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> Have you ever considered how many TDs have to be allocated to transfer > a data buffer this big? No, seriously. If your application cannot deliver > the tranfer speeds with 16KB URBs, we ought to consider if the combination > of our USB stack, usbfs, libusb and the application ought to get serious > performance enhancing surgery. The problem is obviously in the software > overhead. If you queue a large number of 16KB urbs, rather than one jumbo urb, does that make any difference to the number of TDs allocated? I thought TDs were allocated for all queued urbs at the moment they are queued... Ciao, Duncan. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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