On Mon, 2020-03-16 at 09:42 +0100, Takashi Iwai wrote: > Thanks for the patches and the analysis. > > So, judging from the experiments above, outqueue=1 has no measurable > performance regression? For 4 ports, it's even an improvement. > Then we may change the default value. > > I guess you kept the old value just to be conservative, but if the > number tells a better story and it's no part or ABI, we may consider > changing the default for a better performance. > > Or, is there any other potential risk by changing this? > I'm very careful here. MIDI based equipment (and that includes MIDI interfaces) is typically very long lived (I do have equipment that is more than 20 years old). Thus I cannot guarantee that changed defaults will not harm performance of older equipment. I do prefer to keep the current defaults and allow users to, well, experiment if modifications to the defaults do work and actually help for their hardware. I would not want to break usability of older hardware. Regards -- Andreas Steinmetz
