[LAU] Realtime latency kernel testing

[ailo]

On 12/12/2010 01:34 PM, Peter Plessas wrote:
> ailo wrote:
>> I've been looking around for any tests made comparing the different
>> kernels, -rt, generic, or any other type of realtime enchanced kernel.
>> I haven't found any test results yet, at least none audio related. I did
>> find some testing tools at rt.wiki.kernel.org, but don't know if and how
>> they could be made relevant to audio low latency testing.
>>
>> I suppose the most interesting results would come from testing different
>> kernels with jack/alsa and jack/ffado.
>>
>> Has anyone done such tests?
>
> There is jack_delay from fons, which can measure the effective overall
> latency of your soundcard/drivers/jack/whatever. Plus there is a
> "latency.pd" patch that does the same (but with less precision) and
> which also features a nice "continuity" measurement, detecting cliks and
> dropouts.
>
> best, P
>

I've must have seen "latency.pd" at some point, but forgotten about it. 
Since I use pd almost exclusively I will find it most useful.

I will also have a look at jack_delay.

Thanks.

-- 
ailo