[javax-usb-devel] speed of submitting UsbIrp to an iso pipe

[Charles Chen]

Hi, Dan,
Do you mean I should use Irp list? Here is my code below, but the time for 
submitting the list is 240ms. Do I misunderstand something? Thanks for help.

                                List usbIrpList = new ArrayList();
                                int nBuffer = 20;
                                for (int i = 0; i < nBuffer; i++) {
                                        byte[] buffer = new 
byte[wMaxPacketSize];
                                        UsbIrp usbIrp = pipe.createUsbIrp();
                                        usbIrp.setData(buffer);
                                        usbIrpList.add(usbIrp);
                                }
                                long startT = System.currentTimeMillis();
                                pipe.syncSubmit(usbIrpList);
                                long endT = System.currentTimeMillis();
                                System.out.println("count=" + count + ", time=" 
+ (endT - startT));

Charles Chen

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