Re: [LAD] ALSA MIDI latency test results are far away from reality

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From: Robin Gareus <robin@...>

To: Ralf Mardorf <ralf.mardorf@...>

Cc: 64studio-devel <64studio-devel@...>, Linux-Audio-Dev <linux-audio-dev@...>

Subject: Re: [LAD] ALSA MIDI latency test results are far away from reality

Date: Wednesday, July 14, 2010 - 1:45 pm

On 07/14/2010 03:23 PM, Ralf Mardorf wrote:

quoted text

> [..]
> AND IT'S AUDIBLE THAT THERE IS MUCH MORE JITTER BUT 1.1 ms.
>
> Any hints how to solve this are welcome.

Did you try to start jackd with -p64 instead of -p1024

using JACK-midi, I've encountered a similar issue with fluidsynth always
synchronizing note-start/ends to jack cycles.

Simply lowering the frames-per-period got me playing again so I did not
check if it's related to JACK-midi or FluidSynth 1.1.1 in general.

ciao,
robin

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Messages in current thread:

[LAD] ALSA MIDI latency test results are far away from reality, Ralf Mardorf, (Wed Jul 14, 1:23 pm)

Re: [LAD] ALSA MIDI latency test results are far away from r..., Niels Mayer, (Thu Jul 15, 5:07 pm)

Re: [LAD] ALSA MIDI latency test results are far away from r..., Robin Gareus, (Wed Jul 14, 7:46 pm)

Re: [LAD] ALSA MIDI latency test results are far away from r..., Ralf Mardorf, (Wed Jul 14, 8:32 pm)

Re: [LAD] ALSA MIDI latency test results are far away from r..., Ralf Mardorf, (Wed Jul 14, 8:16 pm)

Re: [LAD] ALSA MIDI latency test results are far away from r..., Ralf Mardorf, (Wed Jul 14, 8:24 pm)

[LAD] Tests directly routing pc's midi-in to midi-out (was: ..., Arnout Engelen, (Wed Jul 14, 5:56 pm)

Re: [LAD] Tests directly routing pc's midi-in to midi-out (w..., Ralf Mardorf, (Wed Jul 14, 6:09 pm)

Re: [LAD] Tests directly routing pc's midi-in to midi-out, Clemens Ladisch, (Thu Jul 15, 6:26 am)

Re: [LAD] Tests directly routing pc's midi-in to midi-out, Ralf Mardorf, (Thu Jul 15, 8:41 am)

Re: [LAD] Tests directly routing pc's midi-in to midi-out, Arnout Engelen, (Thu Jul 15, 9:48 am)

Re: [LAD] Tests directly routing pc's midi-in to midi-out, Ralf Mardorf, (Thu Jul 15, 10:18 am)

Re: [LAD] Tests directly routing pc's midi-in to midi-out, Clemens Ladisch, (Thu Jul 15, 10:55 am)

Re: [LAD] Tests directly routing pc's midi-in to midi-out, Ralf Mardorf, (Thu Jul 15, 11:08 am)

Re: [LAD] Tests directly routing pc's midi-in to midi-out, Robin Gareus, (Thu Jul 15, 11:45 am)

Re: [LAD] Tests directly routing pc's midi-in to midi-out, Clemens Ladisch, (Thu Jul 15, 2:31 pm)

Re: [LAD] Tests directly routing pc's midi-in to midi-out, Ralf Mardorf, (Thu Jul 15, 12:45 pm)

Re: [LAD] Tests directly routing pc's midi-in to midi-out, Robin Gareus, (Thu Jul 15, 1:36 pm)

Re: [LAD] Tests directly routing pc's midi-in to midi-out, Ralf Mardorf, (Thu Jul 15, 10:49 am)

Re: [LAD] Tests directly routing pc's midi-in to midi-out (w..., Arnout Engelen, (Wed Jul 14, 7:37 pm)

Re: [LAD] Tests directly routing pc's midi-in to midi-out (w..., Ralf Mardorf, (Wed Jul 14, 9:21 pm)

Re: [LAD] Tests directly routing pc's midi-in to midi-out (w..., Ralf Mardorf, (Wed Jul 14, 9:29 pm)

Re: [LAD] Tests directly routing pc's midi-in to midi-out (w..., , (Wed Jul 14, 9:43 pm)

Re: [LAD] Tests directly routing pc's midi-in to midi-out (w..., Ralf Mardorf, (Wed Jul 14, 9:55 pm)

Re: [LAD] Tests directly routing pc's midi-in to midi-out (w..., Arnout Engelen, (Thu Jul 15, 6:23 am)

Re: [LAD] Tests directly routing pc's midi-in to midi-out (w..., , (Wed Jul 14, 10:46 pm)

Re: [LAD] Tests directly routing pc's midi-in to midi-out (w..., Ralf Mardorf, (Wed Jul 14, 11:46 pm)

Re: [LAD] Tests directly routing pc's midi-in to midi-out (w..., , (Thu Jul 15, 8:07 am)

Re: [LAD] Tests directly routing pc's midi-in to midi-out (w..., Ralf Mardorf, (Wed Jul 14, 11:15 pm)

Re: [LAD] Tests directly routing pc's midi-in to midi-out (w..., Arnold Krille, (Thu Jul 15, 7:57 am)

Re: [LAD] Tests directly routing pc's midi-in to midi-out (w..., Ralf Mardorf, (Fri Jul 16, 9:26 am)

Re: [LAD] Tests directly routing pc's midi-in to midi-out (w..., Arnold Krille, (Fri Jul 16, 9:47 am)

Re: [LAD] Tests directly routing pc's midi-in to midi-out, Robin Gareus, (Fri Jul 16, 11:26 am)

Re: [LAD] Tests directly routing pc's midi-in to midi-out, Ralf Mardorf, (Fri Jul 16, 11:30 am)

Re: [LAD] Tests directly routing pc's midi-in to midi-out (w..., Ralf Mardorf, (Fri Jul 16, 10:06 am)

Re: [LAD] Tests directly routing pc's midi-in to midi-out (w..., drew Roberts, (Fri Jul 16, 11:02 am)

Re: [LAD] Tests directly routing pc's midi-in to midi-out (w..., Ralf Mardorf, (Fri Jul 16, 11:23 am)

Re: [LAD] Tests directly routing pc's midi-in to midi-out (w..., Arnold Krille, (Fri Jul 16, 10:19 am)

Re: [LAD] Tests directly routing pc's midi-in to midi-out (w..., Ralf Mardorf, (Fri Jul 16, 10:46 am)

Re: [LAD] Tests directly routing pc's midi-in to midi-out (w..., Ralf Mardorf, (Fri Jul 16, 10:50 am)

Re: [LAD] Tests directly routing pc's midi-in to midi-out (w..., , (Thu Jul 15, 7:57 am)

Re: [LAD] ALSA MIDI latency test results are far away from r..., Clemens Ladisch, (Wed Jul 14, 1:52 pm)

Re: [LAD] ALSA MIDI latency test results are far away from r..., Ralf Mardorf, (Wed Jul 14, 3:11 pm)

Re: [LAD] ALSA MIDI latency test results are far away from r..., Paul Davis, (Wed Jul 14, 2:53 pm)

Re: [LAD] ALSA MIDI latency test results are far away from r..., Ralf Mardorf, (Wed Jul 14, 3:21 pm)

Re: [LAD] ALSA MIDI latency test results are far away from r..., Ralf Mardorf, (Wed Jul 14, 3:24 pm)

Re: [LAD] ALSA MIDI latency test results are far away from r..., Ralf Mardorf, (Wed Jul 14, 3:27 pm)

Re: [LAD] ALSA MIDI latency test results are far away from r..., Robin Gareus, (Wed Jul 14, 3:40 pm)

Re: [LAD] ALSA MIDI latency test results are far away from r..., Robin Gareus, (Wed Jul 14, 1:45 pm)

Re: [LAD] ALSA MIDI latency test results are far away from r..., Ralf Mardorf, (Wed Jul 14, 2:22 pm)

Re: [LAD] ALSA MIDI latency test results are far away from r..., Robin Gareus, (Wed Jul 14, 3:31 pm)

Re: [LAD] ALSA MIDI latency test results are far away from r..., Ralf Mardorf, (Wed Jul 14, 5:58 pm)

Re: [LAD] ALSA MIDI latency test results are far away from r..., Robin Gareus, (Wed Jul 14, 7:43 pm)

Re: [LAD] ALSA MIDI latency test results are far away from r..., Ralf Mardorf, (Wed Jul 14, 8:08 pm)