Re: 2.6.15-rt3 + Open Posix Test Suite

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On Tue, 2006-01-10 at 22:53 -0500, Steven Rostedt wrote:

> This runs a while loop at SCHED_FIFO prio 99?  And alarm never happens.
> Doesn't the alarm get activated by the softirqd that is running at a
> lower priority?  Seems that this is starving out the softirq from
> getting the alarm.

I thought alarm was a signal (SIGALRM) ? If it's delivered by softirqd
then this makes sense. Your right , it's softirqd related. 

The processes also calls yield() inside it's while loop . We have
warnings about yield() and RT tasks. 

> I believe that Thomas once had priorities attached to the timers.  I'd
> like to see that again, and may even start adding them myself, such that
> when a process activates a timer, when that timer goes off, the softirq
> will get the priority of the timer.  But this has some complications to
> be sorted out.

Yes, I remember . Do we fix the test in this case, or the kernel ?


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