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] [ 18952/  2519 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [18.2% done] [ 19590/  2405 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [22.7% done] [ 17249/  3482 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [26.1% done] [ 11812/  8541 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [  7789/  8984 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [ 13507/  4165 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [ 10621/  5908 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [ 14340/  2454 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [42.3% done] [  3287/  8976 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [ 13295/  1787 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.1% done] [  5993/  6851 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.9% done] [  7005/  6148 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.6% done] [  6375/  4644 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.2% done] [  9662/  2206 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [58.6% done] [  6643/  2811 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.1% done] [  3921/  3181 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14820, got signal=6
Threads: 2: [_mm] [61.3% done] [  6887/  1974 kb/s] [eta 00m:12s]
Threads: 2: [_mm] [62.5% done] [  2860/  4441 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14822, got signal=6
Threads: 1: [_m_] [65.6% done] [  1621/  4591 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14821, got signal=6

fio: (groupid=0): err= 0: pid=14820
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.7%, 8=95.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.0%, 50=10.5%, 100=57.9%
     lat (msec): 250=31.1%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=14821
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.6%, 8=95.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.6%, 50=19.3%, 100=31.7%
     lat (msec): 250=46.8%, 500=0.7%, 750=0.5%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=14822
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.6%, 8=95.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.2%, 50=13.7%, 100=37.9%
     lat (msec): 250=46.1%, 500=0.3%, 750=0.3%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3842/2259, merge=778/84, ticks=48424/30352, in_queue=78768, util=98.77%
0.16user 0.41system 0:21.91elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
422056inputs+192240outputs (0major+2454minor)pagefaults 0swaps