From mboxrd@z Thu Jan  1 00:00:00 1970
From: Detlev Zundel <dzu@denx.de>
Date: Mon, 09 May 2011 12:49:06 +0200
Subject: [U-Boot] boot-up time optimization. Where to start?
In-Reply-To: <BANLkTimCp9E0sTOQv1HWNmSk1Q901wqPVg@mail.gmail.com> (Simon
	Glass's message of "Thu, 5 May 2011 13:18:00 -0700")
References: <BANLkTi=HfOsg73_GCC=4aVoi_XUNbcf9nQ@mail.gmail.com>
	<201105030848.17576.alexander.stein@systec-electronic.com>
	<20110505053220.AF754D5F849@gemini.denx.de>
	<201105060610.29781.manningc2@actrix.gen.nz>
	<BANLkTimCp9E0sTOQv1HWNmSk1Q901wqPVg@mail.gmail.com>
Message-ID: <m2fwoom9nh.fsf@ohwell.denx.de>
List-Id: <u-boot.lists.denx.de>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
To: u-boot@lists.denx.de

Hi Simon,

[...]

> I have a patch which displays boot time in microseconds if it is of
> interest to anyone:
>
> Timer summary in microseconds:
>        Mark    Elapsed  Stage
>           0          0  awake
>     193,298    193,298  usb_start
>   1,342,411  1,149,113  eth_start
>   3,767,039  2,424,628  bootp_start
>   3,790,121     23,082  bootp_stop
>   3,790,293        172  tftp start
>   4,761,459    971,166  tftp done
>   4,761,489         30  bootm_start
>   4,892,145    130,656  start_kernel

Of course we are interested, please show us the code.  Such code, even
if it does not get into mainline can be a good starter for other people
benchmarking their port.

Thanks
  Detlev

-- 
"One of my most productive days was throwing away 1000 lines of code."
  - Ken Thompson.
--
DENX Software Engineering GmbH,      MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich,  Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-40 Fax: (+49)-8142-66989-80 Email: dzu at denx.de