On Sat, 2011-07-30 at 11:19 +0200, Mike Galbraith wrote: > On Fri, 2011-07-29 at 11:13 -0400, Steven Rostedt wrote: > > Hi Mike, > > > > Could you try this patch set out. Add the first patch and then > > run your tests. The first patch only adds benchmarking, and does not > > modify the scheduler algorithm. > > > > Do this: > > > > 1. apply first patch, build and boot > > 2. # mount -t debugfs nodev /sys/kernel/debug > > 3. # echo 0 > /sys/kernel/debug/cpupri; ./runtest; cat /sys/kernel/debug/cpupri > output > > > > The output will give you the contention of the vector locks in the > > cpupri algorithm. > > > > Then apply the second patch and do the same thing. > > > > Then apply the third patch and do the same thing. > > > > After that, could you send me the results of the output file for all > > three runs? The final patch should probably be the best overall > > results. > > These patches are RFC, so here's my Comment. Steven rocks. /me blushes! Thanks for testing! I'll redo the patches to remove the logging, and send them to you again. Could you return back a 'Tested-by' tag afterward. I'll also post the numbers from most of those that sent them to me. > > Below is what cyclictest has to say with the patches listed below > applied, and simulation model running on 56 isolated cores. > > The model squeaks once in a while with jitter ever so slightly over the > 30us squeak threshold, so I have yet more perturbation sources, but wrt > your patches, they are mana from heaven for largish boxen ;-) > > patches/ipc-sem-Optimize-update_queue-for-bulk-wakeup-calls > patches/ipc-sem-Move-wake_up_process-out-of-the-spinlock-section > patches/ipc-sem-Cacheline-align-the-ipc-spinlock-for-semaphores > patches/ipc-sem-Update-description-of-the-implementation > patches/ipc-sem-Use-ERR_CAST > patches/ipc-sem-Bugfix-for-semop-not-reporting-successful-operation > patches/ipc-sys_semctl-Fix-kernel-stack-leakage > patches/cpupri-2-3-nolock.patch > patches/cpupri-3-3-atomic.patch > patches/posix-timers-RCU-conversion > > cyclictest -Smqp 99 -D 30m; ./killit.sh Could you also post the results without the two cpupri patches? Thanks, -- Steve > > T: 0 ( 7362) P:99 I:1000 C:1799001 Min: 1 Act: 2 Avg: 1 Max: 19 > T: 1 ( 7363) P:99 I:1500 C:1199333 Min: 1 Act: 2 Avg: 1 Max: 4 > T: 2 ( 7364) P:99 I:2000 C: 899498 Min: 1 Act: 2 Avg: 1 Max: 4 > T: 3 ( 7365) P:99 I:2500 C: 719597 Min: 1 Act: 2 Avg: 1 Max: 4 > T: 4 ( 7366) P:99 I:3000 C: 599664 Min: 1 Act: 2 Avg: 1 Max: 4 > T: 5 ( 7367) P:99 I:3500 C: 513997 Min: 1 Act: 2 Avg: 1 Max: 5 > T: 6 ( 7368) P:99 I:4000 C: 449746 Min: 1 Act: 2 Avg: 1 Max: 4 > T: 7 ( 7369) P:99 I:4500 C: 399774 Min: 1 Act: 2 Avg: 1 Max: 4 > T: 8 ( 7370) P:99 I:5000 C: 359796 Min: 1 Act: 3 Avg: 2 Max: 5 > T: 9 ( 7371) P:99 I:5500 C: 327087 Min: 1 Act: 3 Avg: 2 Max: 7 > T:10 ( 7372) P:99 I:6000 C: 299829 Min: 1 Act: 3 Avg: 2 Max: 7 > T:11 ( 7373) P:99 I:6500 C: 276765 Min: 1 Act: 3 Avg: 2 Max: 13 > T:12 ( 7374) P:99 I:7000 C: 256995 Min: 1 Act: 3 Avg: 2 Max: 6 > T:13 ( 7375) P:99 I:7500 C: 239862 Min: 1 Act: 3 Avg: 2 Max: 10 > T:14 ( 7376) P:99 I:8000 C: 224870 Min: 1 Act: 2 Avg: 2 Max: 6 > T:15 ( 7377) P:99 I:8500 C: 211642 Min: 1 Act: 4 Avg: 2 Max: 7 > T:16 ( 7378) P:99 I:9000 C: 199884 Min: 1 Act: 3 Avg: 2 Max: 13 > T:17 ( 7379) P:99 I:9500 C: 189364 Min: 1 Act: 4 Avg: 2 Max: 6 > T:18 ( 7380) P:99 I:10000 C: 179895 Min: 1 Act: 3 Avg: 2 Max: 5 > T:19 ( 7381) P:99 I:10500 C: 171328 Min: 1 Act: 3 Avg: 2 Max: 9 > T:20 ( 7382) P:99 I:11000 C: 163540 Min: 1 Act: 4 Avg: 2 Max: 8 > T:21 ( 7383) P:99 I:11500 C: 156430 Min: 2 Act: 3 Avg: 2 Max: 7 > T:22 ( 7384) P:99 I:12000 C: 149912 Min: 2 Act: 3 Avg: 2 Max: 10 > T:23 ( 7385) P:99 I:12500 C: 143915 Min: 2 Act: 3 Avg: 3 Max: 8 > T:24 ( 7386) P:99 I:13000 C: 138380 Min: 2 Act: 4 Avg: 3 Max: 7 > T:25 ( 7387) P:99 I:13500 C: 133254 Min: 2 Act: 2 Avg: 3 Max: 7 > T:26 ( 7388) P:99 I:14000 C: 128495 Min: 1 Act: 3 Avg: 3 Max: 6 > T:27 ( 7389) P:99 I:14500 C: 124064 Min: 1 Act: 4 Avg: 3 Max: 10 > T:28 ( 7390) P:99 I:15000 C: 119928 Min: 2 Act: 4 Avg: 3 Max: 7 > T:29 ( 7391) P:99 I:15500 C: 116059 Min: 2 Act: 3 Avg: 2 Max: 6 > T:30 ( 7392) P:99 I:16000 C: 112432 Min: 2 Act: 4 Avg: 3 Max: 6 > T:31 ( 7393) P:99 I:16500 C: 109025 Min: 1 Act: 3 Avg: 3 Max: 6 > T:32 ( 7394) P:99 I:17000 C: 105818 Min: 2 Act: 4 Avg: 3 Max: 7 > T:33 ( 7395) P:99 I:17500 C: 102795 Min: 2 Act: 4 Avg: 3 Max: 7 > T:34 ( 7396) P:99 I:18000 C: 99939 Min: 1 Act: 3 Avg: 3 Max: 7 > T:35 ( 7397) P:99 I:18500 C: 97238 Min: 2 Act: 4 Avg: 3 Max: 8 > T:36 ( 7398) P:99 I:19000 C: 94679 Min: 2 Act: 3 Avg: 3 Max: 7 > T:37 ( 7399) P:99 I:19500 C: 92251 Min: 1 Act: 3 Avg: 3 Max: 8 > T:38 ( 7400) P:99 I:20000 C: 89945 Min: 2 Act: 4 Avg: 3 Max: 8 > T:39 ( 7401) P:99 I:20500 C: 87751 Min: 2 Act: 4 Avg: 3 Max: 13 > T:40 ( 7402) P:99 I:21000 C: 85661 Min: 2 Act: 3 Avg: 3 Max: 10 > T:41 ( 7403) P:99 I:21500 C: 83669 Min: 1 Act: 3 Avg: 3 Max: 7 > T:42 ( 7404) P:99 I:22000 C: 81767 Min: 2 Act: 3 Avg: 3 Max: 10 > T:43 ( 7405) P:99 I:22500 C: 79950 Min: 2 Act: 4 Avg: 3 Max: 9 > T:44 ( 7406) P:99 I:23000 C: 78212 Min: 1 Act: 2 Avg: 3 Max: 8 > T:45 ( 7407) P:99 I:23500 C: 76548 Min: 1 Act: 3 Avg: 3 Max: 7 > T:46 ( 7408) P:99 I:24000 C: 74953 Min: 1 Act: 3 Avg: 3 Max: 6 > T:47 ( 7409) P:99 I:24500 C: 73423 Min: 1 Act: 3 Avg: 3 Max: 6 > T:48 ( 7410) P:99 I:25000 C: 71955 Min: 2 Act: 4 Avg: 3 Max: 7 > T:49 ( 7411) P:99 I:25500 C: 70544 Min: 1 Act: 3 Avg: 3 Max: 6 > T:50 ( 7412) P:99 I:26000 C: 69187 Min: 2 Act: 4 Avg: 3 Max: 11 > T:51 ( 7413) P:99 I:26500 C: 67881 Min: 1 Act: 3 Avg: 3 Max: 6 > T:52 ( 7414) P:99 I:27000 C: 66624 Min: 2 Act: 3 Avg: 3 Max: 7 > T:53 ( 7415) P:99 I:27500 C: 65413 Min: 1 Act: 4 Avg: 3 Max: 6 > T:54 ( 7416) P:99 I:28000 C: 64245 Min: 2 Act: 4 Avg: 3 Max: 6 > T:55 ( 7417) P:99 I:28500 C: 63118 Min: 2 Act: 3 Avg: 3 Max: 6 > T:56 ( 7418) P:99 I:29000 C: 62029 Min: 2 Act: 3 Avg: 3 Max: 8 > T:57 ( 7419) P:99 I:29500 C: 60978 Min: 2 Act: 3 Avg: 2 Max: 5 > T:58 ( 7420) P:99 I:30000 C: 59961 Min: 2 Act: 3 Avg: 2 Max: 5 > T:59 ( 7421) P:99 I:30500 C: 58978 Min: 2 Act: 3 Avg: 2 Max: 5 > T:60 ( 7422) P:99 I:31000 C: 58027 Min: 2 Act: 3 Avg: 3 Max: 10 > T:61 ( 7423) P:99 I:31500 C: 57106 Min: 2 Act: 3 Avg: 3 Max: 9 > T:62 ( 7424) P:99 I:32000 C: 56213 Min: 2 Act: 2 Avg: 2 Max: 5 > T:63 ( 7425) P:99 I:32500 C: 55349 Min: 2 Act: 5 Avg: 3 Max: 6 > -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
