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Re: [Qemu-devel] [PATCH] usb: selective endpoint initialization


From: Gerd Hoffmann
Subject: Re: [Qemu-devel] [PATCH] usb: selective endpoint initialization
Date: Tue, 03 Jul 2012 13:55:37 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:10.0.5) Gecko/20120601 Thunderbird/10.0.5

On 07/03/12 13:39, Jan Kiszka wrote:
> On 2012-07-03 11:17, Gerd Hoffmann wrote:
>>   Hi,
>>
>>> BTW, there are still plenty of "husb: out of buffers for iso stream"
>>> messages. Can we do anything about it, or does the the guest selects too
>>> few buffers here (for a virtualized setup)?
>>
>> Try increase isobufs (usb-host property, default is 4).
> 
> I gave up at isobufs=10000 - it apparently has no influence on this issue.
>
> Rather, it looks like it is triggered when some sound effect played by
> Windows ends (e.g. the feedback on volume changes).

Makes sense.  /me should probably turn those messages into
usb_host_iso_* tracepoints so usb-host is quiet by default.

cheers,
  Gerd




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