MIDI: Is ALSA sequencer mode faster than JACK midibridge?

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From what I've found on the web, ALSA MIDI is more direct than JACK MIDI, and the latter can add to latency. Is this factual?

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only for the physical (hardware) MIDI device interfaces it might be a point as the JACK-MIDI bridge have to interface with them in the first place, obviously; beyond that, JACK-MIDI is sample-accurate and jitter-free ie. immune to scheduling latency, for which ALSA MIDI/sequencer clients might be allegedly vulnerable (specially on high system loads and some lousy system timer resolution settings; not-a-problem if using HR timers which is the default on most modern kernel builds anyway).

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