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Date: Sat, 01 Jun 2013 13:04:18 +0200 From: Mike Galbraith <efault@....de> To: Manfred Spraul <manfred@...orfullife.com> Cc: Rik van Riel <riel@...hat.com>, LKML <linux-kernel@...r.kernel.org>, Andrew Morton <akpm@...ux-foundation.org>, Davidlohr Bueso <davidlohr.bueso@...com>, hhuang@...hat.com, Linus Torvalds <torvalds@...ux-foundation.org> Subject: Re: [PATCH 2/4] ipc/sem: seperate wait-for-zero and alter tasks into seperate queues On Sat, 2013-06-01 at 12:03 +0200, Mike Galbraith wrote: > -rtm is with our patches added, -rt is backport without. Now same tree, turn off PREEMPT_FULL so the kernel is plain old PREEMPT. Again, -rt is without your patches, -rtm with, followed by backing out all ipc backports to end up at pre scalability series to show what the set gains on this box. vogelweide:/abuild/mike/:[0]# uname -r 3.8.13-rt9-rt vogelweide:/abuild/mike/:[0]# ./semop-multi 256 64 cpus 64, threads: 256, semaphores: 64, test duration: 30 secs total operations: 19102372, ops/sec 636745 vogelweide:/abuild/mike/:[0]# ./semop-multi 256 64 cpus 64, threads: 256, semaphores: 64, test duration: 30 secs total operations: 19877668, ops/sec 662588 vogelweide:/abuild/mike/:[0]# ./semop-multi 256 64 cpus 64, threads: 256, semaphores: 64, test duration: 30 secs total operations: 19610632, ops/sec 653687 vogelweide:/abuild/mike/:[0]# vogelweide:/abuild/mike/:[0]# ./osim 64 256 1000000 0 0 osim <sems> <tasks> <loops> <busy-in> <busy-out> osim: using a semaphore array with 64 semaphores. osim: using 256 tasks. osim: each thread loops 3907 times osim: each thread busyloops 0 loops outside and 0 loops inside. total execution time: 1.893317 seconds for 1000192 loops per loop execution time: 1.892 usec vogelweide:/abuild/mike/:[0]# ./osim 64 256 1000000 0 0 osim <sems> <tasks> <loops> <busy-in> <busy-out> osim: using a semaphore array with 64 semaphores. osim: using 256 tasks. osim: each thread loops 3907 times osim: each thread busyloops 0 loops outside and 0 loops inside. total execution time: 1.976055 seconds for 1000192 loops per loop execution time: 1.975 usec vogelweide:/abuild/mike/:[0]# ./osim 64 256 1000000 0 0 osim <sems> <tasks> <loops> <busy-in> <busy-out> osim: using a semaphore array with 64 semaphores. osim: using 256 tasks. osim: each thread loops 3907 times osim: each thread busyloops 0 loops outside and 0 loops inside. total execution time: 1.651162 seconds for 1000192 loops per loop execution time: 1.650 usec vogelweide:/abuild/mike/:[0]# uname -r 3.8.13-rt9-rtm vogelweide:/abuild/mike/:[0]# ./semop-multi 256 64 cpus 64, threads: 256, semaphores: 64, test duration: 30 secs total operations: 22053968, ops/sec 735132 vogelweide:/abuild/mike/:[0]# ./semop-multi 256 64 cpus 64, threads: 256, semaphores: 64, test duration: 30 secs total operations: 21295310, ops/sec 709843 vogelweide:/abuild/mike/:[0]# ./semop-multi 256 64 cpus 64, threads: 256, semaphores: 64, test duration: 30 secs total operations: 21458002, ops/sec 715266 vogelweide:/abuild/mike/:[0]# vogelweide:/abuild/mike/:[0]# ./osim 64 256 1000000 0 0 osim <sems> <tasks> <loops> <busy-in> <busy-out> osim: using a semaphore array with 64 semaphores. osim: using 256 tasks. osim: each thread loops 3907 times osim: each thread busyloops 0 loops outside and 0 loops inside. total execution time: 1.858765 seconds for 1000192 loops per loop execution time: 1.858 usec vogelweide:/abuild/mike/:[0]# ./osim 64 256 1000000 0 0 osim <sems> <tasks> <loops> <busy-in> <busy-out> osim: using a semaphore array with 64 semaphores. osim: using 256 tasks. osim: each thread loops 3907 times osim: each thread busyloops 0 loops outside and 0 loops inside. total execution time: 1.806943 seconds for 1000192 loops per loop execution time: 1.806 usec vogelweide:/abuild/mike/:[0]# ./osim 64 256 1000000 0 0 osim <sems> <tasks> <loops> <busy-in> <busy-out> osim: using a semaphore array with 64 semaphores. osim: using 256 tasks. osim: each thread loops 3907 times osim: each thread busyloops 0 loops outside and 0 loops inside. total execution time: 1.854004 seconds for 1000192 loops per loop execution time: 1.853 usec All ipc patches backed out. vogelweide:/abuild/mike/:[0]# ./semop-multi 256 64 cpus 64, threads: 256, semaphores: 64, test duration: 30 secs total operations: 8885026, ops/sec 296167 vogelweide:/abuild/mike/:[0]# ./semop-multi 256 64 cpus 64, threads: 256, semaphores: 64, test duration: 30 secs total operations: 8791676, ops/sec 293055 vogelweide:/abuild/mike/:[0]# ./semop-multi 256 64 cpus 64, threads: 256, semaphores: 64, test duration: 30 secs total operations: 8301092, ops/sec 276703 vogelweide:/abuild/mike/:[0]# vogelweide:/abuild/mike/:[0]# ./osim 64 256 1000000 0 0 osim <sems> <tasks> <loops> <busy-in> <busy-out> osim: using a semaphore array with 64 semaphores. osim: using 256 tasks. osim: each thread loops 3907 times osim: each thread busyloops 0 loops outside and 0 loops inside. total execution time: 10.750488 seconds for 1000192 loops per loop execution time: 10.748 usec vogelweide:/abuild/mike/:[0]# ./osim 64 256 1000000 0 0 osim <sems> <tasks> <loops> <busy-in> <busy-out> osim: using a semaphore array with 64 semaphores. osim: using 256 tasks. osim: each thread loops 3907 times osim: each thread busyloops 0 loops outside and 0 loops inside. total execution time: 10.737264 seconds for 1000192 loops per loop execution time: 10.735 usec vogelweide:/abuild/mike/:[0]# ./osim 64 256 1000000 0 0 osim <sems> <tasks> <loops> <busy-in> <busy-out> osim: using a semaphore array with 64 semaphores. osim: using 256 tasks. osim: each thread loops 3907 times osim: each thread busyloops 0 loops outside and 0 loops inside. total execution time: 10.756395 seconds for 1000192 loops per loop execution time: 10.754 usec -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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