From: Arjan van de Ven <arjan-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
To: "Rafael J. Wysocki" <rjw-KKrjLPT3xs0@public.gmane.org>
Cc: Linux Kernel Mailing List
<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Kernel Testers List
<kernel-testers-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Yves-Alexis Perez
<corsac-8fiUuRrzOP0dnm+yROfE0A@public.gmane.org>
Subject: Re: [Bug #12152] Huge wakeups number from i1915
Date: Sun, 7 Dec 2008 14:52:03 -0800 [thread overview]
Message-ID: <20081207145203.0f998d5b@infradead.org> (raw)
In-Reply-To: <07Xes05z25M.A.VtF.ksEPJB@chimera>
On Sun, 7 Dec 2008 21:32:54 +0100 (CET)
"Rafael J. Wysocki" <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> This message has been generated automatically as a part of a report
> of recent regressions.
>
> The following bug entry is on the current list of known regressions
> from 2.6.27. Please verify if it still should be listed and let me
> know (either way).
>
>
> Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=12152
> Subject : Huge wakeups number from i1915
> Submitter : Yves-Alexis Perez <corsac-8fiUuRrzOP0dnm+yROfE0A@public.gmane.org>
> Date : 2008-12-02 16:48 (6 days old)
> References :
> http://marc.info/?l=linux-acpi&m=122823656702994&w=4
>
at least in some of the cases where this has been seen the cause is the
following:
The i915 DRM driver used to do polling for completion, busy waiting. It
moved to be interrupt driven, which is usually better for power, but it
will show up as more wakeups in powertop....
--
Arjan van de Ven Intel Open Source Technology Centre
For development, discussion and tips for power savings,
visit http://www.lesswatts.org
next prev parent reply other threads:[~2008-12-07 22:52 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-12-07 20:27 2.6.28-rc8-git5: Reported regressions from 2.6.27 Rafael J. Wysocki
2008-12-07 20:27 ` [Bug #11849] default IRQ affinity change in v2.6.27 (breaking several SMP PPC based systems) Rafael J. Wysocki
2008-12-07 20:32 ` [Bug #11898] mke2fs hang on AIC79 device Rafael J. Wysocki
2008-12-07 20:32 ` [Bug #11906] 2.6.28-rc2 seems to fail at powering down the monitor when it should Rafael J. Wysocki
2008-12-07 20:32 ` [Bug #11858] Timeout regression introduced by 242f9dcb8ba6f68fcd217a119a7648a4f69290e9 Rafael J. Wysocki
2008-12-07 20:32 ` [Bug #12028] i915 DRM is broken in 2.6.28-rc4 Rafael J. Wysocki
2008-12-07 20:32 ` [Bug #11947] 2.6.28-rc VC switching with Intel graphics broken Rafael J. Wysocki
2008-12-07 20:32 ` [Bug #11958] [2.6.27.x => 2.6.28-rc3] Xorg crash with xf86MapVidMem error Rafael J. Wysocki
2008-12-07 20:32 ` [Bug #12034] snd-hda-intel on Realtek ALC268 chip shows only Master volume (for playback) Rafael J. Wysocki
2008-12-07 20:32 ` [Bug #12100] resume (S2R) broken by Intel microcode module, on A110L Rafael J. Wysocki
2008-12-07 20:32 ` [Bug #12061] snd_hda_intel: power_save: sound cracks on powerdown Rafael J. Wysocki
2008-12-07 20:32 ` [Bug #12047] ACPI toshiba: only register rfkill if bt is enabled Rafael J. Wysocki
2008-12-07 20:32 ` [Bug #12152] Huge wakeups number from i1915 Rafael J. Wysocki
2008-12-07 22:52 ` Arjan van de Ven [this message]
[not found] ` <20081207145203.0f998d5b-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2008-12-07 22:52 ` Rafael J. Wysocki
[not found] ` <200812072352.07151.rjw-KKrjLPT3xs0@public.gmane.org>
2008-12-07 23:12 ` Arjan van de Ven
[not found] ` <20081207151203.46c01a0d-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2008-12-07 23:15 ` Rafael J. Wysocki
2008-12-08 6:24 ` Yves-Alexis Perez
2008-12-08 6:32 ` Yves-Alexis Perez
2008-12-08 7:28 ` Rafael J. Wysocki
[not found] ` <200812080828.07683.rjw-KKrjLPT3xs0@public.gmane.org>
2008-12-08 7:32 ` Yves-Alexis Perez
2008-12-08 12:59 ` Matthew Garrett
2008-12-08 16:19 ` Yves-Alexis Perez
[not found] ` <20081208161948.GF16053-vD43ovf/fd+sTnJN9+BGXg@public.gmane.org>
2008-12-08 16:35 ` Matthew Garrett
2008-12-07 20:32 ` [Bug #12156] v2.6.28-rc2: x86_32 relocation regression? Rafael J. Wysocki
2008-12-07 20:32 ` [Bug #12155] Regression in 2.6.28-rc and 2.6.27-stable - hibernate related Rafael J. Wysocki
2008-12-07 20:32 ` [Bug #12160] networking oops after resume from s2ram (2.6.28-rc6) Rafael J. Wysocki
2008-12-07 20:32 ` [Bug #12158] commit b1ee26b freezes system on switching from X to text console Rafael J. Wysocki
2008-12-07 20:32 ` [Bug #12159] 2.6.28-rc6-git1 -- No sound produced from Intel HDA ALSA driver Rafael J. Wysocki
2008-12-07 20:32 ` [Bug #12161] [i915 drm] irq 16: nobody cared with latest git kernels Rafael J. Wysocki
2008-12-07 20:32 ` [Bug #12177] [memcg BUG ?] failed to boot on IA64 with CONFIG_DISCONTIGMEM=y Rafael J. Wysocki
2008-12-08 7:02 ` Balbir Singh
[not found] ` <20081208070230.GA18939-SINUvgVNF2CyUtPGxGje5AC/G2K4zDHf@public.gmane.org>
2008-12-08 7:29 ` Rafael J. Wysocki
2008-12-07 20:32 ` [Bug #12178] Xorg crash at first start Rafael J. Wysocki
-- strict thread matches above, loose matches on Subject: below --
2008-12-03 21:49 2.6.28-rc7-git2: Reported regressions from 2.6.27 Rafael J. Wysocki
2008-12-03 21:58 ` [Bug #12152] Huge wakeups number from i1915 Rafael J. Wysocki
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