Re: [Results] [RFC PATCH v4 00/40] mm: Memory Power Management

From: Andi Kleen
Date: Wed Sep 25 2013 - 19:47:41 EST

> 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.


ak@xxxxxxxxxxxxxxx -- Speaking for myself only.
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