Pavel Machek wrote:
On Wed 2007-12-26 12:43:56, H. Peter Anvin wrote:
Oliver Neukum wrote:
Am Mittwoch, 26. Dezember 2007 19:56:59 schrieb H. Peter Anvin:
3) Network card that is either down
or can wake up system on any packet (and not loose too many packets)
This is the big crux I see. You're going to constantly wake up the
machine due to broadcast packets, and spend a lot of power just going in
and out of S3.
How many machines care a lot about saving power while they are connected
to an ethernet? Wlan might be more of a problem.
A lot of them should. An inordinate amount of machines sit there burning
power for no reason. You can argue that S3 isn't needed -- that nohz +
C3/C4 + turning off the screen would be enough, and that might be
+ legit.
NOHZ + C4 + turn off screen + turn off disk + turn off SATA is still
~8W on thinkpad x60.
S3 is ~1W.
That's quite significant difference.
(But yes, connected-to-ethernet is not most important use scenario.)
Pavel
Still... if we could get the desktops of the world down anywhere close
to that range when not used, it would be a huge win.
-hpa
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
