From: Mark Craske <mcraske@mvista.com>
Date: Thu, 29 May 2008 11:39:16 +0100
Subject: [U-Boot-Users] Very slow JFFS2 scan time and directory listing
In-Reply-To: <mailman.342954.1212003221.5026.u-boot-users@lists.sourceforge.net>
References: <mailman.342954.1212003221.5026.u-boot-users@lists.sourceforge.net>
Message-ID: <1212057556.20175.10.camel@libdev4.mvista.co.uk>
List-Id: <u-boot.lists.denx.de>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
To: u-boot@lists.denx.de

In Message-ID:
> 	<c13b1cfc0805281223k314393a8w876ea75e1377073f@mail.gmail.com>
you wrote:

> It's taking an extremely long time to do a directory listing using the
> 'ls' command with JFFS2.
> Its taking nearly a minute to scan the file system and then about 1
> second to print each line.
> 
> What is could be the cause of this, and is there any way to speed this
> up currently?

I too am suffering from this very slow JFFS2 problem.
It is especially bad for NAND flash.

I modified the fs/jffs2/Makefile to use fs/jffs2/jffs2_nand_1pass.c
instead of jffs2_1pass.c, but that would not build.

I eventually fixed that by quite large changes, but it still ran
very slowly despite reading larger chunks of NAND.

Has anyone out there fixed this problem?

Regards, Mark