[LAU] Realtime latency kernel testing

[ailo]

Also, for me, what is interesting is not exact numbers, but rather a 
general concept of how big the difference is between kernels.

Publishing a table of results will also make it possible to know what to 
expect from let's say a certain intel atom processor run on a list of 
kernels from an example repository.
I gather this could be helpful to the user when choosing hardware and 
distro to a project, if the project involves as earlier mentioned one of:

* live audio processing
* monitoring
* using firewire devices

>  From a practical point of view for someone as ignorant about the
> technical details as myself, I suppose I'm just trying to get a general
> idea of what you get from different kernels.
>
> So, I was making outlines on how to do these two things:
>
> 1. a test/script for making tests on a single machine to compare
> performance on different kernels.
>
> 2. results summed up in a table that gives you a general idea of what
> you get with different kernels.
>
> There could perhaps be a number of different tables for different
> processors, assuming that the processor is the main important factor
> that decides the actual latency you get with a kernel.
>
> These tests could then be published in a wiki, if deemed worthy.
>
> - Why such a table should be made, and for who?:
>
> Some practical uses that may require a rt kernel:
> * live audio processing (requires low latency)
> * monitoring (requires low latency)
> * using firewire devices (As far as I understand ffado works best with
> -rt kernels)
>
> Possible/impossible?
>


-- 
ailo