On Wed, Sep 5, 2012 at 5:37 PM, Clemens Ladisch <clemens@xxxxxxxxxx> wrote: >> On Tue, 4 Sep 2012, Jassi Brar wrote: >>If we progress the h/w pointer of ALSA ring buffer at URB completion (and not at URB submission) this shouldn't affect the latency. > > How would this make any difference? The time between the application > writing samples to the buffer and the samples actually being played by > the device would not change. > If we advance the pointer immediately after submission, the total time a sample spends in flight is ring-buffer + queue length. If we advance the pointer upon completion, the total time a sample spends in flight is ring-buffer. Or I am doped. Cheers -- 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
