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] [15.0% done] [ 11181/ 11775 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [19.0% done] [ 11454/  9867 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [23.8% done] [ 12959/  7427 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [28.6% done] [ 18598/  3006 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [33.3% done] [ 15489/  2973 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [34.8% done] [  3205/ 13134 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [39.1% done] [ 14262/  4014 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [41.7% done] [  6939/  8395 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [ 11999/  2933 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  4978/  7431 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [52.0% done] [  6621/  5198 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  9606/  2901 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.7% done] [  6223/  4624 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [59.3% done] [  6042/  2954 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  5649/  2578 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  8183/  1549 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  8135/  1395 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=18162, got signal=6
Threads: 2: [_mm] [64.5% done] [  3786/  2208 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=18163, got signal=6
Threads: 1: [__m] [67.7% done] [   316/  4335 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=18164, got signal=6

fio: (groupid=0): err= 0: pid=18162
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=6.2%, 8=93.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.6%, 20=2.1%, 50=7.4%, 100=43.4%
     lat (msec): 250=46.2%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=18163
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.0%, 8=95.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.0%, 50=9.8%, 100=42.2%
     lat (msec): 250=46.9%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=18164
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.0%, 8=95.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.1%, 50=11.5%, 100=44.2%
     lat (msec): 250=42.3%, 500=1.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3307/2435, merge=622/360, ticks=39336/38152, in_queue=77488, util=98.96%
0.29user 0.53system 0:22.03elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
365840inputs+248384outputs (0major+2466minor)pagefaults 0swaps