[LAD] [OT] Real-time threads on openSuSE 11.4

Jörn Nettingsmeier nettings at stackingdwarves.net
Sat Oct 20 17:44:07 UTC 2012

On 10/19/2012 03:02 PM, Fons Adriaensen wrote:
> Hello all,
> My ex-collegues at Alcatel are screaming for help. They want to run
> an app (as root, debatable but that's another story) using SCHED_FIFO
> threads on an openSuSE 11.4 system.
> Using the 'default' kernel (which has CONFIG_PREEMPT not set), this
> works. Using the 'desktop' kernel (CONFIG_PREEMPT=y) they get an
> EPERM when trying to start a RT thread, even as root.
> As I haven't used SuSE for ages, has anyone an idea of what is
> happening here ?
> TIA,

god's way of telling them oS 11.4 has just been deprecated and will not 
receive further mainline support? :)

i'm not sure 11.4 had cgroups enabled already, but if so, then robin is 
probably right on the mark.

Jörn Nettingsmeier
Lortzingstr. 11, 45128 Essen, Tel. +49 177 7937487

Meister für Veranstaltungstechnik (Bühne/Studio)
Tonmeister VDT


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