From: Philip Langdale <philipl@overt.org>
To: Matthew Garrett <mjg59@srcf.ucam.org>
Cc: Len Brown <lenb@kernel.org>, Jeff Garrett <jeff@jgarrett.org>,
Andi Kleen <andi@firstfloor.org>,
linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org
Subject: Re: acpi_idle: Very idle Core i7 machine never enters C3
Date: Fri, 30 Apr 2010 14:35:02 -0400 [thread overview]
Message-ID: <d7f2dd35a4361e5156079278543769a0@localhost> (raw)
In-Reply-To: <20100430174447.GA14889@srcf.ucam.org>
On Fri, 30 Apr 2010 18:44:47 +0100, Matthew Garrett <mjg59@srcf.ucam.org>
wrote:
> On Fri, Apr 30, 2010 at 12:25:44PM -0400, Len Brown wrote:
>
>> I am hopeful that the "right thin to do" is to not look at bm-status
>> and that perhaps there is a bug where we are looking at it
>> "by mistake".
>
> https://patchwork.kernel.org/patch/58962/ - it seems to be a win.
Indeed. This patch does solve the C6 problem. I'm not in a position to
speak about whether there's any undesirable I/O latency, but it
passes the basic sanity check.
I have filed https://bugzilla.kernel.org/show_bug.cgi?id=15886 with
my acpi dump - assuming that's still useful.
--phil
next prev parent reply other threads:[~2010-04-30 18:36 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-26 8:47 acpi_idle: Very idle Core i7 machine never enters C3 Jeff Garrett
2010-01-26 12:41 ` peng huang
2010-01-26 14:59 ` Jeff Garrett
2010-01-27 13:27 ` peng huang
2010-02-05 16:22 ` Jeff Garrett
2010-01-26 21:45 ` Andi Kleen
2010-02-05 16:09 ` Jeff Garrett
2010-02-05 17:45 ` Len Brown
2010-02-05 20:53 ` Jeff Garrett
2010-04-27 2:40 ` Philip Langdale
2010-04-27 7:26 ` Len Brown
2010-04-27 15:41 ` Philip Langdale
2010-04-27 12:47 ` Jeff Garrett
2010-04-30 14:57 ` Philip Langdale
2010-04-30 16:25 ` Len Brown
2010-04-30 17:44 ` Matthew Garrett
2010-04-30 18:35 ` Philip Langdale [this message]
2010-05-25 5:43 ` Len Brown
2010-05-25 5:59 ` Yu, Luming
2010-05-25 12:39 ` Matthew Garrett
2010-05-25 12:43 ` Matthew Garrett
2010-05-25 15:33 ` Len Brown
2010-05-25 18:55 ` Matthew Garrett
2010-07-21 21:31 ` [PATCH] ACPI: make acpi_idle Nehalem-aware Len Brown
2010-07-22 0:53 ` Venkatesh Pallipadi
2010-07-22 7:47 ` Andi Kleen
2010-07-22 15:57 ` Len Brown
2010-07-22 21:21 ` [PATCH] ACPI: skip checking BM_STS if the BIOS doesn't ask for it Len Brown
2010-07-22 21:40 ` [PATCH] ACPI: create "processor.bm_check_disable" boot param Len Brown
2010-07-26 7:24 ` Andi Kleen
2010-07-27 0:19 ` Len Brown
2010-07-27 11:28 ` Andi Kleen
2010-07-28 18:58 ` Len Brown
2010-07-22 21:25 ` [PATCH] ACPI: make acpi_idle Nehalem-aware Iain
2010-07-22 21:53 ` Iain
2010-07-22 22:01 ` Len Brown
2010-07-23 12:40 ` Iain
2010-08-03 6:55 ` Pavel Machek
2010-08-03 7:05 ` Andi Kleen
2010-05-25 12:37 ` acpi_idle: Very idle Core i7 machine never enters C3 Matthew Garrett
2010-05-25 15:40 ` Len Brown
2010-07-22 5:34 ` Len Brown
2010-02-01 14:10 ` Pavel Machek
2010-02-05 16:30 ` Jeff Garrett
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