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] [14.3% done] [ 17994/  3217 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [18.2% done] [  4917/ 15444 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [23.8% done] [ 14846/  7463 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [27.3% done] [  9709/  9542 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [31.8% done] [  9432/  9343 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [34.8% done] [ 13787/  3588 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [39.1% done] [  8301/  7374 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [41.7% done] [  9530/  4811 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [  7638/  7280 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [ 12113/  2700 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [ 10425/  3559 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [ 10967/  3547 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.7% done] [  5495/  5580 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [59.3% done] [  6475/  3742 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  4624/  4641 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  6585/  2485 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21019, got signal=6
Threads: 2: [m_m] [63.3% done] [  3034/  4152 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21018, got signal=6
Threads: 1: [__m] [64.5% done] [   565/  5499 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21020, got signal=6

fio: (groupid=0): err= 0: pid=21018
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.9%, 8=94.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.4%, 50=9.9%, 100=44.6%
     lat (msec): 250=43.6%, 500=0.7%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=21019
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=5.9%, 8=93.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.3%, 50=11.9%, 100=49.0%
     lat (msec): 250=38.2%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=21020
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.8%, 8=94.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.5%, 50=9.4%, 100=44.0%
     lat (msec): 250=43.4%, 500=0.7%, 750=0.4%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3287/2424, merge=363/231, ticks=39504/34348, in_queue=73848, util=98.19%
0.15user 0.52system 0:21.34elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
369080inputs+245088outputs (0major+2458minor)pagefaults 0swaps