From mboxrd@z Thu Jan 1 00:00:00 1970 From: HeLei Date: Tue, 3 Nov 2009 18:02:57 +0800 Subject: [U-Boot] Does uboot EBS(erase block summary) to reduce JFFS2 scaning time? In-Reply-To: References: Message-ID: List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de > Subject: RE: [U-Boot] Does uboot EBS(erase block summary) to reduce JFFS2 scaning time? > To: leon.he at msn.com > CC: u-boot at lists.denx.de > From: joakim.tjernlund at transmode.se > Date: Tue, 3 Nov 2009 10:52:06 +0100 > > HeLei wrote on 03/11/2009 10:39:48: > > > > > > > Subject: RE: [U-Boot] Does uboot EBS(erase block summary) to reduce JFFS2 > > scaning time? > > > To: leon.he at msn.com > > > CC: u-boot at lists.denx.de > > > From: joakim.tjernlund at transmode.se > > > Date: Tue, 3 Nov 2009 10:29:47 +0100 > > > > > > HeLei wrote on 03/11/2009 10:21:13: > > > > > > > > Ok, thank you, jocke. > > > > Can you tell me how much time can be saved according to your idea, by your > > experience? > > > > > > Can't remember any figures, but is was lots by not scanning empty space. It all > > > depends on how full your fs is. > > Thanks, I got it! > > I think the problem of JFFS2 is it never store the index of file system in > > flash. However 1~2GiB flash is quite popular, how JFFS2 face such situation :( > > JFFS2 isn't really suited for such big FS:es and works best on NOR flash. > You should consider some other FS(YAFFS, LogFS, UBIFS etc.). I can't say > which tough as I haven't used any of them. I got it, thanks > > Jocke > _________________________________________________________________ ?Windows Live ???????Messenger2009???? http://www.windowslive.cn