Kernels for low latency/real time environments

[ttoine at ttoine.net]

Alessio,

Is it possible to make trials with -headers packages ? Can you provide
some sources if it is not in your ppa ?

Toine



Alessio Igor Bogani a écrit :
> Hi All,
>
> For those who are interested I have placed two new kernels
> (-lowlatency and -realtime) into my PPA:
> https://launchpad.net/~abogani/+archive/ppa
>
> The -lowlatency kernel contains a more aggressive configuration to
> reduce latency than the -preempt one. But like -preempt it doesn't
> contain any code changes (so both start from the same -generic source
> tree).
>
> The -realtime kernel contains the upstream version of PREEMPT_RT
> patchset applied to a vanilla Linux kernel. The Ubuntu Archive already
> provides the linux-rt package but it uses the Karmic source tree as
> base for PREEMPT_RT patchset.
>
> The PPA also contains meta-packages so that after you have added PPA
> into your Ubuntu system a simple "sudo apt-get install linux-realtime"
> or "sudo apt-get install linux-lowlatency" will install what you need.
> There is also a recent copy of rt-tests for evaluation and comparison
> of all kernels and to better identify which meets your needs.
>
> I suggest following these simple rules:
>
> *) if you don't need a low latency system use -generic kernel
> *) If you need a low latency system please use -preempt kernel as a
> first choice (this reduces latency but doesn't sacrifice power saving
> features) from the Ubuntu archives directly from Ubuntu Kernel Team
> *) If you have an i386 system or -preempt isn't enough for your needs
> you should try the -lowlatency kernel present in my above-mentioned
> PPA.
> *) If -lowlatency also isn't enough you should try the -realtime
> kernel (like -lowlatency it is available through my PPA)
>
> Feel free to get in touch with me if you find these useful.
>
> Thanks!
>
> Ciao,
> Alessio
>
>