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] [33.3% done] [ 15364/ 60632 kb/s] [eta 00m:06s]
Threads: 3: [mmF] [36.4% done] [  8104/ 34760 kb/s] [eta 00m:07s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15674, got signal=6
Threads: 2: [_mF] [50.0% done] [  1509/ 38489 kb/s] [eta 00m:05s]
Threads: 2: [_mF] [66.7% done] [  1056/ 15952 kb/s] [eta 00m:03s]
Threads: 2: [_mF] [63.6% done] [   520/     0 kb/s] [eta 00m:04s]
Threads: 2: [_mF] [61.5% done] [   912/     0 kb/s] [eta 00m:05s]
Threads: 2: [_mF] [64.3% done] [  1076/     0 kb/s] [eta 00m:05s]
Threads: 2: [_FF] [100.0% done] [   408/  6496 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] [68.4% done] [  8896/     0 kb/s] [eta 00m:06s]
Threads: 2: [_VV] [87.5% done] [ 63868/     0 kb/s] [eta 00m:02s]
Threads: 2: [_VV] [100.0% done] [ 61964/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=15674
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=3.1%, 2=80.9%, 4=3.6%, 8=12.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=76.8%, 4=7.9%, 10=1.0%, 20=0.1%, 50=0.7%, 100=6.8%
     lat (msec): 250=6.2%, 500=0.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15675
  read : io=100MiB, bw=6,639KiB/s, runt= 15793msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  399, avg=49.31, stdev=84.22
    bw (KiB/s) : min=   15, max=33693, per=53.38%, avg=7762.28, stdev=10581.87
  write: io=72,968KiB, bw=5,714KiB/s, runt= 13076msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  271, avg= 2.66, stdev=17.93
    bw (KiB/s) : min=    0, max=59714, per=89.02%, avg=16738.20, stdev=25400.74
  cpu          : usr=10.11%, sys=4.43%, ctx=4630
  IO depths    : 1=8.8%, 2=51.9%, 4=22.1%, 8=17.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=45.3%, 4=6.8%, 10=27.8%, 20=2.3%, 50=0.4%, 100=6.4%
     lat (msec): 250=7.1%, 500=3.7%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15676
  read : io=100MiB, bw=6,722KiB/s, runt= 15594msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  174, avg=17.20, stdev=29.72
    bw (KiB/s) : min=    9, max=42552, per=122.14%, avg=17761.70, stdev=16352.27
  write: io=84,352KiB, bw=6,603KiB/s, runt= 13080msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  107, avg= 0.87, stdev= 4.62
    bw (KiB/s) : min=    0, max=60687, per=194.69%, avg=36606.25, stdev=29250.23
  cpu          : usr=11.83%, sys=4.75%, ctx=4446
  IO depths    : 1=9.3%, 2=54.9%, 4=25.2%, 8=10.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=46.2%, 4=6.5%, 10=36.1%, 20=1.0%, 50=3.7%, 100=4.0%
     lat (msec): 250=2.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=219MiB, aggrb=14,542KiB/s, minb=0KiB/s, maxb=6,722KiB/s, mint=15594msec, maxt=15793msec
  WRITE: io=235MiB, aggrb=18,802KiB/s, minb=0KiB/s, maxb=6,603KiB/s, mint=15594msec, maxt=15793msec

Disk stats (read/write):
  cciss!c0d0: ios=2722/3275, merge=23480/56745, ticks=201728/1380176, in_queue=1581904, util=98.15%
4.74user 1.84system 0:16.14elapsed 40%CPU (0avgtext+0avgdata 0maxresident)k
546544inputs+480424outputs (0major+2432minor)pagefaults 0swaps