From: Artem Bityutskiy <dedekind@infradead.org>
To: kyungmin.park@samsung.com
Cc: "linux-mtd@lists.infradead.org" <linux-mtd@lists.infradead.org>,
Adrian Hunter <hunter.programmer@gmail.com>
Subject: Re: OneNAND: read-while-load
Date: Fri, 05 Jan 2007 11:01:40 +0200 [thread overview]
Message-ID: <1167987700.3683.9.camel@sauron> (raw)
In-Reply-To: <30559532.90311167981321931.JavaMail.weblogic@ep_ml22>
Kyungmin, Adrian,
On Fri, 2007-01-05 at 07:15 +0000, Kyungmin Park wrote:
> I will run regression test with this one during this weekend.
>
> And which program (JFFS2 or UBI) do you use.
>
> I can't find any performance increase in JFFS2
It depends how you tested it. Surely you notice some performance gain
only if JFFS2 reads more then 2K bytes of data. And this only happens
when you read files's contents, especially if this file's pages were not
compressed to less then 2K.
So a test like:
dd if=/dev/udandom of=/mnt/jffs2/file bs=4K
time dd if=/mnt/jffs2/file of=/dev/null
would be roughly OK.
--
Best regards,
Artem Bityutskiy (Битюцкий Артём)
next prev parent reply other threads:[~2007-01-05 9:01 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-05 7:15 OneNAND: read-while-load Kyungmin Park
2007-01-05 8:05 ` Adrian Hunter
2007-01-05 8:41 ` Adrian Hunter
2007-01-05 9:01 ` Artem Bityutskiy [this message]
-- strict thread matches above, loose matches on Subject: below --
2007-01-05 9:58 Kyungmin Park
2007-01-05 10:54 ` Artem Bityutskiy
2007-01-04 8:55 Adrian Hunter
2007-01-04 11:35 ` Josh Boyer
2007-01-04 12:14 ` Adrian Hunter
2007-01-04 13:57 ` Josh Boyer
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