Re: [patch 1/1] pc-speaker: add SND_SILENT

[Edgar Toernig]

Vojtech Pavlik wrote:
>
> On Fri, Mar 31, 2006 at 01:07:34AM +0200, Edgar Toernig wrote:
> >
> > Latency is no problem.  I'm using a userspace daemon to emulate
> > the console beeper for about 6 months now and it work's very well.
> > 
> > The daemon listens on /dev/input/eventX and when receiving a
> 
> It needs to use /dev/input/uinput, not eventX. SND_TONE events are not
> sent to the event devices.

Well, I get them - stock 2.6.16.


> > Latency isn't noticable and memory footprint is small.
> 
> It needs to have the sample ready in memory and not swapped out. Then
> the latency will be OK, but if it needs to read it in from the disk, it
> may be very noticeable.

Yeah, if one ever cares one could mlock the samples, or (as I do) run
without swap.  Fixing the 'air' latency of 3ms/m is harder though *g*

Ciao, ET.
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