On Mon, 22 May 2006, aermongk wrote: > Hi USB guru, > > Here is the update on my testing. I went out and bought 2 more USB > wireless devices > with different chipset. The original device is DLink DWL-G122 with > Ralink chip > and new device is DLink DWL-AG132 which has Atheros chip. This is to > make sure > that I am using different driver for each device. I then hooked both > DWL-G122 and > DWL-AG132 up to a PC and installed their driver and did the same to > another PC. > Run one channel at a time with ttcp, speed is good as expected. Again, > when I ran > both of them simultaneously, their speed drop again, same result as my first > experiment. > > I couldn't explain why when I ran Wireless + Flash devices simultaneous, > the wireless > speed didn't drop (Hope I didn't do anything wrong here. Basically, I > just copied a > large file to Flash device (cp command followed by sync command) and at > the same > time run "ttcp"). But when I ran 2 different Wireless devices, > their speed dropped. > Any suggestion?
No. This merely suggests that the slowdown isn't caused by anything in the USB stack. > BTW, Alan, do you have chance to look at the usbmon files I sent you? I > tried to post my > zip file to the forum but got rejected. I browse through them and > didn't spot anything. I did look at them. Apparently you missed my response: http://marc.theaimsgroup.com/?l=linux-usb-users&m=114796416906901&w=2 Alan Stern ------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
