DiskOnChip write performance

David Woodhouse dwmw2 at infradead.org
Thu Sep 6 11:02:52 EDT 2001

friedrich at MAZeT.de said:
> I'm using a DiskOnChip 2000 and thanks to this mailing list I'm able
> to boot linux off it.  My application needs to write big files pretty
> fast and I was expecting a write speed of 500 kBytes/sec, the
> M-Systems DOC 2000 spec claims to achieve this. Unfortunately the
> fastest speed I could obtain was about 70 kBytes/sec which seems
> pretty poor to me. When I asked the M-Systems support the answers were
> not really helpfull so far. 

Are you using their drivers or the real Linux ones? If you're not using
their drivers, I can understand why they couldn't help you very much.

Our driver is fairly naïve, and may well be wasting a lot of time which 
it shouldn't. I can give you pointers on fixing that, if you're 


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