Le 17/01/2012 21:55, Lucas Stach a écrit :
Isn't it possible that the performance regression seen with xfer
disabled by default is caused by slow memory clock speed? Martin, you
saw only a 1% performance drop on your 8600 which is running with full
speed by default. Marcins nv92 is likely running at a much lower clock
speed. It would be nice to know if the perf regression is still as big
when running with full speed. We could stop caring about this when the
perf regression is not observable in the highest perf level.
Well, actually, the performance hit should be higher when running at a
highest memory clock since we context switch more often (there is no
logic here, just a personal experience).
Anyway, I tried again last week end at every possible speed and I
haven't been able to spot any performance hit *at all*.
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