Con Kolivas <[EMAIL PROTECTED]> writes: >>>Second the patch I sent you is fine for testing; I was hoping you >>>would try it. What you can't do with it is spawn lots of userspace >>>apps safely SCHED_ISO with it - it will crash, but it not take down >>>your hard disk. I've had significantly better results with that >>>patch so far. Then we cn take it from there.
> It was for mm2, but should patch on an iso2 patched kernel. It does apply to 2.6.11-rc1 (on top of your previous patch) with just some minor chunk offsets. The results are excellent... http://www.joq.us/jack/benchmarks/sched-isoprio http://www.joq.us/jack/benchmarks/sched-isoprio+compile I updated the summary information to include them... http://www.joq.us/jack/benchmarks/cycle_max.log http://www.joq.us/jack/benchmarks/delay_max.log http://www.joq.us/jack/benchmarks/xrun_count.log These results are indistinguishable from SCHED_FIFO... ...benchmarks/sched-fifo... Delay Maximum . . . . . . . . : 347 usecs Delay Maximum . . . . . . . . : 277 usecs Delay Maximum . . . . . . . . : 246 usecs ...benchmarks/sched-fifo+compile... Delay Maximum . . . . . . . . : 285 usecs Delay Maximum . . . . . . . . : 269 usecs Delay Maximum . . . . . . . . : 277 usecs Delay Maximum . . . . . . . . : 569 usecs Delay Maximum . . . . . . . . : 461 usecs ...benchmarks/sched-isoprio... Delay Maximum . . . . . . . . : 199 usecs Delay Maximum . . . . . . . . : 261 usecs Delay Maximum . . . . . . . . : 305 usecs ...benchmarks/sched-isoprio+compile... Delay Maximum . . . . . . . . : 405 usecs Delay Maximum . . . . . . . . : 286 usecs Delay Maximum . . . . . . . . : 579 usecs ...benchmarks/sched-iso... Delay Maximum . . . . . . . . : 21410 usecs Delay Maximum . . . . . . . . : 36830 usecs Delay Maximum . . . . . . . . : 4062 usecs ...benchmarks/sched-iso+compile... Delay Maximum . . . . . . . . : 98909 usecs Delay Maximum . . . . . . . . : 39414 usecs Delay Maximum . . . . . . . . : 40294 usecs Delay Maximum . . . . . . . . : 217192 usecs Delay Maximum . . . . . . . . : 156989 usecs So, thread priorities clearly do matter, even in this relatively simple test. It's amazing how much is going on there, when you look at it closely. Is there any chance of these patches working with Ingo's latest RP patchset? I just downloaded realtime-preempt-2.6.11-rc2-V0.7.36-02, but haven't built it yet. -- joq - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
