On 12/29/2014 11:37 AM, Felipe Balbi wrote: > Hi, > > On Sun, Dec 28, 2014 at 07:28:33PM -0500, Jorge Ramirez-Ortiz wrote: >> On 12/28/2014 11:39 AM, Felipe Balbi wrote: >>> On Sat, Dec 27, 2014 at 05:33:36PM -0500, Jorge Ramirez-Ortiz wrote: >>>> Hi Ricardo/all >>>> >>>> I finally got around to capture a trace of a SS bulk transfer using the >>>> net2280. >>>> The trace is available to anyone interested (70 MB file for the Beaglebone >>>> 5000). >>> can you publish the trace somewhere we can download ? I use Beagle5000 >>> myself and could help revieweing the traces. >>> >> Thanks Felipe. >> I dont have any public ftp server at hand so I just pushed the log to my >> Xenomai >> git tree. >> >> please grab it from here (no need to clone the tree, just press the download >> link) >> http://git.xenomai.org/xenomai-jro.git/commit/?h=logs > One of the reasons could be because you're using the printer gadget :-) > Have you tried any of the other gadgets ? In any case, try this little > hack: > > diff --git a/drivers/usb/gadget/legacy/printer.c > b/drivers/usb/gadget/legacy/printer.c > index 9054598..8a09661 100644 > --- a/drivers/usb/gadget/legacy/printer.c > +++ b/drivers/usb/gadget/legacy/printer.c > @@ -129,7 +129,7 @@ module_param(qlen, uint, S_IRUGO|S_IWUSR); > > /* holds our biggest descriptor */ > #define USB_DESC_BUFSIZE 256 > -#define USB_BUFSIZE 8192 > +#define USB_BUFSIZE 65536 > > static struct usb_device_descriptor device_desc = { > .bLength = sizeof device_desc,
yes I thought about that as well: in fact the trace I made available already had that modification in place. (it also has the queue length increased to 20 - no more changes after those two) for simplicity -and to have a common test vehicle- I'll capture a trace using the g_mass_storage (last time I run that check the performance numbers were exactly the same though). To use g_printer I wrote a small application service on the device side (I can push it to the same place I put the previous log if you want? let me know) -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
