usb 2.0

[Ow Mun Heng]

> -----Original Message-----
> From: clemens at dwf.com [mailto:clemens at dwf.com]
> Sent: Wednesday, December 17, 2003 12:29 PM
> To: fedora-list at redhat.com
> Cc: reg at orion.dwf.com
> Subject: Re: usb 2.0 
> 
> 
> What kind of
> > speeds can be expected?  
> 
> I had problems with my (off brand?) USB2.0 card / USB Disk up 
> to the curreng
> jumbo patch for 2.6.0-test11.  With it, it works like a 
> champ.  I see 16MB/s
> transfer rates, which is probably limited by the disk hardware.

This is /bin/hdparm -tT readings?? That's real fast..

One guy with a maxtor usb 2.0 HD on this list had

[root at localhost sbin]# ./hdparm -tT /dev/sdb1
 
/dev/sdb1:
 Timing buffer-cache reads:   852 MB in  2.00 seconds = 426.00 MB/sec
 Timing buffered disk reads:   36 MB in  3.10 seconds =  11.61 MB/sec

which is tm a bit slow compared to ide at 26-29MB/sec