Broken Firewire 400/SCSI on ppc Powerbook5,8

Stefan Richter stefanr at s5r6.in-berlin.de
Tue Sep 5 02:58:40 EST 2006


Wolfgang Pfeiffer wrote on :
...
> # /sbin/hdparm -tT /dev/sda
> 
> /dev/sda:
>  Timing cached reads:   1244 MB in  2.00 seconds = 620.49 MB/sec
>  Timing buffered disk reads:   34 MB in  3.02 seconds =  11.24 MB/sec
...
>  Timing buffered disk reads:   34 MB in  3.04 seconds =  11.17 MB/sec
...
>  Timing buffered disk reads:   36 MB in  3.07 seconds =  11.72 MB/sec
...

Looks quite slow. I get 18 MB/s from a 20GB 2.5" HDD in an 1394a
enclosure, on an 1394a adapter or same on an 1394b adapter. The HDD was
actually taken out of a TiBook some time ago.

But I have no reference values of PowerBooks in target disk mode. This
mode is probably not optimized for performance.
-- 
Stefan Richter
-=====-=-==- =--= --=--
http://arcgraph.de/sr/



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