The kernel has a mode for active control of the clock speed to provide power management, but it is not set on as a default.
I don't know if enabling it will work on this architecture.. maybe someone else knows?

Ben


-----Original Message-----
From: gumstix-users-bounces@lists.sourceforge.net on behalf of Robert Spanton
Sent: Fri 29/06/2007 11:31
To: General mailing list for gumstix users.
Subject: Re: [Gumstix-users] The kernel already executes some kind of idleinstruction to reduces power usage?

On 29/06/07, LIN QIU <nlv19665@natlab.research.philips.com> wrote:
> I just found someone discussed this before in the archive of mailing
> list. Does anyone have some knowledge or prove that the kernel had
> already executes some kind of idle instruction to reduces power usage?
> My gumstix consumes 0.18-0.22mA when doing nothing(wifi off).

That's quite surprising, considering the refresh current for the RAM
is ~5mA.  What type of Gumstix are you using?

Rob

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