Messages in this thread | | | Subject | Re: [PATCH 0/6] ipc/sem.c: performance improvements, FIFO | From | Mike Galbraith <> | Date | Sat, 15 Jun 2013 10:36:20 +0200 |
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On Sat, 2013-06-15 at 09:30 +0200, Mike Galbraith wrote:
> Gee, just trying to flip back to a single semaphore lock mode if you had > to do the global wait thing fixed up -rt.
But master wants a sharper rock tossed at it, it's still unstable.
Result matrix: Thread 0: 11190947 Thread 1: 11743861 Thread 2: 10039223 Thread 3: 9776111 Thread 4: 9734815 Thread 5: 9941121 Thread 6: 11604118 Thread 7: 11716281 Thread 8: 9828587 Thread 9: 9589199 ...
And that's one of the better samples. Probably -rt sleepy locks help get us flipped back to single sem lock mode.
Hohum. On the bright side, -rt gets to scale better than mainline for a little while, that's kinda different.
-Mike
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