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] [10.7% done] [  8045/ 10136 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [13.8% done] [ 12633/  2998 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [17.2% done] [ 12658/  2562 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [20.0% done] [ 11031/  3294 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [23.3% done] [  8224/  7504 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [26.7% done] [ 11840/  3018 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [29.0% done] [ 14378/     0 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [32.3% done] [ 13508/     0 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [36.7% done] [ 11702/  1976 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [38.7% done] [ 13511/     0 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [41.9% done] [ 12117/     0 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [43.8% done] [  5481/  7054 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [46.9% done] [  1647/  9997 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [50.0% done] [  6229/  5050 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [53.1% done] [ 14573/   622 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [56.2% done] [ 10986/  1614 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [57.6% done] [  7341/  3453 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [60.6% done] [  7529/  2807 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [61.8% done] [  8692/  1793 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [64.7% done] [  9330/     0 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1220, got signal=6
Threads: 2: [_mm] [65.7% done] [  7077/  1114 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1222, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1221, got signal=6

fio: (groupid=0): err= 0: pid=1220
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=8.3%, 8=91.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=0.1%, 20=1.6%, 50=24.4%, 100=40.7%
     lat (msec): 250=12.9%, 500=19.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=1221
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=8.7%, 8=91.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.6%, 50=26.5%, 100=36.6%
     lat (msec): 250=14.6%, 500=19.6%, 750=0.5%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=1222
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=8.3%, 8=91.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=2.0%, 50=26.4%, 100=38.6%
     lat (msec): 250=12.8%, 500=18.9%, 750=0.9%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=4207/1441, merge=798/276, ticks=61116/25976, in_queue=87092, util=99.20%
0.68user 0.31system 0:24.25elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
460880inputs+153336outputs (0major+2462minor)pagefaults 0swaps