On Tue, 20 Jun 2006 02:13:29 +0300
Uplink wrote:

> Salut,
> 
> Din cate stiti voi, e posibil sa reduc rezervarea de banda a unui
> dispozitiv USB sub Linux? Spre exemplu doua webcamuri pt. care
> driverele fac transferuri isocrone (isochronous transfers), ceea ce
> inseamna, cf. Wikipedia (http://en.wikipedia.org/wiki/Usb), ca
> mananca atata banda cat vor muschii device-ului, garantat. As vrea sa
> fac override la garantarea asta de banda si sa-i dau doar cat vreau
> eu, considerandu-ma deplin responsabil pt. actiunile mele. Driverele
> nu par sa suporte transferuri bulk.
> 

Nu cred ca face ce vrei tu dar:

Enforce USB bandwidth allocation (EXPERIMENTAL) (USB_BANDWIDTH)

If you say Y here, the USB subsystem enforces USB bandwidth
allocation and will prevent some device opens from succeeding
if they would cause USB bandwidth usage to go above 90% of
the bus bandwidth.

If you say N here, these conditions will cause warning messages
about USB bandwidth usage to be logged and some devices or
drivers may not work correctly.





-- 
Mihai Voica

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