On Wed, 1 Jun 2011, Soho Soho123 wrote: > Dear Alan, > > Our platform : > CPU 390MHz, RAM:32MB, > When I reduce fps from 30 to 10, the issue is still occur. Do you mean > "resolution" is key, right? I really meant total bandwidth. That depends partly on resolution and partly on the frame rate. > Or could you kindly teach me to calculate the among of data traffic > between USB and WiFi? > Since I am new in IP Cam. The UVC and MJPG streamer is new for me. My > experience (background) is in networking. Not a lot of knowledge about > USB device (UVC) and EHCI Host. I don't know how uvcvideo works, and I don't know how much data it wants to transfer. However I did notice in the usbmon logs you sent earlier, although the host asks the device for 3072 bytes in each transfer, the device sends only 18 bytes. Alan Stern -- 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