Messages in this thread | | | Date | Wed, 3 Nov 2004 02:15:11 +0100 | From | Ingo Molnar <> | Subject | Re: [patch] Real-Time Preemption, -RT-2.6.9-mm1-V0.6.9 |
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* Rui Nuno Capela <rncbc@rncbc.org> wrote:
> Rui Nuno Capela wrote: > > > > I am also rehearsing these same tests on my P4/SMT desktop. > > I'll post those a bit later today. > > > > So here they are. This machine is a P4 2.80C@3.366GHz, HT enabled on a > Asus P4P800 mobo, Intel 82801EB onboard sound device (snd-intel8x0). > > 2.6.9smp RT-V0.6.9smp > ------------ ------------ > XRUN Rate . . . . . . . . . : 0 0 /hour > Delay Rate (>spare time) . . : 0 0 /hour > Delay Rate (>1000 usecs) . . : 0 0 /hour > Delay Maximum . . . . . . . . : 346 166 usecs > Cycle Maximum . . . . . . . . : 986 1028 usecs > Average DSP Load. . . . . . . : 25.0 25.7 % > Average Interrupt Rate . . . : 1717 1718 /sec > Average Context-Switch Rate . : 10082 15793 /sec > > As you can see, the results here aren't so disparate as on my UP > laptop.
i suspect it has to do with the different load - the UP laptop had 40% utilization, this box is 25% utilized.
> I guess that I can stress this out and lower the period size on jackd > -R, to -p64. And even increase the workload with more client instances > (from 9 to 18 ?) to let the RT show it's potential, if that makes > sense at all.
yeah, it would really be nice to see how much it can take and to see the point where the -RT kernel starts to suffer from xruns too.
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