[Fwd: Re: realtime kernel for Debian]
rosea.grammostola at gmail.com
Wed Mar 25 20:43:24 GMT 2009
Sorry, but I've to call again...
The developers seems very willing to include a realtime kernel there
repo. They need some people who wants to build and maintain it. This is
really a chance for linux audio, especially on Debian. *This is the
So please consider to offer your help in building, maintaining and/or
Thanks in advance,
Grammostola Rosea wrote:
> Grammostola Rosea wrote:
>> There is an promising discussion on the debian-dev mailinglist. Maybe
>> some people who knows more about realtime kernels could join. Also
>> users who might want to have an realtime kernel in Debian and/or want
>> help testing could join the discussion. I think it would be nice if
>> there is also an realtime kernel in Debian or that the default kernel
>> would be improved for realtime (audio) usage.
> Here is the thread about a realtime kernel in Debian:
> Kind regards,
>> Re: realtime kernel for Debian
>> "Giacomo A. Catenazzi" <cate at debian.org>
>> Tue, 24 Mar 2009 13:26:35 +0100
>> debian-devel at lists.debian.org
>> debian-devel at lists.debian.org
>> Raphael Hertzog wrote:
>>> On Tue, 24 Mar 2009, Giacomo A. Catenazzi wrote:
>>>> Do you really need real time kernel?
>>>> Debian is a technical driven project, but reading the previous two
>>>> "real time" is used as marketing thing.
>>> It's good to question the use of any feature, but a real-time kernel is
>>> certainly very useful in many industrial applications and Debian is
>>> popular in that field. (Don't put a marketing label on anything where
>>> you are not yourself sure of your expertise.)
>> Yes, I didn't write very well my sentence: the previous quotes was more
>> about "there exist rt kernels", "ubuntu has a rt kernel", but not solid
>> requirements. I had to write some "seems", and I'm sorry for the two
>> quoted people if it seems an attack.
>> Anyway, later in the mail, I asked for precise needs, so we could see
>> better what we should improve.
>> IMHO most users want a low latency kernel, but not a slower kernel, so
>> a CONFIG_HZ_1000 would be nice. But the original post was about
>> multimedia production (and not reproduction), so the needs are probably
>> My point was more:
>> - Debian has not rt kernel. Why? Non DD interested or/and low demand?
>> This is an important point. We must not produce a rt-kernel if
>> we cannot provide testers and developers (in unstable).
>> - kernel management is a weak point in distribution: no good method
>> for kernel dependencies, using full capabilities, ...
>> so IMHO we should try harder with the normal kernel, so that we
>> can use the same infrastructure and testers. If we fail and we
>> are able to support rt kernels, IMO it is good to provide it in Debian.
>> The original mail was about "multimedia production" and few year ago
>> developers had a lot of interaction with music industries.
>> I'm not an expert in the field, but how far are we in their need with
>> standard kernels?)
>>> I do use a real-time kernel on a Debian based system for one of my
>>> customers (but I have to recompile the kernel anyway because I do other
>>> customizations) and I have good reasons to do so because I can't suffer
>>> serial overrun and I must ensure that the serial interrupt handler
>>> is run in the required time and that no other (kernel) task has higher
>> These *other customizations* are important to rt-kernel. So we need
>> a person (or more) that know the needs and could support us.
>> "realtime" alone is only a label ;-)
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