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] [13.0% done] [ 12214/  7415 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [17.4% done] [ 12084/  7699 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [20.8% done] [ 14769/  5954 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [24.0% done] [ 10681/  6398 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [28.0% done] [ 14167/  4213 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [32.0% done] [ 14624/  2978 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [36.0% done] [  9082/  8232 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.0% done] [  8554/  8277 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [  5999/  8822 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [  8948/  5743 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  6316/  7065 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [ 11010/  2334 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [  9310/  1472 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  5901/  4026 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  5283/  4250 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [62.1% done] [  5989/  3307 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [63.3% done] [  8549/   756 kb/s] [eta 00m:11s]
fio: pid=18980, got signal=6
Threads: 2: [mm_] [64.5% done] [  7882/   821 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 2: [mm_] [67.7% done] [  4022/  1627 kb/s] [eta 00m:10s]
fio: pid=18978, got signal=6
fio: pid=18979, got signal=6

fio: (groupid=0): err= 0: pid=18978
  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=0.0%, 20=2.4%, 50=9.6%, 100=44.8%
     lat (msec): 250=41.5%, 500=0.7%, 750=0.5%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=18979
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.3%, 8=94.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.1%, 50=11.6%, 100=41.7%
     lat (msec): 250=44.3%, 500=0.5%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=18980
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=6.0%, 8=93.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.2%, 10=0.0%, 20=1.6%, 50=8.9%, 100=49.6%
     lat (msec): 250=39.0%, 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=3994/2106, merge=655/229, ticks=48212/32152, in_queue=80364, util=97.75%
0.17user 0.35system 0:21.78elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
418944inputs+195352outputs (0major+2454minor)pagefaults 0swaps