From: Linus Torvalds <torvalds@linux-foundation.org>
To: Arjan van de Ven <arjan@infradead.org>
Cc: Ingo Molnar <mingo@elte.hu>,
tytso@mit.edu, Brian Swetland <swetland@google.com>,
Neil Brown <neilb@suse.de>, Arve Hj?nnev?g <arve@android.com>,
Thomas Gleixner <tglx@linutronix.de>,
"Rafael J. Wysocki" <rjw@sisk.pl>,
Alan Stern <stern@rowland.harvard.edu>,
Felipe Balbi <felipe.balbi@nokia.com>,
Peter Zijlstra <peterz@infradead.org>,
LKML <linux-kernel@vger.kernel.org>,
Florian Mickler <florian@mickler.org>,
Linux OMAP Mailing List <linux-omap@vger.kernel.org>,
Linux PM <linux-pm@lists.linux-foundation.org>,
Alan Cox <alan@lxorguk.ukuu.org.uk>,
James Bottomley <James.Bottomley@suse.de>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Kevin Hilman <khilman@deeprootsystems.com>,
"H. Peter Anvin" <hpa@zytor.com>
Subject: Re: suspend blockers & Android integration
Date: Thu, 3 Jun 2010 21:46:01 -0700 (PDT) [thread overview]
Message-ID: <alpine.LFD.2.00.1006032141060.8175@i5.linux-foundation.org> (raw)
In-Reply-To: <20100603204521.09808a7f@infradead.org>
On Thu, 3 Jun 2010, Arjan van de Ven wrote:
>
> And because there's then no power saving (but a performance cost), it's
> actually a negative for battery life/total energy.
Including the UP optimizations we do (ie lock prefix removal)? It's
possible that I'm just biased by benchmarks, and it's true that Intel has
been getting lots better, but the locking costs are very noticeable
performance-wise on some benchmarks.
And several CPU's have been held back from going into deepest sleep states
by stupid firmware and/or platform bugs.
But hey, if it's not going to help, and people have tried it, I guess I'll
have to believe it.
Linus
next prev parent reply other threads:[~2010-06-04 4:51 UTC|newest]
Thread overview: 196+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-03 19:30 Ingo Molnar
2010-06-03 19:50 ` Brian Swetland
2010-06-04 7:57 ` Ingo Molnar
2010-06-04 8:29 ` Brian Swetland
2010-06-04 8:55 ` Ingo Molnar
2010-06-04 9:03 ` Pekka Enberg
2010-06-04 9:08 ` Brian Swetland
2010-06-04 9:59 ` Ingo Molnar
2010-06-04 10:09 ` Brian Swetland
2010-06-04 14:24 ` James Bottomley
2010-06-04 15:07 ` Florian Mickler
2010-06-06 8:04 ` david
2010-06-10 13:58 ` Pavel Machek
2010-06-11 4:21 ` [linux-pm] " David Brownell
2010-06-11 14:28 ` James Bottomley
2010-06-11 14:46 ` Alan Stern
2010-06-11 15:01 ` Mark Brown
2010-06-11 15:02 ` James Bottomley
2010-06-11 20:48 ` Alan Stern
2010-06-11 21:04 ` James Bottomley
2010-06-12 17:10 ` Mark Brown
2010-06-12 2:43 ` David Brownell
2010-06-11 14:42 ` Alan Stern
[not found] ` <20100603231153.GA11302@elte.hu>
2010-06-03 23:23 ` Ingo Molnar
2010-06-03 23:37 ` Linus Torvalds
2010-06-03 23:46 ` Ingo Molnar
2010-06-04 2:16 ` Linus Torvalds
2010-06-04 2:26 ` Linus Torvalds
2010-06-04 3:45 ` Arjan van de Ven
2010-06-04 4:46 ` Linus Torvalds [this message]
2010-06-04 10:42 ` Andi Kleen
2010-06-04 8:15 ` Ingo Molnar
2010-06-06 8:16 ` david
2010-06-06 8:23 ` david
2010-06-04 3:45 ` Arve Hjønnevåg
2010-06-04 6:22 ` Ingo Molnar
2010-06-04 8:11 ` Ingo Molnar
2010-06-05 20:37 ` Florian Mickler
2010-06-04 0:39 ` Ingo Molnar
2010-06-04 14:50 ` Alan Stern
2010-06-04 4:38 ` Neil Brown
2010-06-04 4:54 ` Arve Hjønnevåg
2010-06-04 7:13 ` Ingo Molnar
2010-06-04 7:37 ` Arve Hjønnevåg
2010-06-04 8:34 ` Ingo Molnar
2010-06-04 8:56 ` Arve Hjønnevåg
2010-06-04 12:06 ` Peter Zijlstra
2010-06-05 0:10 ` Arve Hjønnevåg
2010-06-05 9:54 ` Peter Zijlstra
2010-06-05 16:28 ` Arjan van de Ven
2010-06-05 21:26 ` Arve Hjønnevåg
2010-06-05 22:23 ` Arjan van de Ven
2010-06-05 22:26 ` Brian Swetland
2010-06-05 22:48 ` Arjan van de Ven
2010-06-05 23:45 ` Thomas Gleixner
2010-06-06 0:34 ` Arve Hjønnevåg
2010-06-05 22:52 ` Rafael J. Wysocki
2010-06-05 22:39 ` Arve Hjønnevåg
2010-06-05 23:34 ` Arjan van de Ven
2010-06-06 0:02 ` Arve Hjønnevåg
2010-06-06 11:18 ` Felipe Contreras
2010-06-06 11:26 ` david
2010-06-06 7:52 ` [linux-pm] " Vitaly Wool
2010-06-06 8:20 ` Brian Swetland
2010-06-06 8:32 ` Vitaly Wool
2010-06-06 9:21 ` Brian Swetland
2010-06-06 9:56 ` david
2010-06-06 11:11 ` Felipe Contreras
2010-06-06 10:00 ` Vitaly Wool
2010-06-06 10:12 ` david
2010-06-06 10:19 ` Vitaly Wool
2010-06-06 10:49 ` Florian Mickler
2010-06-06 10:57 ` Vitaly Wool
2010-06-06 11:14 ` david
2010-06-07 12:16 ` Florian Mickler
2010-06-09 1:14 ` david
2010-06-09 3:46 ` Linus Torvalds
2010-06-09 7:43 ` Felipe Contreras
2010-06-09 9:40 ` Rafael J. Wysocki
2010-06-09 22:04 ` Neil Brown
2010-06-10 8:59 ` Rafael J. Wysocki
2010-06-10 12:00 ` Neil Brown
2010-06-10 16:06 ` Rafael J. Wysocki
2010-06-10 13:57 ` Mark Brown
2010-06-10 15:46 ` Rafael J. Wysocki
2010-06-10 19:01 ` Mark Brown
2010-06-10 14:47 ` Alan Stern
2010-06-10 15:44 ` Rafael J. Wysocki
2010-06-06 10:46 ` Florian Mickler
2010-06-06 11:05 ` Alan Cox
2010-06-06 13:34 ` Matthew Garrett
2010-06-06 14:31 ` James Bottomley
2010-06-06 15:46 ` Thomas Gleixner
2010-06-06 17:08 ` James Bottomley
2010-06-06 18:04 ` Thomas Gleixner
2010-06-06 18:44 ` Brian Swetland
2010-06-06 19:26 ` Thomas Gleixner
2010-06-06 19:05 ` Christoph Hellwig
2010-06-06 19:15 ` Brian Swetland
2010-06-06 19:24 ` Christoph Hellwig
2010-06-06 19:58 ` Brian Swetland
2010-06-06 22:26 ` Thomas Gleixner
2010-06-07 8:00 ` Christoph Hellwig
2010-06-07 8:03 ` Christoph Hellwig
2010-06-07 8:16 ` Brian Swetland
2010-06-07 13:20 ` Peter Zijlstra
2010-06-07 18:40 ` David Brownell
2010-06-07 23:17 ` Linus Walleij
2010-06-07 23:37 ` Brian Swetland
2010-06-08 2:15 ` Valdis.Kletnieks
2010-06-09 12:33 ` Mark Brown
2010-07-09 19:11 ` HTC Dream drivers was " Pavel Machek
2010-06-06 13:31 ` Matthew Garrett
2010-06-06 15:26 ` Vitaly Wool
2010-06-06 15:29 ` Matthew Garrett
2010-06-06 15:47 ` Vitaly Wool
2010-06-06 16:43 ` Matthew Garrett
2010-06-06 17:21 ` Vitaly Wool
2010-06-06 17:31 ` Matthew Garrett
[not found] ` <AANLkTimCd4AUk1wBBcnX9WKvpKA6sNfs8-4Qqb5wMaNH@mail.gmail.com>
2010-06-06 17:48 ` Matthew Garrett
2010-06-06 19:01 ` Rafael J. Wysocki
2010-06-07 10:25 ` Felipe Contreras
2010-06-07 13:01 ` Florian Mickler
2010-06-07 0:01 ` Alan Stern
2010-06-07 1:07 ` [linux-pm] suspend blockers & Android integrationy Thomas Gleixner
2010-06-07 14:42 ` Alan Stern
2010-06-07 15:49 ` Thomas Gleixner
2010-06-07 15:56 ` [linux-pm] suspend blockers & Android integration Florian Mickler
2010-06-08 0:57 ` Arve Hjønnevåg
2010-06-08 1:13 ` Alan Stern
2010-06-04 9:43 ` Peter Zijlstra
2010-06-04 9:54 ` Peter Zijlstra
2010-06-04 10:03 ` Ingo Molnar
2010-06-04 10:08 ` Peter Zijlstra
2010-06-04 10:11 ` Brian Swetland
2010-06-04 10:11 ` Thomas Gleixner
2010-06-04 10:13 ` Peter Zijlstra
2010-06-04 23:38 ` Rafael J. Wysocki
2010-06-05 0:05 ` Thomas Gleixner
2010-06-05 0:39 ` Arve Hjønnevåg
2010-06-05 1:18 ` Matt Helsley
2010-06-05 5:35 ` Arve Hjønnevåg
2010-06-05 18:25 ` Rafael J. Wysocki
2010-06-05 22:10 ` Arve Hjønnevåg
2010-06-05 23:03 ` Rafael J. Wysocki
2010-06-06 1:03 ` Arve Hjønnevåg
2010-06-06 2:49 ` Alan Stern
2010-06-06 11:09 ` [linux-pm] " Alan Stern
2010-06-08 0:23 ` Arve Hjønnevåg
2010-06-08 1:09 ` Alan Stern
2010-06-08 1:31 ` Arve Hjønnevåg
2010-06-08 2:32 ` Alan Stern
2010-06-08 3:05 ` Arve Hjønnevåg
2010-06-08 10:19 ` Florian Mickler
2010-06-08 14:50 ` Alan Stern
2010-06-09 1:48 ` Arve Hjønnevåg
2010-06-09 15:29 ` Alan Stern
2010-06-09 23:42 ` Arve Hjønnevåg
2010-06-10 4:21 ` david
2010-06-10 4:51 ` Arve Hjønnevåg
2010-06-10 5:10 ` Neil Brown
2010-06-10 14:39 ` Alan Stern
2010-06-10 14:28 ` Alan Stern
2010-06-10 23:02 ` Arve Hjønnevåg
2010-06-11 1:44 ` Alan Stern
2010-06-11 3:16 ` Arve Hjønnevåg
2010-06-11 14:33 ` Alan Stern
2010-06-11 22:18 ` Arve Hjønnevåg
2010-06-12 15:22 ` Alan Stern
2010-06-07 23:16 ` Arve Hjønnevåg
2010-06-06 13:29 ` Rafael J. Wysocki
2010-06-05 1:33 ` Thomas Gleixner
2010-06-05 5:23 ` Arve Hjønnevåg
2010-06-05 16:47 ` Thomas Gleixner
2010-06-05 21:47 ` Arve Hjønnevåg
2010-06-05 22:11 ` Thomas Gleixner
2010-06-05 23:21 ` Arve Hjønnevåg
2010-06-05 23:39 ` Rafael J. Wysocki
2010-06-06 0:04 ` Thomas Gleixner
2010-06-06 1:16 ` Arve Hjønnevåg
2010-06-06 10:36 ` Thomas Gleixner
2010-06-06 14:43 ` Matt Helsley
2010-06-08 0:45 ` Arve Hjønnevåg
2010-06-07 23:34 ` Arve Hjønnevåg
2010-06-06 10:56 ` Thomas Gleixner
2010-06-08 0:05 ` Arve Hjønnevåg
2010-06-06 0:19 ` Thomas Gleixner
2010-06-06 1:24 ` Arve Hjønnevåg
2010-06-06 0:32 ` Thomas Gleixner
2010-06-06 1:45 ` Arve Hjønnevåg
2010-06-06 10:01 ` Thomas Gleixner
2010-06-05 22:44 ` Rafael J. Wysocki
2010-06-05 23:56 ` Arve Hjønnevåg
2010-06-06 13:55 ` Rafael J. Wysocki
2010-06-08 0:39 ` Arve Hjønnevåg
2010-06-08 9:11 ` Rafael J. Wysocki
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