on 11/02/2012 15:35 Andriy Gapon said the following: > It seems that on modern CPUs the caches are either inclusive or some smart "as > if inclusive" caches. As a result, if two cores have a shared cache at any > level, then it should be relatively cheap to move a thread from one core to > the > other. E.g. if logical CPUs P0 and P1 have private L1 and L2 caches and a > shared L3 cache, then on modern processors it should be much cheaper to move a > thread from P0 to P1 than to some processor P2 that doesn't share the L3 cache
Having read this paper http://www.cs.uwaterloo.ca/~brecht/courses/856/Possible-Readings/multicore/cache-performance-x86-2009.pdf I think that I have been too optimistic about the smartness of caches in some processors... -- Andriy Gapon _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[email protected]"
