Messages in this thread | | | Date | Thu, 26 May 2011 20:31:11 +0100 | From | Matthew Garrett <> | Subject | Re: [rfc] Ignore Fsync Calls in Laptop_Mode |
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On Thu, May 26, 2011 at 09:01:49AM +0200, D. Jansen wrote:
> Exactly. 0.5 Watts is a lot of energy on a modern system. And on some > systems with proper link power management in sata and pcie it will be > even higher (~1 Watt I think). Think not only of the work that will be > lost if the system crashes (unlikely), but also of the work that could > never be done because the battery was gone (a certainty).
I don't think link power management is relevant. The hysteresis there is sufficiently low that it's only going to make a difference during the point where you're actually throwing data across the link.
-- Matthew Garrett | mjg59@srcf.ucam.org
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