Re: [U-Boot] JFFS2 with NAND flash is very SLOW ...
In my side: MTD0 (720kB): U-boot MTD1 (80kB) : env. Variables MTD2 (12MB) : kernel + initramfs MTD3 (50MB) : rootfs
Maybe it will not help you but I have
MTD0 (all the nand 256M) MTD1 uboot+ embedded config 2M RAW MTD2 1M JFFS2 MTD5 config 5M JFFS2 MTD3 Kernel + initramfs 12M JFFS2 MTD4 KernelBKp 12M JFFS2 MTD5 content 224M
Scanning and fsload of the MTD3 partition take 3 seconds with 2009.03 With 1.3.4 it was something like 6-10 seconds. But never 1 minute. I have seen that when scanning the content partition of 224M.
If it exists a difference between 2009.03 and 1.3.3 it is not sufficient. It is very slow in both versions. It takes more than 1 minutes to obtain the result of "fsinfo" command !!!
sYLVAIN
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On Tuesday 02 June 2009 15:02:17 Cote, Sylvain wrote:
In my side: MTD0 (720kB): U-boot MTD1 (80kB) : env. Variables MTD2 (12MB) : kernel + initramfs MTD3 (50MB) : rootfs
Maybe it will not help you but I have
MTD0 (all the nand 256M) MTD1 uboot+ embedded config 2M RAW MTD2 1M JFFS2 MTD5 config 5M JFFS2 MTD3 Kernel + initramfs 12M JFFS2 MTD4 KernelBKp 12M JFFS2 MTD5 content 224M
Scanning and fsload of the MTD3 partition take 3 seconds with 2009.03 With 1.3.4 it was something like 6-10 seconds. But never 1 minute. I have seen that when scanning the content partition of 224M.
Parameters like I-cache and D-cache handling greatly effect this scan time. Some platforms have caches enabled others don't. This might explain some differences here.
Best regards, Stefan
===================================================================== DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: +49-8142-66989-0 Fax: +49-8142-66989-80 Email: office@denx.de =====================================================================
Is it better to use or not D-cache and I-cache? Currently, in my config file, I have only #define CONFIG_CMD_CACHE What do I have to add?
Thanks in advance for your help.
Pierre
-----Message d'origine----- De : u-boot-bounces@lists.denx.de [mailto:u-boot-bounces@lists.denx.de] De la part de Stefan Roese Envoyé : mardi 2 juin 2009 15:18 À : u-boot@lists.denx.de Cc : Pierre Savary; Cote, Sylvain Objet : Re: [U-Boot] JFFS2 with NAND flash is very SLOW ...
On Tuesday 02 June 2009 15:02:17 Cote, Sylvain wrote:
In my side: MTD0 (720kB): U-boot MTD1 (80kB) : env. Variables MTD2 (12MB) : kernel + initramfs MTD3 (50MB) : rootfs
Maybe it will not help you but I have
MTD0 (all the nand 256M) MTD1 uboot+ embedded config 2M RAW MTD2 1M JFFS2 MTD5 config 5M JFFS2 MTD3 Kernel + initramfs 12M JFFS2 MTD4 KernelBKp 12M JFFS2 MTD5 content 224M
Scanning and fsload of the MTD3 partition take 3 seconds with 2009.03 With 1.3.4 it was something like 6-10 seconds. But never 1 minute. I
have
seen that when scanning the content partition of 224M.
Parameters like I-cache and D-cache handling greatly effect this scan time. Some platforms have caches enabled others don't. This might explain some differences here.
Best regards, Stefan
===================================================================== DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: +49-8142-66989-0 Fax: +49-8142-66989-80 Email: office@denx.de ===================================================================== _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
participants (3)
-
Cote, Sylvain -
Pierre Savary -
Stefan Roese