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] [11.1% done] [ 16184/     0 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [13.8% done] [ 13801/     0 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [17.2% done] [  9538/  7244 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [20.0% done] [  8179/  8269 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [23.3% done] [  5385/ 11096 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [27.6% done] [  7191/ 12007 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [32.1% done] [ 16615/  1483 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [35.7% done] [ 10516/  6160 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [39.3% done] [ 16241/   593 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [42.9% done] [ 10010/  5186 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [46.4% done] [  2456/ 11096 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [48.3% done] [  4173/  8151 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [51.7% done] [  7842/  5747 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [55.2% done] [  5755/  5332 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [56.7% done] [  6983/  4250 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [58.1% done] [  3461/  7317 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [61.3% done] [  7240/  2127 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [62.5% done] [  5733/  3035 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [63.6% done] [  7537/  1484 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3714, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3715, got signal=6
Threads: 1: [m__] [64.7% done] [  7952/    77 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3713, got signal=6

fio: (groupid=0): err= 0: pid=3713
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=7.3%, 8=92.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.3%, 20=2.4%, 50=10.8%, 100=38.8%
     lat (msec): 250=37.6%, 500=9.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3714
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=7.0%, 8=92.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.1%, 20=2.8%, 50=9.2%, 100=49.0%
     lat (msec): 250=29.9%, 500=8.2%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3715
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.1%, 8=93.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=3.0%, 50=10.9%, 100=41.3%
     lat (msec): 250=35.4%, 500=8.0%, 750=0.6%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3728/2320, merge=632/283, ticks=52644/37376, in_queue=90020, util=99.15%
0.46user 0.34system 0:22.98elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
392192inputs+222016outputs (0major+2461minor)pagefaults 0swaps