Messages in this thread |  | | | From | "Rafael J. Wysocki" <> | | Subject | Re: [Regression] 2.6.24-git9: RT sched mishandles artswrapper (bisected) | | Date | Wed, 6 Feb 2008 22:50:06 +0100 |
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On Wednesday, 6 of February 2008, Peter Zijlstra wrote: > > On Wed, 2008-02-06 at 19:25 +0100, Rafael J. Wysocki wrote: > > On Wednesday, 6 of February 2008, Peter Zijlstra wrote: > > > > > > On Wed, 2008-02-06 at 09:40 +0100, Dmitry Adamushko wrote: > > > > On 06/02/2008, Rafael J. Wysocki <rjw@sisk.pl> wrote: > > > > > On Tuesday, 5 of February 2008, Dmitry Adamushko wrote: > > > > > > Rafael, any progress with this issue? (a few questions below). > > > > > > > > > > > > > > > > > > > > > > Does this artsmessage thing also run with RT priority? > > > > > > > > > > > > > > Well, it's in a strange state (after it's broken). From top: > > > > > > > > > > > > > > PR = -51 > > > > > > > NI = 0 > > > > > > > S = R > > > > > > > %CPU = 0.0 > > > > > > > %MEM = 0.0 > > > > > > > > > > > > cat /proc/$PID/stat ; sleep 3; cat /proc/$PID/stat ? > > > > > > cat /proc/sched_debug; sleep 3 ; cat /proc/sched_debug > > > > > > > > > > Well, instead please find appended a test program that allows me to trigger > > > > > the issue. > > > > > > > > Great, I'll look at this problem in the everning (sure, if nobody else > > > > is faster :-). > > > > > > Yeah, it seems fixed here (after I made my current queue compile for > > > this silly CONFIG_USER_SCHED thing again). > > > > > > I'm now refusing realtime tasks in groups that do not have real-time > > > bandwidth assigned. > > > > If you're referring to this patch: http://lkml.org/lkml/2008/2/4/332 , then > > sorry, but it doesn't fix the issue for me, with the attached config. > > Well, that whole queue.
It doesn't compile for me.
> Your test program just failed to obtain realtime scheduling
Well, it shouldn't. The expected result is to obtain realtime scheduling or we will break existing setups.
> but didn't hang.
That's much better outcome. :-)
> I'll test your full config.
OK, thanks.
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