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] [12.0% done] [ 16371/  6552 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [16.0% done] [ 17474/  4506 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [20.8% done] [ 15655/  4673 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [24.0% done] [ 16526/  2373 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [26.9% done] [ 13077/  4417 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [30.8% done] [  6471/  9371 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [34.6% done] [ 11433/  5865 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [38.5% done] [  6341/  9245 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [42.3% done] [ 10313/  4929 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [  5568/  8846 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.1% done] [  2726/ 10077 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.9% done] [  6329/  6817 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.6% done] [  7797/  4071 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.2% done] [  5571/  5006 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [58.6% done] [  8574/  1627 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  6687/  2802 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [61.3% done] [  1757/  6052 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12905, got signal=6
Threads: 2: [m_m] [64.5% done] [  8997/    65 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12906, got signal=6
Threads: 1: [m__] [67.7% done] [  5092/  1289 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12904, got signal=6

fio: (groupid=0): err= 0: pid=12904
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.3%, 8=93.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=3.1%, 50=9.9%, 100=32.5%
     lat (msec): 250=52.5%, 500=1.1%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12905
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.2%, 8=95.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.2%, 50=9.4%, 100=48.8%
     lat (msec): 250=41.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12906
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.2%, 8=94.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.4%, 50=13.5%, 100=36.3%
     lat (msec): 250=48.5%, 500=0.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3609/2391, merge=598/94, ticks=43540/35184, in_queue=78712, util=98.36%
0.22user 0.56system 0:21.76elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
385528inputs+228520outputs (0major+2456minor)pagefaults 0swaps