2008-06-09 23:26:12 MTD of VFAT writing speed
戈 杨 (CHINA)
Message: 56887
I have blackfin board running uClinux, writng files to nand flash, the file system is Vfat, I find the writng speed is too slow, about 50KB/s, I checked the driver file bfin_nand.c , but find no problem. the normal speed must be more than 200kB/s, can you give me some help? thank you!
bfin_nand.c
nand_base.c
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2008-06-09 23:37:40 Re: MTD of VFAT writing speed
Mike Frysinger (UNITED STATES)
Message: 56888
you should not be using VFAT on flash devices ... it's a horrible filesystem for flash
use a real filesystem like yaffs2
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2008-06-10 00:15:55 Re: MTD of VFAT writing speed
戈 杨 (CHINA)
Message: 56889
I know, but for the covienence for the windows, we must use vFAT
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2008-06-10 00:27:01 Re: MTD of VFAT writing speed
Mike Frysinger (UNITED STATES)
Message: 56890
that doesnt really make sense ... windows cannot access nand devices directly
it also isnt usable ... vfat does not do bad block handling which nand requires
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2008-06-10 04:47:37 Re: MTD of VFAT writing speed
戈 杨 (CHINA)
Message: 56912
if I use yaff, how can I copy this file in WINXP , I must write and install a windows driver....
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2008-06-10 05:00:19 Re: MTD of VFAT writing speed
Zhi Qiang Zhang (CHINA)
Message: 56914
How can you copy files between BFIN board and WINXP while your board using VFAT?
Regards,
ZhangZQ
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2008-06-10 05:10:13 Re: MTD of VFAT writing speed
戈 杨 (CHINA)
Message: 56916
It is realized by USB and VFAT , but the speed is too slow
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2008-06-10 05:18:11 Re: MTD of VFAT writing speed
Andrea Federico Grisotto (ITALY)
Message: 56918
if you want to transfer files with the usb take a look at these documents:
http://docs.blackfin.uclinux.org/doku.php
or search in http://docs.blackfin.uclinux.org/doku.php using the word "gadget"
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2008-06-10 08:02:47 Re: MTD of VFAT writing speed
Robin Getz (UNITED STATES)
Message: 56925
戈 杨
I'm trying to understand your system: Filesystem on NAND, which is exposed to Windows as mass storage over USB?
Or you want to run file system on USB memory stick?
-Robin