[PlanetCCRMA] [Fedora-music-list] fedora 15 vs. the rt kernel

Orcan Ogetbil oget.fedora at gmail.com
Tue Jun 14 15:19:45 PDT 2011

On Tue, Jun 14, 2011 at 6:11 PM, Fernando Lopez-Lezcano  wrote:
> Hi all, just a couple of comments about rt patched kernels and Fedora 15.
> In short, it looks like 2.6.33.x is too old to work with the new systemd
> startup system in Fedora 15. While I did manage to boot, shutting down
> did not work (at least not cleanly) and others have not been able to
> even boot "legacy" 2.6.33.x-rtxx kernels in Fedora 15. Apparently this
> is the issue:
>   https://bugzilla.redhat.com/show_bug.cgi?id=628004
> So, for now the only option seems to be to use the newest
> kernel with threaded irqs active. This is _not_ a fully rt patched
> kernel and my initial tests with the cyclictest utility show higher
> latency hits than rt31. I'm currently building and testing packages.
> Another option would be to revert (for now) from systemd to the previous
> startup scripts. I don't know if that is even possible, maybe others in
> the lists would be able to comment.

Hi Fernando,

I read but not tried that passing the argument
to the kernel at boot should load upstart. I have not tried it myself though.


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