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Date:      Sun, 27 Feb 2022 21:41:03 +0100
From:      Hans Petter Selasky <hps@selasky.org>
To:        Florian Walpen <dev@submerge.ch>, freebsd-multimedia@freebsd.org
Subject:   Re: New FreeBSD port ALSA to JACK MIDI, a2jmidid
Message-ID:  <586816bd-4332-4a0c-ab4b-b798588514ff@selasky.org>
In-Reply-To: <d55c36c9-1151-aea4-4a18-37010b4d3fc8@selasky.org>
References:  <a1f43e5a-5d1f-1980-e771-00a0064f74bb@selasky.org> <22854640.gYbqZ1YImA@z800> <50bd092c-9d5e-645d-2e5a-16a92d83a0db@selasky.org> <5113897.hZNMGjoUbN@z800> <b34efd2e-0a53-27b7-a012-3b2b0d8727b1@selasky.org> <d55c36c9-1151-aea4-4a18-37010b4d3fc8@selasky.org>

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On 2/27/22 21:36, Hans Petter Selasky wrote:
> On 2/27/22 21:29, Hans Petter Selasky wrote:
>> On 2/27/22 18:45, Florian Walpen wrote:
>>> @HPS: Any ideas about the latency introduced by alsa-seq-server / CUSE?
>>
>> Hi,
>>
>> What tools did you use to test?
>>
>> You might want to ktrace the applications in question to see what is 
>> going on.
>>
>> Is this something I could test on my computer?
>>
>> --HPS
>>
> 
> Did you set real-time priority for alsa-seq-server and did you install 
> the very latest version available from ports?
> 

Hi,

One more idea:

Can you make a FIFO "man mkfifo" and add that to the alsa-seq-server 
instance? Then start jack_umidi on that FIFO aswell. What is the result?

You probably need to use aconnect to loop the events.

--HPS




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