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From: Wolfgang Denk <wd@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] tools: mkimage can read input on /dev/stdin
Date: Sat, 27 Sep 2014 20:24:36 +0200	[thread overview]
Message-ID: <20140927182436.CD59B3857A9@gemini.denx.de> (raw)
In-Reply-To: <CADF714bpHv6x8wUxs=7H-st3-ThPCeBWbZvO_-uoQcdWS6WqJQ@mail.gmail.com>

Dear Julien,

In message <CADF714bpHv6x8wUxs=7H-st3-ThPCeBWbZvO_-uoQcdWS6WqJQ@mail.gmail.com> you wrote:
>
> > I don't believe you.  Sizes rare certainly not identical, and neither
> > is the performance.  Did you do any real measurements?
> 
> mmap is useful when you need to make random access in a file, or to
> optimize memory: when a file is mmapped, the kernel only loads the
> parts of the file that are accessed. In the case of mkimage, the file
> is read sequentially (meaning all of it will be retrieved from the
> disk).

OK, so you don't have any real data, but make a very specific
statement: "exactly the same."

Sorry, but this is not an answer I'm going to buy.

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
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bility that the universe does not exist.
                        - Terry Pratchett, _The Dark Side of the Sun_

  reply	other threads:[~2014-09-27 18:24 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-09-26 19:33 [U-Boot] [PATCH] tools: mkimage can read input on /dev/stdin Julien Castets
2014-09-27 12:54 ` Wolfgang Denk
2014-09-27 13:11   ` Julien Castets
2014-09-27 13:25     ` Wolfgang Denk
2014-09-27 17:28       ` Julien Castets
2014-09-27 18:24         ` Wolfgang Denk [this message]
2014-09-27 19:06           ` Julien Castets
2014-09-27 21:56             ` Wolfgang Denk
2014-09-27 22:01               ` Marek Vasut
2014-09-27 22:21                 ` Wolfgang Denk
2014-09-28  0:16               ` Julien Castets
2014-09-28  6:49                 ` Wolfgang Denk
2014-09-28 10:49                   ` Julien Castets
2014-09-28 17:48                     ` Wolfgang Denk

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