[linux-dvb] Slow control data from dvb-usb (VP7045)
jnysen-linux-dvb at triaptic.com.au
Mon Nov 28 03:20:26 CET 2005
The control data requests for dvb-usb devices (I'm testing with a VP7045
device) is quite slow. Each request can take a few hundred milliseconds
to complete and return data. This gets longer when multiple data bytes
are requested from the frontend. eg. generating 3 requests for 3
register bytes of AGC information for the MT352 in the device can take a
whole second. If I perform 6 requests it takes twice as long.
This is not an inherent problem in the device, as these operations are
fast under MS Windows.
Has anyone noticed this and/or is there an existing fix?
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