Impacts of disabling Automatic Power Management
Richard A. Smith
richard at laptop.org
Wed Feb 1 17:09:13 EST 2012
On 01/31/2012 11:43 PM, Paul Fox wrote:
> sridhar wrote:
> > We are considering disabling Automatic Power Management because of its
> > impact on collaboration and 3G connectivity.
> > What kind of battery life can we expect from an XO-1.5 with Automatic
> > Power Management disabled as opposed to enabled? I understand that
> > this can vary wildly with usage, but is there an average estimate?
> he's on a very long plane flight, but i'll try and channel richard:
> "it depends."
> how did i do? :-)
You have learned well.
Sirdhar: Unfortunately theres no way we can answer your question ( or
even make a SWAG) without known how much idleness is in your normal
workload. Automatic Power Management only makes a big difference if
there is a lot of time spent idle. If you are running Tam-Tam the
entire time then turning off aggressive suspend/resume will make zero
powerd tracks this though so if you can collect some powerd logs from
some of your users then we can make a guess at figuring out what your
impact will be.
powerd logs are located in the ~olcp/power-logs directory. Copy all the
files in there off of several machines that have been used in the
classroom and send them to me and we can take a look at what sort of
profile you have.
What build are you basing your images off of?
Richard A. Smith <richard at laptop.org>
One Laptop per Child
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