Ozonic on Debian 11 linux 5.10.40 (non rt and rt) via firewire (JMicron Technology Corp. IEEE 1394) on ROG STRIX B350 F GAMING motherboard

on non-realtime kernel 5.10.40-1

> alsa-midi-latency-test 0.0.5
> running on Linux release 5.10.0-7-amd64 (version #1 SMP Debian 5.10.40-1 (2021-05-28)) on x86_64
> clock resolution: 0.000000001 s

> sampling 10000 midi latency values - please wait ...
> press Ctrl+C to abort test

sample; latency_ms; latency_ms_worst
     0;     30.384;     30.384     
     1;     39.933;     39.933     
     2;     39.973;     39.973     
     3;     39.984;     39.984     
     4;     40.006;     40.006     
    24;     40.022;     40.022     
    64;     40.036;     40.036     
   133;     40.058;     40.058     
   140;     40.059;     40.059     
   188;    320.008;    320.008     
  6572;    329.942;    329.942     
  9999;     39.882;    329.942     
> done.

> latency distribution:
...
 30.4 - 30.5 ms:        1 #
...
 35.6 - 35.7 ms:        1 #
...
 36.3 - 36.4 ms:        1 #
...
 37.2 - 37.3 ms:        1 #
...
 38.2 - 38.3 ms:        1 #
...
 38.5 - 38.6 ms:        2 #
...
 39.0 - 39.1 ms:        1 #
...
 39.2 - 39.3 ms:        1 #
...
 39.4 - 39.5 ms:        1 #
 39.5 - 39.6 ms:        1 #
 39.6 - 39.7 ms:        2 #
 39.7 - 39.8 ms:        3 #
 39.8 - 39.9 ms:      731 #######
 39.9 - 40.0 ms:     1729 ################
 40.0 - 40.1 ms:     5387 ##################################################
 40.1 - 40.2 ms:     1899 ##################
 40.2 - 40.3 ms:      110 #
 40.3 - 40.4 ms:        1 #
 40.4 - 40.5 ms:        1 #
 40.5 - 40.6 ms:        1 #
 40.6 - 40.7 ms:        1 #
 40.7 - 40.8 ms:        1 #
...
 41.4 - 41.5 ms:        1 #
 41.5 - 41.6 ms:        1 #
...
 41.8 - 41.9 ms:        1 #
...
 42.8 - 42.9 ms:        1 #
...
 43.7 - 43.8 ms:        1 #
...
 44.4 - 44.5 ms:        1 #
...
309.8 -309.9 ms:        1 #
309.9 -310.0 ms:        4 #
310.0 -310.1 ms:        1 #
...
319.8 -319.9 ms:        1 #
319.9 -320.0 ms:       70 #
320.0 -320.1 ms:       39 #
...
329.9 -330.0 ms:        1 #

> FAIL

 best latency was 30.38 ms
 worst latency was 329.94 ms, which is too much.

on realtime kernel 5.10.40-1-rt:

> alsa-midi-latency-test 0.0.5
> running on Linux release 5.10.0-7-rt-amd64 (version #1 SMP PREEMPT_RT Debian 5.10.40-1 (2021-05-28)) on x86_64
> clock resolution: 0.000000001 s

> sampling 10000 midi latency values - please wait ...
> press Ctrl+C to abort test

sample; latency_ms; latency_ms_worst
     0;     34.810;     34.810     
     1;     39.817;     39.817     
     2;     40.134;     40.134     
     4;     40.157;     40.157     
    15;    319.941;    319.941     
    22;    319.960;    319.960     
    29;    319.980;    319.980     
    36;    319.982;    319.982     
   760;    320.004;    320.004     
  4458;    320.020;    320.020     
  7305;    329.793;    329.793     
  9999;     39.998;    329.793     
> done.

> latency distribution:
...
 34.8 - 34.9 ms:        1 #
...
 39.8 - 39.9 ms:      401 ###
 39.9 - 40.0 ms:     1353 ##########
 40.0 - 40.1 ms:     6559 ##################################################
 40.1 - 40.2 ms:     1540 ############
 40.2 - 40.3 ms:       23 #
...
309.9 -310.0 ms:        1 #
...
310.1 -310.2 ms:        1 #
...
319.9 -320.0 ms:       64 #
320.0 -320.1 ms:       56 #
...
329.8 -329.9 ms:        1 #

> FAIL

 best latency was 34.81 ms
 worst latency was 329.79 ms, which is too much.