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
Threads: 3
Threads: 3
Threads: 3
Threads: 3
Threads: 3
Threads: 3: [mmm] [5.0% done] [ 11548/  2060 kb/s] [eta 00m:57s]
Threads: 3: [mmm] [6.7% done] [ 12426/ 10494 kb/s] [eta 00m:56s]
Threads: 3: [mmm] [10.9% done] [ 16965/  4421 kb/s] [eta 00m:41s]
Threads: 3: [mmm] [15.0% done] [  4421/ 15899 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [18.9% done] [ 15639/  4319 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [22.5% done] [ 16050/  3550 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [26.3% done] [ 15102/  2782 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [30.6% done] [  8257/  9395 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [33.3% done] [ 10331/  6532 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [36.1% done] [  8744/  5692 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [40.0% done] [ 11036/  5717 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [44.1% done] [  5180/  9479 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [47.1% done] [ 11014/  4531 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [50.0% done] [  8005/  4006 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [54.5% done] [ 10176/  2684 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [55.9% done] [  8322/  2190 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [58.8% done] [  4775/  4828 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [60.0% done] [  4754/  3591 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [62.9% done] [  4535/  4750 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [63.9% done] [  4348/  2741 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=28600, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=28599, got signal=6
Threads: 1: [m__] [64.9% done] [  4323/  3197 kb/s] [eta 00m:13s]
Threads: 1: [V__] [80.6% done] [ 19666/  2086 kb/s] [eta 00m:06s]
Threads: 1: [V__] [100.0% done] [ 31698/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=28598
  read : io=100MiB, bw=4,004KiB/s, runt= 26080msec
    slat (msec): min=    0, max=   17, avg= 0.02, stdev= 0.58
    clat (msec): min=    0, max= 3507, avg=74.38, stdev=242.92
    bw (KiB/s) : min=   45, max=34383, per=58.38%, avg=5605.38, stdev=8355.58
  write: io=50,892KiB, bw=2,130KiB/s, runt= 24459msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=   15, max=  539, avg=102.18, stdev=53.89
    bw (KiB/s) : min=    0, max= 7678, per=70.33%, avg=3330.23, stdev=2647.28
  cpu          : usr=0.51%, sys=1.26%, ctx=8833
  IO depths    : 1=0.2%, 2=2.6%, 4=20.9%, 8=76.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=1.3%, 10=11.8%, 20=10.9%, 50=16.7%, 100=27.7%
     lat (msec): 250=29.4%, 500=0.5%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=28599
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.5%, 8=94.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.8%, 50=7.8%, 100=43.4%
     lat (msec): 250=44.6%, 500=1.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=28600
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=4.7%, 8=95.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.4%, 50=9.7%, 100=44.8%
     lat (msec): 250=43.7%, 500=0.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=239MiB, aggrb=9,601KiB/s, minb=0KiB/s, maxb=4,004KiB/s, mint=0msec, maxt=26080msec
  WRITE: io=110MiB, aggrb=4,735KiB/s, minb=0KiB/s, maxb=2,130KiB/s, mint=0msec, maxt=26080msec

Disk stats (read/write):
  cciss!c0d0: ios=4588/3841, merge=799/12539, ticks=47976/572792, in_queue=585180, util=99.77%
0.54user 0.82system 0:26.36elapsed 5%CPU (0avgtext+0avgdata 0maxresident)k
489320inputs+226256outputs (0major+2469minor)pagefaults 0swaps