From: "Rafael J. Wysocki" <rjw@sisk.pl>
To: Maksim Rayskiy <maksim.rayskiy@gmail.com>
Cc: linux-pm@lists.linux-foundation.org, linux-scsi@vger.kernel.org,
Tejun Heo <tj@kernel.org>
Subject: Re: [linux-pm] [RFC] Deferred disk spinup during system resume
Date: Thu, 30 Dec 2010 23:46:07 +0100 [thread overview]
Message-ID: <201012302346.07275.rjw@sisk.pl> (raw)
In-Reply-To: <AANLkTinOqLOJ7JCpHeQNYUEirqAvkSce+eFDCGkWn3jE@mail.gmail.com>
On Thursday, December 30, 2010, Maksim Rayskiy wrote:
> Hello,
>
> When resuming from system suspend, scsi disks are being spun up which
> takes quite a lot of time (5+ seconds in my case). The spinup is done
> synchronously, so this time adds up to overall system resume time.
> Ours is an embedded platform and we are using flash-based rootfs, so
> there is no immediate need in harddrive after resume. What is much
> more important for us is to minimize time-to-full-power. To speed up
> resume, we would like to have an option to defer the spinup or run it
> in parallel with system resume. I could not find any existing
> mechanism to do the trick, but I might have missed something.
>
> Can anybody comment on this?
Do you use asynchronous suspend/resume?
Rafael
next prev parent reply other threads:[~2010-12-30 22:47 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-30 19:40 [RFC] Deferred disk spinup during system resume Maksim Rayskiy
2010-12-30 22:46 ` Rafael J. Wysocki [this message]
2010-12-31 0:49 ` [linux-pm] " Maksim Rayskiy
2010-12-31 11:27 ` Tejun Heo
2010-12-31 11:45 ` Tejun Heo
-- strict thread matches above, loose matches on Subject: below --
2011-01-07 1:17 maksim.rayskiy
2011-01-07 3:16 ` Jeff Garzik
2011-01-07 3:46 ` Maksim Rayskiy
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