lkml.org 
[lkml]   [2006]   [Mar]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: MAX_USBFS_BUFFER_SIZE
On Wed, Mar 01, 2006 at 02:41:23PM -0800, Greg KH wrote:
> On Wed, Mar 01, 2006 at 11:34:30PM +0100, Olivier Galibert wrote:
> > As a data point, I have traces of a scanner session including a
> > download of a 26Mb binary image using 524288 bytes logical blocks
> > physically transferred with 61440 bytes bulk_in frames. Seems stable
> > enough. IIRC the scanner-side controller chip has some advanced
> > buffering just to handle that kind of bandwidth.
>
> That's impressive. What are the endpoint sizes on the device that did
> this?

Hmmm, the chip is a Genesys gl841, on a canonscan lide 35. And it
advertises a 64 bytes wMaxPacketSize on both in and out bulk
interfaces. Go figure.

Want the log and/or the lsusb -v?

OG.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-03-02 00:28    [W:0.127 / U:0.088 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site