Subject: Re: uvm_pageidlezero()
To: Hubert Feyrer <hubert@feyrer.de>
From: Michael <macallan18@earthlink.net>
List: tech-kern
Date: 06/20/2005 20:50:45
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Hello,

> > So - is it really necessary to run uvm_pageidlezero in the idle
> > loop?
> > Should I call it when CPU sleep mode isn't available or disabled?
>=20
> I think it would be nice to have that as a sysctl'able knob for all=20
> platforms, so they can decide for a power-conserving laptop (no
> zeroing), or a server that wants to have zeroed pages readily
> available.

Agreed. But in this case (SPARCbook 3 series) the hardware to put the
CPU to sleep is found only in laptops ( as far as I know at least) which
like to overheat so enabling it unconditionally when we find it is
probably a good idea.

Or has anyone ever seen an /obio/clk-crtl in another sun4m-class
machine?

have fun
Michael

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