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The PowerClamp driverThe PowerClamp driverPosted Mar 7, 2013 23:30 UTC (Thu) by dlang (✭ supporter ✭, #313)In reply to: The PowerClamp driver by dgm Parent article: The PowerClamp driver
and remember that even memory access is an external event that is significantly slower than the CPU, so if what you are doing is a small amount of computation on a large amount of memory, you may be able to do it in the same amount of time with a much slower CPU.
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The PowerClamp driver Posted Mar 11, 2013 13:06 UTC (Mon) by ssam (subscriber, #46587) [Link]
if i am running a process that is limited by memory bandwidth, wont the CPU be spend lots of time idle, and so reducing the power consumption already? Can the CPU sleep while it is waiting for something to be fetched from RAM?
The PowerClamp driver Posted Mar 11, 2013 20:28 UTC (Mon) by dlang (✭ supporter ✭, #313) [Link]
not really, it takes a long time for the processor to go to sleep and wake up again, long enough that it's frequently better for the processor to idle at high speed rather than go into sleep mode.
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