Re: [PATCH] i386 No Idle HZ aka dynticks 051221

From: Theodore Ts'o
Date: Mon Dec 26 2005 - 13:55:44 EST


On Sun, Dec 25, 2005 at 09:55:26PM -0500, Theodore Ts'o wrote:
> With dyntick enabled, the laptop never enters the C4 state, but
> instead bounces back and forth between C2 and C3 (and I notice that we
> never enter C1 state, even when the CPU is completely pegged, but
> that's true with or without dyntick).
>
> If dyntick is enabled, the laptop enters C4 state, which presumably is
^^^^^^^ this should be "disabled"
> a deeper, more power saving state, and it appears power saving effects
> of dyntick is getting balanced off against the fact that C4 is never
> getting entered when it is enabled.

My apologies for any confusion, and for not doing better copy-editing
before hitting the send butter.

-Ted

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