<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 TRANSITIONAL//EN"> <HTML> <HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; CHARSET=UTF-8"> <META NAME="GENERATOR" CONTENT="GtkHTML/3.28.1"> </HEAD> <BODY> Thank you very much for your work. I'll try it as soon as Lucid is officially out. /Fabien Le vendredi 12 mars 2010 à 13:42 +0100, Alessio Igor Bogani a écrit : <BLOCKQUOTE TYPE=CITE> <PRE> Hi All, For those who are interested I have placed two new kernels (-lowlatency and -realtime) into my PPA: <A HREF="https://launchpad.net/~abogani/+archive/ppa">https://launchpad.net/~abogani/+archive/ppa</A> 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 </PRE> </BLOCKQUOTE> </BODY> </HTML>