Ming Lei wrote: > On Mon, Jul 1, 2013 at 9:06 PM, Clemens Ladisch <clemens@xxxxxxxxxx> wrote: >> Ming Lei wrote: >>> I understand the latency is effected by packet count in one URB, >>> and it shouldn't be related with URB count, >> >> This is true only when capturing. For playback, the latency is the >> length of the entire pipeline. > > For playback, every URB submitted is added into hw table > immediately, then the data will be played to speaker. I don't > understand why the latency is the entire pipeline. A submitted packet will be transmitted only after all the other packets in the pipeline have been transmitted. Regards, Clemens -- 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
