[Gllug] USB Discs

[Daniel Andersson]

> Daniel Andersson wrote:
> >>Poor. USB is IIRC 12Mb/s, i.e., well over 100 times slower than a
> >>typical SCSI or IDE disk. Firewire drives, while still slow compared
> >>to "Real" disks, are at least much better at 400Mb/s -- comparable
> >>to internal hard disks of a few years ago.
> > 
> > 
> > not sure if my IDE disk is typical, but
> > 
> > /dev/hdc1:
> >  Timing buffered disk reads:  64 MB in  7.27 seconds =  8.80 MB/sec
> > 
> > 
> > that's not 100 times faster than 12MB/s
> 
> USB 1.1 is 12 Mb/s. Thats a SMALL b as in bits. 12 Mb/s is about 2 MB/s 
> or so which is not very fast. IDE disks should go a lot quicker than 8.8 
> MB/s when using DMA etc...
> Steve

wooops
ah, thanks :o)

this is an old disk
but will look into DMA

thanks

/ d

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