> I am trying to send 64 byte packets from a linux host into a device at > the rate of 4000 packets/second
If that rate is critical, then it should be a periodic transfer ... likely an "interrupt" transfer. > it is a bulk endpoint > i submit one URB per packet > and the device is a modem, packet deliantion is critical Sounds like a badly designed modem. Notice how it won't work right at full speed, since it can't possibly get that same rate. Also, consider that there are many millions of working USB modems that have shipped *without* that oddball 4000 packet/sec requirement. - To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
