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: 0
Threads: 3
Threads: 3
Threads: 3: [mmm] [10.7% done] [  6483/ 14403 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [14.8% done] [ 10469/  9147 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [18.5% done] [ 11409/  7947 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [23.1% done] [  8899/  8871 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [26.9% done] [  9977/  8781 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [30.8% done] [  3168/ 13483 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [34.6% done] [  9237/  8212 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [38.5% done] [  8972/  8789 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [42.3% done] [ 11568/  5446 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [ 12011/  3254 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.1% done] [ 11779/  2070 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.9% done] [  8456/  4681 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.6% done] [  7549/  4376 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [57.1% done] [  9534/  3595 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  5718/  4754 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  7886/  1464 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [61.3% done] [  6626/  2285 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [62.5% done] [  4307/   833 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=31280, got signal=6
Threads: 2: [_mm] [63.6% done] [  3652/   199 kb/s] [eta 00m:12s]
Threads: 2: [_mm] [64.7% done] [  2717/  1561 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=31281, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=31282, got signal=6

fio: (groupid=0): err= 0: pid=31280
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.3%, 8=95.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.0%, 50=2.3%, 100=50.5%
     lat (msec): 250=46.6%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=31281
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.3%, 8=94.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.0%, 50=5.1%, 100=39.3%
     lat (msec): 250=53.9%, 500=0.9%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=31282
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.9%, 8=94.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.5%, 20=1.7%, 50=6.8%, 100=36.1%
     lat (msec): 250=51.4%, 500=2.4%, 750=0.4%, 1000=0.1%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3519/3088, merge=620/14524, ticks=46264/296428, in_queue=342664, util=99.96%
0.57user 0.93system 0:24.61elapsed 6%CPU (0avgtext+0avgdata 0maxresident)k
353720inputs+260384outputs (0major+2464minor)pagefaults 0swaps