On 9/25/2013 4:47 PM, Andi Kleen wrote:
Also, the changelogs don't appear to discuss one obvious downside: the
latency incurred in bringing a bank out of one of the low-power states
and back into full operation. Please do discuss and quantify that to
the best of your knowledge.
On Sandy Bridge the memry wakeup overhead is really small. It's on by default
in most setups today.
yet grouping is often defeated (in current systems) due to hw level interleaving ;-(
sometimes that's a bios setting though.
in internal experimental bioses we've been able to observe a "swing" of a few watts
(not with these patches but with some other tricks)...
I'm curious to see how these patches do for Srivatsa
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@xxxxxxxxx. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>