From: Artem Bityutskiy <dedekind@infradead.org>
To: Konstantin Kletschke <lists@ku-gbr.de>
Cc: linux-mtd@lists.infradead.org
Subject: Re: General performance of NAND operations i.e mount and ls
Date: Thu, 06 Sep 2007 14:21:33 +0300 [thread overview]
Message-ID: <1189077693.14370.60.camel@sauron> (raw)
In-Reply-To: <20070906093735.GD2164@z1.synertronixx>
On Thu, 2007-09-06 at 11:37 +0200, Konstantin Kletschke wrote:
> Okay, what would I roughly excpect on this system?
>
> # time dd if=/dev/mtd4 of=/dev/null bs=4096 count=512
> 512+0 records in
> 512+0 records out
> real 0m 0.61s
> user 0m 0.01s
> sys 0m 0.61s
> # time dd if=/dev/zero of=/dev/mtd4 bs=4096 count=512
> 512+0 records in
> 512+0 records out
> real 0m 1.08s
> user 0m 0.00s
> sys 0m 1.08s
Not sure about your system, but the hardware I worked with was ~8 times
faster on read and ~3 times faster on write.
--
Best regards,
Artem Bityutskiy (Битюцкий Артём)
next prev parent reply other threads:[~2007-09-06 11:21 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-06 8:12 General performance of NAND operations i.e mount and ls Konstantin Kletschke
2007-09-06 8:27 ` Artem Bityutskiy
2007-09-06 8:44 ` Konstantin Kletschke
2007-09-06 9:11 ` Artem Bityutskiy
2007-09-06 9:37 ` Konstantin Kletschke
2007-09-06 10:53 ` Artem Bityutskiy
2007-09-06 11:21 ` Artem Bityutskiy [this message]
2007-09-06 11:11 ` Artem Bityutskiy
2007-09-06 16:03 ` Konstantin Kletschke
2007-09-07 5:47 ` Artem Bityutskiy
2007-09-07 7:44 ` Konstantin Kletschke
2012-06-25 12:01 ` JFFS2 CRC problems Stefan Roese
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