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] [12.5% done] [ 11893/  9221 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [16.7% done] [ 13068/  8573 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [20.8% done] [ 11645/  8537 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [25.0% done] [ 12690/  6144 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [29.2% done] [ 16270/  2652 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [ 15871/  2672 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 15481/  2135 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [  9236/  5957 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [42.3% done] [ 10941/  3367 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [ 11511/  1601 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  4108/  8497 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [  8850/  4096 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [  8179/  3868 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  9863/  1439 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  7834/  1688 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [62.1% done] [  8342/   687 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  4331/  3372 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2970, got signal=6
Threads: 2: [mm_] [62.5% done] [  1346/  4413 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2968, got signal=6
Threads: 1: [_m_] [67.7% done] [  1519/  5107 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2969, got signal=6

fio: (groupid=0): err= 0: pid=2968
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.1%, 8=95.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.4%, 50=8.7%, 100=52.3%
     lat (msec): 250=37.5%, 500=0.4%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2969
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=5.9%, 8=93.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.2%, 20=2.3%, 50=13.9%, 100=33.2%
     lat (msec): 250=48.3%, 500=1.4%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2970
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=5.2%, 8=94.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.5%, 50=8.3%, 100=53.5%
     lat (msec): 250=37.2%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3927/2150, merge=504/97, ticks=47904/33776, in_queue=81676, util=98.85%
0.22user 0.69system 0:22.02elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
412568inputs+201704outputs (0major+2457minor)pagefaults 0swaps