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] [13.6% done] [ 14028/  8610 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [17.4% done] [ 13012/  8789 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [20.8% done] [ 11641/  9241 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [25.0% done] [  8468/ 11226 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [29.2% done] [  9784/  7757 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [32.0% done] [ 12576/  4331 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [36.0% done] [  9725/  7289 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.0% done] [  8049/  7760 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [42.3% done] [  9554/  4803 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [ 10262/  5763 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  8830/  4685 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [ 13365/     0 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  9753/  1871 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  6756/  3115 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  5877/  4677 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  3213/  4372 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15764, got signal=6
Threads: 2: [mm_] [63.3% done] [  7175/  1110 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15763, got signal=6
Threads: 1: [m__] [66.7% done] [  5934/   996 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15762, got signal=6

fio: (groupid=0): err= 0: pid=15762
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.5%, 8=93.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.0%, 50=16.7%, 100=36.9%
     lat (msec): 250=43.8%, 500=1.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15763
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=5.9%, 8=93.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.1%, 20=1.7%, 50=7.7%, 100=50.3%
     lat (msec): 250=39.3%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15764
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.2%, 8=94.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=2.6%, 50=5.4%, 100=49.2%
     lat (msec): 250=42.1%, 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=3395/2343, merge=430/217, ticks=39932/39200, in_queue=79128, util=99.16%
0.22user 0.51system 0:21.32elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
366744inputs+247488outputs (0major+2455minor)pagefaults 0swaps