Messages in this thread | | | Date | Thu, 9 Dec 2004 17:17:09 +0100 | From | Florian Schmidt <> | Subject | Re: [patch] Real-Time Preemption, -RT-2.6.10-rc2-mm3-V0.7.32-6 |
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On Thu, 9 Dec 2004 09:16:49 -0600 Mark_H_Johnson@raytheon.com wrote:
> Comparison of .32-5RT and .32-5PK results > RT has PREEMPT_RT, > PK has PREEMPT_DESKTOP and no threaded IRQ's. > 2.4 has lowlat + preempt patches applied
But you do have set your reference irq (soundcard) to the highest prio in the PREEMPT_RT case? I just ask to make sure. Also, the PK results can probably even be improved by having all irq handlers threaded except for the soundcard irq.
> > within 100 usec > CPU loop (%) Elapsed Time (sec) 2.4 > Test RT PK RT PK | CPU Elapsed > X 90.46 99.88 67 * 63+ | 97.20 70 > top 83.03 99.87 35 * 33+ | 97.48 29 > neto 91.69 97.57 360 * 320+* | 96.23 36 > neti 88.37 97.79 360 * 300+* | 95.86 41 > diskw 87.73 67.41 360 * 57+* | 77.64 29 > diskc 86.35 99.39 360 * 320+* | 84.12 77 > diskr 81.57 99.89 360 * 320+* | 90.66 86 > total 1902 1413 | 368 > [higher is better] [lower is better] > * wide variation in audio duration > + long stretch of audio duration "too fast" >
Flo
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