Re: Firewire/sbp2 troubles with Linux 2.6.0

[mru@kth.se (Måns Rullgård)]

Ben Collins <bcollins@debian.org> writes:

>> > As far as 10mbs, you have to remember that even though firewire is much
>> > higher than that, your drive is still an IDE, and the firewire is still
>> > going through an IDE bridge. So the limitation lies in the IDE bridge.
>> > I've seen performance as high as 34MB/s with good IDE bridges and
>> > drives, though.
>> 
>> The disks will easily do 40 MB/s on a good IDE controller.  It seems
>> like a rather bad bridge to me if it has that much overhead.  I
>> haven't seen many different options for sale, either.
>
> Most things based on newer Oxford chips seem to work pretty well. What
> ohci1394 controller do you have though?

I have this:

00:0a.2 FireWire (IEEE 1394): Ricoh Co Ltd R5C552 IEEE 1394 Controller (prog-if 10 [OHCI])
        Subsystem: Asustek Computer, Inc.: Unknown device 1687
        Flags: bus master, medium devsel, latency 32, IRQ 11
        Memory at e5800000 (32-bit, non-prefetchable) [size=2K]
        Capabilities: <available only to root>

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Måns Rullgård
mru@kth.se