linuxaudio.org

On Thu, 2010-07-15 at 12:55 +0200, Clemens Ladisch wrote:

quoted text
> Ralf Mardorf wrote:

> > - instead of dev.hpet.max-user-freq=64 I'll try 1024 or 2048 as Robin

> > mentioned

>

> This parameter will not have any effect on anything because there is no

> program that uses the HPET timers from userspace.  When high-resolution

> timers are used by ALSA, this is done inside the kernel where there is

> no limit on the maximum frequency.

>

>

> Regards,

> Clemens

IIRC someone on jack-devel mailing list had issues when using mplayer

with the value 64 and it was solved when using the value 1024. But as I

mentioned before, for my USB MIDI there was a difference between system

timer and hr timer, but there was no difference for the value 64 and

1024, when using hr timer.
Btw. I don't understand what a maximum frequency in the context does

mean. If 64 or 1024 should have impact, what would be the result?
System timer for a kernel-rt is set up to 1000Hz and hr timer is at

1000000000Hz.
What is 'max-user-freq' for?
Cheers!
Ralf
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