Re: [RFD] Automatic suspend
[Posted February 18, 2009 by corbet]
| From: |
| Arjan van de Ven <arjan-AT-infradead.org> |
| To: |
| Brian Swetland <swetland-AT-google.com> |
| Subject: |
| Re: [RFD] Automatic suspend |
| Date: |
| Tue, 17 Feb 2009 06:46:30 -0800 |
| Message-ID: |
| <20090217064630.688bf639@infradead.org> |
| Cc: |
| Matthew Garrett <mjg59-AT-srcf.ucam.org>,
"Rafael J. Wysocki" <rjw-AT-sisk.pl>,
"Woodruff, Richard" <r-woodruff2-AT-ti.com>,
Alan Stern <stern-AT-rowland.harvard.edu>,
Kyle Moffett <kyle-AT-moffetthome.net>,
Oliver Neukum <oliver-AT-neukum.org>,
Benjamin Herrenschmidt <benh-AT-kernel.crashing.org>,
pm list <linux-pm-AT-lists.linux-foundation.org>,
LKML <linux-kernel-AT-vger.kernel.org>,
Arve =?UTF-8?B?SGrDuG5uZXbDpWc=?= <arve-AT-android.com>,
Pavel Machek <pavel-AT-ucw.cz>,
Nigel Cunningham <nigel-AT-nigel.suspend2.net>,
mark gross <mgross-AT-linux.intel.com>,
Uli Luckas <u.luckas-AT-road.de>,
Igor Stoppa <igor.stoppa-AT-nokia.com>,
Len Brown <lenb-AT-kernel.org> |
| Archive‑link: | |
Article |
On Tue, 17 Feb 2009 06:20:01 -0800
Brian Swetland <swetland@google.com> wrote:
> Of course that still doesn't address userspace. Aggressively going to
> suspend lets us compensate for userspace programs that do somewhat
> silly things (I agree that it would be best if they didn't but they
> do and getting *everyone* to write their userspace code to avoid
> spinning or avoid waking up on short-duration timers to poll is a
> losing battle).
actually with powertop... on the open source side things are actually
won. It took all of 6 months...
I don't see that as a valid excuse. In fact, if this kind of solution
makes real userspace scheduled timers to be missed then I consider it a
serious functionality misfeature.
--
Arjan van de Ven Intel Open Source Technology Centre
For development, discussion and tips for power savings,
visit http://www.lesswatts.org
