Re: [PATCH]sched: Isochronous class v2 for unprivileged soft rt scheduling

[Con Kolivas]

Jack O'Quin wrote:
> Con Kolivas <kernel@xxxxxxxxxxx> writes:
>
>
> > Here's fresh results on more stressed hardware (on ext3) with
> > 2.6.11-rc1-mm2 (which by the way has SCHED_ISO v2 included). The load
> > hovering at 50% spikes at times close to 70 which tests the behaviour
> > under iso throttling.
>
>
> What version of JACK are you running (`jackd --version')?
>
> You're still getting zero Delay Max.  That is an important measure.

Ok updated jackd

Here's an updated set of runs. Not very impressive even with SCHED_FIFO, 
but the same from both policies.

==> jack_test4-2.6.11-rc1-mm2-fifo.log <==
Number of runs  . . . . . . . :(    1)
*********************************************
Timeout Count . . . . . . . . :(    0)
XRUN Count  . . . . . . . . . :   404
Delay Count (>spare time) . . :     0
Delay Count (>1000 usecs) . . :     0
Delay Maximum . . . . . . . . : 261254   usecs
Cycle Maximum . . . . . . . . :  2701   usecs
Average DSP Load. . . . . . . :    52.4 %
Average CPU System Load . . . :     5.1 %
Average CPU User Load . . . . :    18.1 %
Average CPU Nice Load . . . . :     0.0 %
Average CPU I/O Wait Load . . :     0.0 %
Average CPU IRQ Load  . . . . :     0.0 %
Average CPU Soft-IRQ Load . . :     0.0 %
Average Interrupt Rate  . . . :  1699.3 /sec
Average Context-Switch Rate . : 19018.9 /sec
*********************************************
Delta Maximum . . . . . . . . : 0.00000
*********************************************

==> jack_test4-2.6.11-rc1-mm2-iso.log <==
Number of runs  . . . . . . . :(    1)
*********************************************
Timeout Count . . . . . . . . :(    0)
XRUN Count  . . . . . . . . . :   408
Delay Count (>spare time) . . :     0
Delay Count (>1000 usecs) . . :     0
Delay Maximum . . . . . . . . : 269804   usecs
Cycle Maximum . . . . . . . . :  2449   usecs
Average DSP Load. . . . . . . :    52.6 %
Average CPU System Load . . . :     5.0 %
Average CPU User Load . . . . :    17.8 %
Average CPU Nice Load . . . . :     0.0 %
Average CPU I/O Wait Load . . :     0.1 %
Average CPU IRQ Load  . . . . :     0.0 %
Average CPU Soft-IRQ Load . . :     0.0 %
Average Interrupt Rate  . . . :  1699.2 /sec
Average Context-Switch Rate . : 19041.0 /sec
*********************************************
Delta Maximum . . . . . . . . : 0.00000
*********************************************

I've updated the pretty graphs and removed the dud runs from here:
http://ck.kolivas.org/patches/SCHED_ISO/iso2-benchmarks/

Con

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