====== Jack Latency measurements for the PreSonus 1818VSL ======
~~NOTOC~~

Linux 3.2.35-2 SMP PREEMPT RT, jackdmp 1.9.10

===== Total measured round-trip latency =====

{{ :wiki:latency:latency-1818vsl-abs.png?800 |}}

===== detail zoom-in in above plot =====

{{ :wiki:latency:latency-1818vsl-detail.png?800 |}}

===== difference nominal vs measured latency =====

{{ :wiki:latency:latency-1818vsl-add.png?800 |}}

===== Raw Data =====

  #|      JACK - Settings      |Nominal Lat| Latency 
  #,     -d,    -r,   -p,-n, -S,  cap,  ply, measured                                                                                          
  1,   hw:2, 48000,   32, 2, -S,   32,   32,  175.907
  2,   hw:2, 48000,   32, 2,   ,   32,   64,  206.907
  3,   hw:2, 48000,   32, 3, -S,   32,   64,  207.907
  4,   hw:2, 48000,   32, 3,   ,   32,   96,  239.907
  
  1,   hw:2, 48000,   64, 2, -S,   64,   64,  274.907
  2,   hw:2, 48000,   64, 2,   ,   64,  128,  339.907
  3,   hw:2, 48000,   64, 3, -S,   64,  128,  339.907
  4,   hw:2, 48000,   64, 3,   ,   64,  192,  402.907
  
  1,   hw:2, 48000,  128, 2, -S,  128,  128,  474.907
  2,   hw:2, 48000,  128, 2,   ,  128,  256,  603.907
  3,   hw:2, 48000,  128, 3, -S,  128,  256,  603.907
  4,   hw:2, 48000,  128, 3,   ,  128,  384,  731.907
  
  1,   hw:2, 48000,  256, 2, -S,  256,  256,  875.907
  2,   hw:2, 48000,  256, 2,   ,  256,  512, 1130.907
  3,   hw:2, 48000,  256, 3, -S,  256,  512, 1130.907
  4,   hw:2, 48000,  256, 3,   ,  256,  768, 1387.907
  
  1,   hw:2, 48000,  512, 2, -S,  512,  512, 1681.907
  2,   hw:2, 48000,  512, 2,   ,  512, 1024, 2193.907
  3,   hw:2, 48000,  512, 3, -S,  512, 1024, 2192.907
  4,   hw:2, 48000,  512, 3,   ,  512, 1536, 2704.907
  
  1,   hw:2, 48000, 1024, 2, -S, 1024, 1024, 3221.907
  2,   hw:2, 48000, 1024, 2,   , 1024, 2048, 4244.907
  3,   hw:2, 48000, 1024, 3, -S, 1024, 2048, 4245.907
  4,   hw:2, 48000, 1024, 3,   , 1024, 3072, 5269.907
  
  1,   hw:2, 48000, 2048, 2, -S, 2048, 2048, 5220.907
  2,   hw:2, 48000, 2048, 2,   , 2048, 4096, 7316.907
  3,   hw:2, 48000, 2048, 3, -S, 2048, 4096, 7269.907
  4,   hw:2, 48000, 2048, 3,   , 2048, 6144, 9316.907