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] [15.0% done] [ 18509/  4120 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [19.0% done] [ 17311/  3786 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [22.7% done] [ 12523/  6837 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [27.3% done] [ 10465/  8859 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [30.4% done] [  5983/ 11974 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [33.3% done] [ 14830/  2147 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [  8842/  8065 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [  4401/ 10063 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [42.3% done] [  9985/  5552 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [ 14708/   691 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [ 12145/  2245 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  8196/  3900 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [ 10067/  2330 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  8932/  1797 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  6784/  2932 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmV] [62.1% done] [  5018/  2637 kb/s] [eta 00m:11s]
fio: pid=24751, got signal=6
Threads: 2: [mm_] [63.3% done] [  6337/  2159 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=24750, got signal=6
Threads: 1: [m__] [66.7% done] [  5377/  1696 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=24749, got signal=6

fio: (groupid=0): err= 0: pid=24749
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=7.3%, 8=92.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=2.6%, 50=11.9%, 100=44.0%
     lat (msec): 250=39.7%, 500=0.9%, 750=0.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=24750
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.5%, 8=94.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.4%, 50=11.9%, 100=37.4%
     lat (msec): 250=47.8%, 500=0.6%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=24751
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=4.7%, 8=94.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.7%, 50=8.5%, 100=49.0%
     lat (msec): 250=40.1%, 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=3981/1860, merge=773/226, ticks=47128/28012, in_queue=75132, util=99.27%
0.26user 0.29system 0:20.94elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
437752inputs+176960outputs (0major+2454minor)pagefaults 0swaps