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] [ 15441/  6619 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [18.2% done] [ 18757/  4165 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [22.7% done] [ 20886/   971 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [26.1% done] [ 11796/  7952 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [29.2% done] [ 16981/  2998 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [  9065/  8317 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 16469/  2015 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [ 15217/  2685 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [  5767/  7797 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [ 10817/  4352 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  8964/  3592 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  9183/  2706 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  7220/  3714 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  9289/   930 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  6708/  3092 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  6517/  1962 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5395, got signal=6
Threads: 2: [mm_] [63.3% done] [  7111/   138 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5394, got signal=6
Threads: 1: [m__] [66.7% done] [   568/  5920 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5393, got signal=6

fio: (groupid=0): err= 0: pid=5393
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.0%, 8=93.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.1%, 50=17.8%, 100=36.7%
     lat (msec): 250=43.5%, 500=1.0%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5394
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=6.0%, 8=93.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.0%, 10=0.1%, 20=2.0%, 50=9.8%, 100=55.4%
     lat (msec): 250=31.4%, 500=0.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5395
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=7.3%, 8=92.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=2.0%, 50=10.9%, 100=52.9%
     lat (msec): 250=33.6%, 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=3879/1699, merge=604/87, ticks=45424/25448, in_queue=70872, util=98.17%
0.24user 0.40system 0:20.94elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
457960inputs+156256outputs (0major+2445minor)pagefaults 0swaps