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] [14.3% done] [ 15960/  5588 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [18.2% done] [  6129/ 14797 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [22.7% done] [ 15725/  4116 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [26.1% done] [  7667/ 11275 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [29.2% done] [  8846/  7338 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [ 11486/  3009 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [36.0% done] [ 13007/  4083 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.0% done] [ 13264/  2033 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [42.3% done] [ 14305/  2745 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [  8033/  6015 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  6687/  7012 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [  5295/  6479 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [  9981/  2652 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  7744/  2900 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  6068/  3766 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  6967/  2538 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  2990/  4282 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21620, got signal=6
Threads: 2: [mm_] [64.5% done] [  6174/  1578 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21618, got signal=6
Threads: 1: [_m_] [67.7% done] [  7236/     0 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21619, got signal=6

fio: (groupid=0): err= 0: pid=21618
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=5.6%, 8=94.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.4%, 10=0.1%, 20=1.9%, 50=10.4%, 100=36.4%
     lat (msec): 250=49.7%, 500=0.4%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=21619
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.6%, 8=93.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.3%, 20=2.8%, 50=10.8%, 100=44.6%
     lat (msec): 250=39.8%, 500=1.0%, 750=0.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=21620
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.8%, 8=95.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.6%, 50=10.2%, 100=49.5%
     lat (msec): 250=39.0%, 500=0.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3931/2227, merge=619/189, ticks=46636/35220, in_queue=81856, util=99.10%
0.19user 0.58system 0:21.87elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
401360inputs+212608outputs (0major+2456minor)pagefaults 0swaps