On 10-06-21 08:42 AM, Daniel James wrote: > Hi Ralf, > >>> FAIL >> >> best latency was 1.29 ms >> worst latency was 7.00 ms, which is too much. > > Thanks for running those tests, that's very helpful. > > I'd be interested to know if other users can 'pass' this test using our > current distros and kernels. If not, it seems like we have some more > tweaking to do :-) > Those values are what you can expect with USB MIDI. If you have no choice but to use USB gear then try to minimize the number of USB devices that are in use. For example use PS/2 based HIDs (aka keyboard and mouse). Disconnect any other USB devices (such as printers and scanners).
Even doing that I do not think that there is much room for improvement. In the next couple of days I will try and test my own rig with the RME and USB MIDI interfaces.
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