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] [12.0% done] [ 16026/  3287 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [16.0% done] [ 15420/  4303 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [20.8% done] [ 17692/  2763 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [24.0% done] [  7464/ 11418 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [28.0% done] [ 12231/  6050 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [32.0% done] [ 13645/  4234 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [36.0% done] [  7745/  9216 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [38.5% done] [  8903/  5944 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [42.3% done] [ 12357/  4941 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [ 10337/  4047 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.1% done] [ 14136/     0 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.9% done] [  7826/  5164 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.6% done] [  9341/  2304 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [57.1% done] [  8578/  2470 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  5587/  4477 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  6729/  3384 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=30161, got signal=6
Threads: 2: [_mm] [59.4% done] [  8228/     0 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=30162, got signal=6
Threads: 1: [__m] [64.5% done] [  1280/  5351 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=30163, got signal=6

fio: (groupid=0): err= 0: pid=30161
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.7%, 8=93.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=3.8%, 50=6.1%, 100=57.7%
     lat (msec): 250=31.7%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=30162
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=6.1%, 8=93.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=0.4%, 20=1.5%, 50=10.0%, 100=50.5%
     lat (msec): 250=36.7%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=30163
  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=0.1%, 4=0.1%, 10=0.1%, 20=1.9%, 50=20.5%, 100=21.3%
     lat (msec): 250=54.0%, 500=1.2%, 750=0.3%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=4176/1845, merge=775/121, ticks=49988/30580, in_queue=80564, util=98.93%
0.21user 0.53system 0:21.16elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
447520inputs+166792outputs (0major+2448minor)pagefaults 0swaps