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] [12.5% done] [ 11800/ 10552 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [17.4% done] [ 14651/  7333 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [20.8% done] [ 15156/  4356 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [26.1% done] [ 20093/     0 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [29.2% done] [ 14531/  4518 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [ 14681/  2681 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [36.0% done] [  6863/  9256 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.0% done] [ 10103/  8065 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [  8894/  6928 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [ 11893/  3287 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  5729/  6871 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [  7838/  4985 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [  8277/  3067 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  9719/  1495 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  6846/  2759 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  4702/  3884 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [63.3% done] [  2417/  5749 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=27201, got signal=6
Threads: 2: [mm_] [62.5% done] [  5079/  2064 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=27200, got signal=6
Threads: 1: [m__] [65.6% done] [  3726/  2889 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=27199, got signal=6

fio: (groupid=0): err= 0: pid=27199
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=6.3%, 8=93.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.3%, 10=0.2%, 20=2.4%, 50=13.1%, 100=37.6%
     lat (msec): 250=43.6%, 500=2.1%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=27200
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.7%, 8=94.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.5%, 50=9.4%, 100=42.2%
     lat (msec): 250=45.4%, 500=1.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=27201
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.2%, 8=95.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.2%, 50=8.9%, 100=46.4%
     lat (msec): 250=42.5%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3887/2110, merge=644/136, ticks=49532/28968, in_queue=78492, util=98.81%
0.40user 0.40system 0:21.84elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
419792inputs+194848outputs (0major+2455minor)pagefaults 0swaps