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] [ 14120/  7403 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [17.4% done] [ 17895/  3011 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [22.7% done] [ 15729/  4266 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [27.3% done] [ 16514/  4705 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [30.4% done] [ 19707/     0 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [ 13616/  4583 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [ 12816/  3409 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [ 12625/  3600 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [ 11357/  5237 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [ 10853/  3579 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  4713/  8370 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  9276/  3490 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  7163/  3153 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  5018/  5172 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  6213/  3344 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.0% done] [  2413/  5323 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=18546, got signal=6
Threads: 2: [m_m] [63.3% done] [  3502/  3380 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=18547, got signal=6
Threads: 1: [m__] [64.5% done] [  5237/  1588 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=18545, got signal=6

fio: (groupid=0): err= 0: pid=18545
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=5.8%, 8=93.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.1%, 20=1.4%, 50=15.8%, 100=40.8%
     lat (msec): 250=40.3%, 500=0.7%, 750=0.3%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=18546
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=3.9%, 8=95.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.1%, 50=8.6%, 100=48.9%
     lat (msec): 250=41.9%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=18547
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.2%, 8=93.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.6%, 50=8.4%, 100=48.7%
     lat (msec): 250=40.0%, 500=0.2%, 750=0.3%, 1000=0.1%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3841/2093, merge=714/54, ticks=47600/26456, in_queue=74048, util=98.78%
0.36user 0.29system 0:21.25elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
428640inputs+185648outputs (0major+2454minor)pagefaults 0swaps