Re: [linux-audio-dev] alsa latency statistics

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Subject: Re: [linux-audio-dev] alsa latency statistics
From: Roger Larsson (roger.larsson_AT_norran.net)
Date: Wed Oct 24 2001 - 19:15:53 EEST


On Wednesday 24 October 2001 03:54, dave willis wrote:
> - - -
> latencytest was ran as follows:
> ./latencytest -t alsa -d hw -q none 3 256
> ./latencytest -t oss -q none 3 256

Question is, what did you do while this did run?
* Compile the kernel?
* run x11perf?
There are lots of testcases included in the latencytest package.

The point with the patches are to give a better worst case!
The normal case when nothing else is being run will not change.
(latency as a term is difficult. The audio latency in this case is
 close to "buffer latency= 4.000 ms" - i.e. from generation to actual
 sending to soundcard, then add some time for output filters...)

> - - -

> used alsa-cvs from oct 20, oss = alsa's oss-emu

Tests with standard oss would be interesting too...

/RogerL

-- 
Roger Larsson
Skellefteċ
Sweden


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