On 01/14/2014 02:08 AM, Pratyush Anand wrote:
On Tue, Jan 14, 2014 at 02:06:13PM +0800, Alan Ott wrote:
On 01/14/2014 12:08 AM, Rajaram R wrote:
I guess it is something to do with the buffer size of the gadget
driver. Could you please try change the buffer size to 16K and confirm
if the delay is shifting ? In this case your delay should be after 31
transfers...
===============
66 static struct usb_zero_options gzero_options = {
67 .isoc_interval = 4,
68 .isoc_maxpacket = 1024,
69 .bulk_buflen = 4096, =========================> change to 16K
70 .qlen = 32,
71 };
===============
Hi Rajram,
Yes, this does as you suspected. I now get 222Mbit/sec of data transfer.
See here, some way to get higher speed with zero gadget.
http://www.spinics.net/lists/linux-usb/msg100588.html
Thanks Pratyush for the info.
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