On Mon, 16 Mar 2020 11:45:41 +0100, Andreas Steinmetz wrote: > > 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. OK. Unless Clemens has any objection, I'm going to take your patches as-is, then. thanks, Takashi