On Mon, 10 Jan 2011 13:23:46 -0800 Donna Rigas <donna.rigas@xxxxxxxxx> wrote: > Can anyone tell me how to change the rx and tx fifo sizes for a USB > virtual serial port? We're trying to run at high effective baud rates > (would like to utilize the full 12mbps of our USB 1.1 device), and > servicing a read routine at 16Hz. Initial investigations reveal what > looks like a buffer size of PAGE_SIZE (but we may have looked in the > wrong area), or 4K. We can't easily service the read routine faster than > 16Hz, which if our math is right, that means we'll average 7500 byte > reads if we utilize 100% of the throughput. On the host side, we're > using the cdc_acm driver, and on the device side (if it matters at all), > we're using LPCUSB. Which kernel version ? -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
