![]() | |||||||||||||
Messages in this thread |
Joel Schopp <jschopp@austin.ibm.com> wrote: > > This is the second pass at optimizing the fastpath for the new mutex subsystem > on PowerPC. I think it is ready to be included in the series with the other > mutex patches now. Tested on a 4 core (2 SMT threads/core) Power5 machine with > gcc 3.3.2. > > Test results from synchro-test.ko: > > All tests run for default 5 seconds > Threads semaphores mutexes mutexes+attached > 1 63,465,364 58,404,630 62,109,571 > 4 58,424,282 35,541,297 37,820,794 > 8 40,731,668 35,541,297 40,281,768 > 16 38,372,769 37,256,298 41,751,764 > 32 38,406,895 36,933,675 38,731,571 > 64 37,232,017 36,222,480 40,766,379 > Doens't this mean that the sped-up mutexes are still slower than semaphores? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
| Last update: 2006-01-07 22:41 [from the cache] ©2003-2008 | |||||||||||||