On Tuesday 08 June 2010 08:21 PM, Chidambaram, Praveen wrote:
How are you measuring the power? It also depends on where you are
measuring the power?
Thanks praveen. I have removed the battery and measuring the DC current
[after ac-dc adaptor] drawn by device. But is it not expected to draw
less current when frequency is reduced ? or my instrument is not precise
enough (now mA accuracy) to detect the changes ?
Regards,
Shankar
If you are not running any loads, the processor is going to be in idle
(waiting for interrupts) and thereby will consume the same power in
all scenarios.
Praveen
On Tue, 8 Jun 2010 2:46am, Shankar Ganesh<shankarganeshk@xxxxxxxxx> wrote:
Hi All,
I have Ubuntu Karmic ( Linux Kernel 2.6.31) installed on my netbook[
ASUS Eeepc - N450 ]. I tried to calculate power variation for ondemand
and performance governors at idle state, after booting and no
background jobs/loads running. But by switching between these
governors, i could observe only frequency change, but the power
consumed by the device is almost same. Is there any important point i
am missing here ? I was expecting that the power consumption will be
reduced on switching to ondemand governor from performance.
Thanks,
Shankar
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