Try editing the javax.usb.properties file and change both the
com.ibm.jusb.os.linux.LinuxUsbServices.topologyUpdateDelay
and
com.ibm.jusb.os.linux.LinuxUsbServices.topologyUpdateNewDeviceDelay
properties to 0 (or a small number, it's in ms).
Those are from the days of a less robust Linux USB subsystem, when
immediately talking to devices after they were plugged in caused problems
with the hub driver and/or other drivers. Things may be better with newer
kernels but using "forceClaim" immediately probably will still cause
problems :(
Let me know if that speeds it up or not...
On Wed, 21 Sep 2005, Elliotte Harold wrote:
>I've written a very simple program to find all the USB devices connected
>to a system:
>
>import java.util.*;
>import javax.usb.*;
>
>public class USBLister {
>
> public static void main(String[] args) throws UsbException {
> UsbServices services = UsbHostManager.getUsbServices();
> UsbHub root = services.getRootUsbHub();
> listDevices(root);
> }
>
> public static void listDevices(UsbHub hub) {
> List devices = hub.getAttachedUsbDevices();
> Iterator iterator = devices.iterator();
> while (iterator.hasNext()) {
> UsbDevice device = (UsbDevice) iterator.next();
> System.out.println(device);
> if (device.isUsbHub()) {
> listDevices((UsbHub) device);
> }
> }
> }
>}
>
>What surprises me is how long this program takes to run. It's on the
>order of 10 seconds. There are only two devices connected to the system.
>What's happening that's taking so long? Where is the time going?
>
>
--
Dan Streetman
[EMAIL PROTECTED]
---------------------
186,272 miles per second:
It isn't just a good idea, it's the law!
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