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] [ 12584/ 11284 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [19.0% done] [ 12637/  8529 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [22.7% done] [  9801/  9496 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [27.3% done] [ 18301/  1109 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [30.4% done] [ 15481/  3035 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [ 14010/  5144 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [39.1% done] [  9061/  8704 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [41.7% done] [ 13084/  2283 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [ 10565/  4904 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [  8204/  5619 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [  6115/  7163 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  8261/  3632 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  4908/  6314 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  8752/  2730 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  7354/  1503 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  9016/   406 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5393, got signal=6
Threads: 2: [mm_] [63.3% done] [  7119/   666 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5392, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 1: [m__] [66.7% done] [  6245/  1385 kb/s] [eta 00m:10s]
fio: pid=5391, got signal=6

fio: (groupid=0): err= 0: pid=5391
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=6.4%, 8=93.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.2%, 10=0.0%, 20=2.2%, 50=13.2%, 100=42.4%
     lat (msec): 250=40.4%, 500=0.9%, 750=0.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5392
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=7.2%, 8=92.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.9%, 50=10.1%, 100=47.3%
     lat (msec): 250=39.7%, 500=0.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5393
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 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=2.3%, 50=6.6%, 100=51.1%
     lat (msec): 250=39.4%, 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=3857/1683, merge=588/75, ticks=43340/24372, in_queue=67712, util=98.78%
0.60user 0.29system 0:20.48elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
428960inputs+185232outputs (0major+2444minor)pagefaults 0swaps