lkml.org 
[lkml]   [2006]   [Sep]   [6]   [last100]   RSS Feed
Views: [more markup]  [less markup]  [headers]  [forward] 
 
Messages in this thread
/
DateWed, 6 Sep 2006 12:54:15 +0200
FromPavel Machek <>
SubjectRe: [RFC][PATCH 2/2] ACPI: handle timer ticks proactively
Hi!

> > > Okay, just to get you some feedback:
> > > 
> > > It seems to change things a _lot_. Power consumption with usb modules
> > > loaded went from 14315mW to 13800mW -- that is huge
> > > deal. Unfortunately something strange is going on: with stock kernel,
> > > power consumption is mostly constant. With your patch, it varies a
> > > lot, at 2 second timescale.
> > > 
> > > Power consumption with usb unloaded (only way to get reasonable power
> > > on x60) went from stable 10450mW to  something rapidly changing, and
> > > probably even worse than original:
> > 
> > I also noticed that with your patch, bus master activity tends to be constant?!
> 
> Is this the case even when userspace touches the disk?  On my hardware I
> see a constant flow of short BM activity bursts.

Disk was active (like once 5 seconds some small access)...
									Pavel
-- 
Thanks, Sharp!
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-09-06 10:57    [W:0.220 / U:0.090 seconds]
©2003-2008 Jasper Spaans