From: "Theodore Ts'o" <tytso@mit.edu>
To: Con Kolivas <kernel@kolivas.org>,
linux kernel mailing list <linux-kernel@vger.kernel.org>,
Dominik Brodowski <linux@dominikbrodowski.net>,
Daniel Petrini <d.pensator@gmail.com>,
Tony Lindgren <tony@atomide.com>,
vatsa@in.ibm.com, ck list <ck@vds.kolivas.org>,
Pavel Machek <pavel@ucw.cz>, Adam Belay <abelay@novell.com>,
Zwane Mwaikambo <zwane@arm.linux.org.uk>
Subject: Re: [PATCH] i386 No Idle HZ aka dynticks 051221
Date: Mon, 26 Dec 2005 13:56:46 -0500 [thread overview]
Message-ID: <20051226185645.GA7045@thunk.org> (raw)
In-Reply-To: <20051226025525.GA6697@thunk.org>
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
next prev parent reply other threads:[~2005-12-26 18:56 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-12-20 16:10 [PATCH] i386 No Idle HZ aka dynticks 051221 Con Kolivas
2005-12-20 17:27 ` Jan De Luyck
2005-12-20 19:39 ` Daniel Petrini
2005-12-20 20:46 ` Jan De Luyck
2005-12-25 17:16 ` Theodore Ts'o
2005-12-26 2:55 ` Theodore Ts'o
2005-12-26 18:47 ` Matthew Garrett
2005-12-26 18:56 ` Theodore Ts'o [this message]
2005-12-26 20:03 ` Dominik Brodowski
2005-12-26 20:38 ` Pavel Machek
2005-12-26 22:52 ` Theodore Ts'o
2005-12-26 23:27 ` Pavel Machek
2005-12-27 14:03 ` Pavel Machek
2005-12-27 14:22 ` C4 strangeness [was Re: [PATCH] i386 No Idle HZ aka dynticks 051221] Pavel Machek
2005-12-27 15:33 ` C4 non-strangeness [was: " Dominik Brodowski
2005-12-27 16:13 ` Pavel Machek
2005-12-26 22:19 ` [PATCH] i386 No Idle HZ aka dynticks 051221 Dominik Brodowski
2005-12-27 0:33 ` Theodore Ts'o
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