Messages in this thread | | | Date | Mon, 22 Nov 2004 01:27:02 +0100 | From | Ingo Molnar <> | Subject | Re: Priority Inheritance Test (Real-Time Preemption) |
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* Esben Nielsen <simlo@phys.au.dk> wrote:
> Hi, > From realfeel I wrote a small, simple test to test how well priority > inheritance mechanism works.
cool - this is a really useful testsuite.
> I tested it on V0.7.26-0 and my own U9.2-priom. Both implementations > fails when the mutex is congested by more than 1 non-real-time task. > [...]
i can confirm your measurements.
I have fixed all the PI bugs that your suite uncovered (there were quite a number of them!), the fixes are included in the V0.7.30-0 patch available at the usual place:
http://redhat.com/~mingo/realtime-preempt/
with this patch i get the expected histogram with entries only in the 0-1 msec buckets.
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