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] [13.0% done] [ 14628/  6290 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [17.4% done] [ 16819/  2965 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [ 14826/  5474 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [ 13027/  6818 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 12466/  6887 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [33.3% done] [  9977/  7024 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 13898/  3412 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [  9859/  7028 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [  9931/  4571 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [ 11726/  3481 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  4798/  6859 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  5784/  6414 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  8964/  3152 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  7012/  3310 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  5861/  4344 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  6325/  2481 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  5186/  3241 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=4473, got signal=6
Threads: 2: [mm_] [64.5% done] [  4409/  2277 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=4471, got signal=6
Threads: 1: [_m_] [67.7% done] [  4710/  2253 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=4472, got signal=6

fio: (groupid=0): err= 0: pid=4471
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.5%, 8=95.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.6%, 50=9.2%, 100=42.9%
     lat (msec): 250=46.1%, 500=0.2%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=4472
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.7%, 8=94.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=3.1%, 50=9.2%, 100=33.7%
     lat (msec): 250=52.1%, 500=0.7%, 750=0.5%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=4473
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=8.0%, 8=91.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.6%, 50=9.6%, 100=50.1%
     lat (msec): 250=38.2%, 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=3906/2113, merge=618/99, ticks=46872/32932, in_queue=79800, util=99.06%
0.33user 0.35system 0:21.68elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
409144inputs+204888outputs (0major+2456minor)pagefaults 0swaps