limitations of using multiple RTL-SDR dongles simultaneously

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Steve Markgraf steve at steve-m.de
Mon Jan 8 21:42:47 UTC 2018


Hi Oliver,

On 08.01.2018 22:37, Olivier SCHMITT wrote:
> Is this a limitation of the RTL-SDR library or the kernel driver?
> Do we have a solution to get around the problem?

This is a limitation of the Kernel, as the maximum usbfs buffer size
is set to 16 MB by default.
In order to disable this limit, do the following:

echo 0 > /sys/module/usbcore/parameters/usbfs_memory_mb

Regards,
Steve



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