Re: Fedora fun 517438: Bulk crowds out ISO?

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On Fri, Dec 04, 2009 at 12:46:57PM -0700, Pete Zaitcev wrote:
> I fancied to look what Fedora users stepped on while I wasn't looking,
> and boy, isn't that fun. Going to post a bunch, I think. Here's one:
> 
> A user found that copying to a USB disk crowds out ISO transfers
> to audio. How is this even possible?
> 
> https://bugzilla.redhat.com/show_bug.cgi?id=517438
> 
> > Whilst starting a Torrent with Transmission on a VFAT USB hard drive, audio
> > (through a USB 5.1 sound card) started skipping like nobody's business.
> 
> > ALSA sound/usb/usbaudio.c:882: cannot submit datapipe for urb 0, error -28: not enough bandwidth
> > ALSA sound/usb/usbaudio.c:882: cannot submit datapipe for urb 0, error -28: not enough bandwidth
> 
> On 2.6.31-rc5-git2.

That should be normal, bulk is taking up the bandwidth for the bus, so
iso can't be scheduled.

Or am I missing something?

thanks,

greg k-h
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