HD write speed

Peter Mueller peter.o.mueller at gmx.de
Sun Dec 22 18:39:31 UTC 2002


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Hi all,

I upload files from a PC via ftp to my embedded system
(68332 at 16MHz/cs8900). Download/write rates are only around 5.5kB per
second. Without writing to disc (commented out the write call in ftpd
code) the download rate is about 300k/s.
Next I wrote 1MB directly from the board to a file. Time required shows
exacly 5.5KB/s. So the reason seems to be the filesystem code or my low
level driver. It is based on simple memory mapped acess following the
example code from Thomas. No DMA etc.

Can someone verify my figures?
Any chance to make writing faster? Is there an option in the filesystem
code to enable "multi sector" writes?

Thanks,
Peter

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