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From: Eric Nelson <eric.nelson@boundarydevices.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] ext2load: increase read speed
Date: Tue, 08 May 2012 08:53:09 -0700	[thread overview]
Message-ID: <4FA94165.6020403@boundarydevices.com> (raw)
In-Reply-To: <20120508154349.GC15711@titan.lakedaemon.net>

Hi Jason,

On 05/08/2012 08:43 AM, Jason Cooper wrote:
> On Wed, Apr 25, 2012 at 06:17:48PM -0700, Eric Nelson wrote:
>> On 03/28/2012 07:37 AM, Jason Cooper wrote:
>>> This patch dramatically drops the amount of time u-boot needs to read a
>>> file from an ext2 partition.  On a typical 2 to 5 MB file (kernels and
>>> initrds) it goes from tens of seconds to a couple seconds.
>>>
>>> All we are doing here is grouping contiguous blocks into one read.
>>>
>>> Boot tested on Globalscale Technologies Dreamplug (Kirkwood ARM SoC)
>>> with three different files.  sha1sums were calculated in Linux
>>> userspace, and then confirmed after ext2load.
>>>
>>> Signed-off-by: Jason Cooper<u-boot@lakedaemon.net>
>>
>> Tested-by: Eric Nelson<eric.nelson@boundarydevices.com>
>
> Thanks for testing!  I've copied your results into the commit and will
> be doing a pull request shortly.
>

No problem.

Ironically, I'm working with an image this morning that loads the
kernel from ext2 and I keep thinking my board is locked up because
reads take so long.

Regards,


Eric

  reply	other threads:[~2012-05-08 15:53 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-03-28 14:37 [U-Boot] [PATCH] ext2load: increase read speed Jason Cooper
2012-04-26  1:17 ` Eric Nelson
2012-05-08 15:43   ` Jason Cooper
2012-05-08 15:53     ` Eric Nelson [this message]
2012-04-26 12:54 ` Thierry Reding
2012-05-08 15:48   ` Jason Cooper
2012-05-08 16:13 ` [U-Boot] [GIT PULL] ext2load speedup Jason Cooper
2012-05-21  1:35   ` [U-Boot] [GIT PULL RESEND] " Jason Cooper
2012-05-21  5:19     ` Wolfgang Denk
2012-06-01 15:41     ` Jason Cooper
2012-06-01 15:54 ` [U-Boot] [PATCH v2] ext2load: increase read speed Jason Cooper
2012-06-21 20:49   ` Wolfgang Denk
2012-07-03 16:05     ` [U-Boot] [PATCH] ext2fs: fix warning: 'blocknxt' may be used uninitialized Kim Phillips
2012-07-03 22:12       ` Andreas Bießmann
2012-07-03 22:41         ` [U-Boot] [PATCH v2] " Kim Phillips
2012-07-04  6:09           ` Thierry Reding
2012-07-06 13:31           ` Jason Cooper
2012-07-08 20:55           ` Wolfgang Denk
2012-07-23 18:56             ` Tom Rini
2012-07-24  4:59               ` Thierry Reding

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