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From: Robert Schwebel <r.schwebel@pengutronix.de>
To: Matthieu CASTET <matthieu.castet@parrot.com>
Cc: Marco Stornelli <marco.stornelli@gmail.com>,
	Constantine Shulyupin <const@makelinux.com>,
	"linux-embedded@vger.kernel.org" <linux-embedded@vger.kernel.org>
Subject: Re: Super Fast Boot of Embedded Linux: 300 ms from boot loader to shell
Date: Thu, 14 Apr 2011 20:52:04 +0200	[thread overview]
Message-ID: <20110414185204.GJ3811@pengutronix.de> (raw)
In-Reply-To: <4DA6A5A7.2060701@parrot.com>

On Thu, Apr 14, 2011 at 09:43:35AM +0200, Matthieu CASTET wrote:
> Not to say such case are not interesting : loading a linux kernel with
> only a serial driver, a ramdisk and a shell as init doesn't reflect
> reality.
>
> In real product what you want if fast user interaction (sound,
> mounting big filesystem with user data, lcd display, ...)

Well, it depends on the application. In the automotive box I've shown
the barebox based boot optimizations for in my ELC-E talk, the task is
to get CAN communication running in < 200 ms. For that kind of
application it's useful to be in userspace as fast as possible, just in
order to have one socket-can application running, and everything else
comes later.

rsc
-- 
Pengutronix e.K.                           |                             |
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      reply	other threads:[~2011-04-14 18:52 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-04-11 14:02 Super Fast Boot of Embedded Linux: 300 ms from boot loader to shell Constantine Shulyupin
2011-04-11 16:53 ` Marco Stornelli
2011-04-13 14:53   ` Constantine Shulyupin
2011-04-13 17:27     ` Marco Stornelli
2011-04-14  7:43       ` Matthieu CASTET
2011-04-14 18:52         ` Robert Schwebel [this message]

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