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: [mFm] [15.8% done] [ 10349/     0 kb/s] [eta 00m:16s]
Threads: 3: [mFm] [30.8% done] [  6442/ 25666 kb/s] [eta 00m:09s]
Threads: 3: [mFm] [33.3% done] [  5365/ 23197 kb/s] [eta 00m:10s]
Threads: 3: [mFm] [50.0% done] [  1862/ 44173 kb/s] [eta 00m:06s]
Threads: 3: [mFF] [53.8% done] [  1439/  8285 kb/s] [eta 00m:06s]
Threads: 3: [mFF] [53.3% done] [  1178/     0 kb/s] [eta 00m:07s]
Threads: 2: [m_F] [52.9% done] [  1076/     0 kb/s] [eta 00m:08s]
Threads: 2: [m_F] [62.5% done] [  1106/  9749 kb/s] [eta 00m:06s]
Threads: 2: [m_V] [68.8% done] [ 20390/  8326 kb/s] [eta 00m:05s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17204, got signal=6
Threads: 1: [__V] [100.0% done] [ 40183/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=17204
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=24.7%, 2=41.4%, 4=7.7%, 8=26.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=59.3%, 4=5.4%, 10=2.4%, 20=2.4%, 50=2.8%, 100=6.5%
     lat (msec): 250=15.4%, 500=5.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=17205
  read : io=0KiB, bw=0KiB/s, runt=  8925msec
  write: io=100MiB, bw=11,836KiB/s, runt=  8859msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=    4, avg= 0.51, stdev= 0.95
    bw (KiB/s) : min=    0, max=68501, per=178.21%, avg=43291.67, stdev=37660.65
  cpu          : usr=14.21%, sys=5.47%, ctx=3535
  IO depths    : 1=0.2%, 2=98.7%, 4=1.1%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=85.5%, 4=12.7%, 10=1.2%, 20=0.0%, 50=0.0%, 100=0.0%
     lat (msec): 250=0.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=17206
  read : io=100MiB, bw=8,139KiB/s, runt= 12882msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  375, avg=30.60, stdev=59.77
    bw (KiB/s) : min=    3, max=48118, per=112.45%, avg=12407.53, stdev=15346.96
  write: io=81,196KiB, bw=7,904KiB/s, runt= 10519msec
    slat (msec): min=    0, max=   18, avg= 0.01, stdev= 0.48
    clat (msec): min=    0, max=  209, avg= 1.19, stdev= 8.67
    bw (KiB/s) : min=    0, max=58161, per=87.59%, avg=21279.00, stdev=32066.58
  cpu          : usr=13.26%, sys=6.64%, ctx=6610
  IO depths    : 1=11.3%, 2=51.0%, 4=23.9%, 8=13.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=47.6%, 4=15.0%, 10=22.4%, 20=3.1%, 50=1.7%, 100=2.5%
     lat (msec): 250=7.1%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=136MiB, aggrb=11,034KiB/s, minb=0KiB/s, maxb=8,139KiB/s, mint=8925msec, maxt=12882msec
  WRITE: io=244MiB, aggrb=24,293KiB/s, minb=0KiB/s, maxb=11,836KiB/s, mint=8925msec, maxt=12882msec

Disk stats (read/write):
  cciss!c0d0: ios=2926/2868, merge=602/59294, ticks=32232/1513072, in_queue=1667316, util=98.75%
4.14user 1.79system 0:13.20elapsed 44%CPU (0avgtext+0avgdata 0maxresident)k
346144inputs+499136outputs (0major+2444minor)pagefaults 0swaps