From: Artem Bityutskiy <dedekind@infradead.org>
To: xiaochuan-xu <xiaochuan-xu@cqu.edu.cn>
Cc: linux-mtd@lists.infradead.org
Subject: Re: [ubi][wl] the W/R performance of my wear-leveling unit
Date: Fri, 11 Jul 2008 10:50:44 +0300 [thread overview]
Message-ID: <1215762644.11282.9.camel@sauron> (raw)
In-Reply-To: <1215762163.2784.60.camel@localhost.localdomain>
On Fri, 2008-07-11 at 15:42 +0800, xiaochuan-xu wrote:
> Hi,
>
> I've compared the current WL unit algorithm with
> my new WL unit one on the W/R time.
>
>
> modprobe nandsim + ubi + ubifs.
> And then copy a file (9338201 Bytes) to
>
> ##time for i in `seq 1 20`; do sudo dd if=~/tmp/file of=/mnt/ubifs/file
> count=1024&> /dev/null; sync; done
>
> in the first time. the time of currenty algorithm and mine is as
> following:
>
> current UBI gives:
>
> real 0m3.145s
> user 0m0.124s
> sys 0m0.700s
>
> mine:
> real 0m2.539s
> user 0m0.140s
> sys 0m0.772s
Looks promising. I'll look at this again but a bit later.
Could you please think how your patch may be split on several separate
independent patches?
--
Best regards,
Artem Bityutskiy (Битюцкий Артём)
prev parent reply other threads:[~2008-07-11 7:51 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1215762163.2784.60.camel@localhost.localdomain>
2008-07-11 7:42 ` [ubi][wl] the W/R performance of my wear-leveling unit xiaochuan-xu
2008-07-11 7:50 ` Artem Bityutskiy [this message]
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