fio: (g=0): rw=randrw, bs=4K-256K/4K-256K, ioengine=posixaio, iodepth=8
...
fio: (g=0): rw=randrw, bs=4K-256K/4K-256K, ioengine=posixaio, iodepth=8
Starting 3 threads
Threads: 3
Threads: 3
Threads: 3: [mmm] [50.0% done] [ 14484/ 76038 kb/s] [eta 00m:03s]
Threads: 3: [mmm] [50.0% done] [ 11653/ 25255 kb/s] [eta 00m:04s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=31626, got signal=6
Threads: 2: [_mF] [71.4% done] [  4116/ 42643 kb/s] [eta 00m:02s]
Threads: 2: [_FF] [100.0% done] [   394/   105 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_VV] [70.0% done] [  5063/     0 kb/s] [eta 00m:06s]
Threads: 2: [_VV] [88.2% done] [ 65613/     0 kb/s] [eta 00m:02s]
Threads: 2: [_VV] [100.0% done] [ 62367/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=31626
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=79.2%, 4=4.5%, 8=16.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=63.9%, 4=15.0%, 10=2.7%, 20=0.4%, 50=2.5%, 100=9.7%
     lat (msec): 250=5.6%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=31627
  read : io=100MiB, bw=6,359KiB/s, runt= 16486msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  219, avg=28.25, stdev=39.52
    bw (KiB/s) : min=    3, max=33636, per=89.54%, avg=12384.87, stdev=12683.43
  write: io=73,248KiB, bw=5,426KiB/s, runt= 13823msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  116, avg= 1.42, stdev= 8.07
    bw (KiB/s) : min=    0, max=26054, per=82.20%, avg=14640.25, stdev=12096.38
  cpu          : usr=9.37%, sys=4.88%, ctx=6444
  IO depths    : 1=8.0%, 2=47.0%, 4=25.6%, 8=19.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=44.2%, 4=13.0%, 10=17.5%, 20=4.9%, 50=6.6%, 100=8.2%
     lat (msec): 250=5.5%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=31628
  read : io=100MiB, bw=6,320KiB/s, runt= 16589msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  270, avg=22.40, stdev=39.93
    bw (KiB/s) : min=   24, max=38207, per=101.68%, avg=14062.79, stdev=15061.92
  write: io=84,104KiB, bw=6,230KiB/s, runt= 13823msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  129, avg= 1.45, stdev= 7.40
    bw (KiB/s) : min=    0, max=25576, per=86.52%, avg=15408.50, stdev=11346.76
  cpu          : usr=11.02%, sys=5.69%, ctx=5851
  IO depths    : 1=3.2%, 2=59.2%, 4=23.8%, 8=13.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=47.1%, 4=19.3%, 10=17.9%, 20=3.9%, 50=1.0%, 100=6.8%
     lat (msec): 250=3.8%, 500=0.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=219MiB, aggrb=13,831KiB/s, minb=0KiB/s, maxb=6,359KiB/s, mint=16486msec, maxt=16589msec
  WRITE: io=235MiB, aggrb=17,810KiB/s, minb=0KiB/s, maxb=6,230KiB/s, mint=16486msec, maxt=16589msec

Disk stats (read/write):
  cciss!c0d0: ios=2910/3351, merge=25916/56660, ticks=208332/1414756, in_queue=1623356, util=97.56%
4.86user 2.22system 0:16.91elapsed 41%CPU (0avgtext+0avgdata 0maxresident)k
543336inputs+480944outputs (0major+2450minor)pagefaults 0swaps