On Thu, Feb 14, 2002 at 09:54:58AM -0600, Matthew Fredrickson wrote:
>
> I just did some testing with the kernel I upgraded to a little bit ago
> (2.4.17), and have some improved results. I now get basically the same
> ISOC performance from both UHCI drivers (not bad, but not
> perfect). However, on the usb-uhci driver, I get a little bit more debug
> info. Whenever there's a gap in the audio, I get a printk that says:
>
> usb-uhci.c: iso_find_start: gap in seamless isochronous scheduling
>
> (This is on the VIA chipset UHCI controller)
>
> Does this help any?
Well, it says, that the just finished isn't restarted early enough, so a gap
occurs. You should think about either larger transfer buffers (i.e. transfer
more frames with one URB) or more than two URBs.
--
Georg Acher, [EMAIL PROTECTED]
http://www.in.tum.de/~acher/
"Oh no, not again !" The bowl of petunias
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