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] [ 22163/     0 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [18.2% done] [ 16855/  3644 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [22.7% done] [ 13097/  5108 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [26.1% done] [  9705/  8285 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [29.2% done] [  9505/  8692 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [ 13784/  3323 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 13060/  3184 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [ 11079/  4567 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [  8594/  7150 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [  6357/  7903 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  8399/  5312 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  8110/  4258 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [ 11795/     0 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  6434/  3538 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  6748/  3282 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  7415/  2001 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13492, got signal=6
Threads: 2: [mm_] [61.3% done] [  4925/  2416 kb/s] [eta 00m:12s]
Threads: 2: [mm_] [62.5% done] [  1472/  4364 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13491, got signal=6
Threads: 1: [m__] [67.7% done] [  6764/   394 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13490, got signal=6

fio: (groupid=0): err= 0: pid=13490
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.5%, 8=93.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.7%, 20=2.7%, 50=11.6%, 100=33.6%
     lat (msec): 250=49.6%, 500=0.6%, 750=0.6%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13491
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.3%, 8=95.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.1%, 50=10.4%, 100=46.8%
     lat (msec): 250=41.3%, 500=0.6%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13492
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=5.9%, 8=93.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.2%, 10=0.1%, 20=0.3%, 50=13.2%, 100=50.5%
     lat (msec): 250=35.6%, 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=3936/2110, merge=631/124, ticks=48012/29744, in_queue=77744, util=98.13%
0.22user 0.55system 0:21.82elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
419080inputs+195024outputs (0major+2454minor)pagefaults 0swaps