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] [13.6% done] [ 21228/  2761 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [18.2% done] [ 13945/  7919 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [21.7% done] [  8696/ 10042 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [ 15262/  2629 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [  9931/  9033 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [ 10034/  7065 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [  5356/ 10461 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [ 12613/  5245 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [ 14161/  2641 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [  8651/  4908 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  7024/  6219 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [  8533/  4335 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [  5469/  5619 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  9012/  2039 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  6590/  2369 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [62.1% done] [  7745/  1649 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=29361, got signal=6
Threads: 2: [m_m] [63.3% done] [  7399/   881 kb/s] [eta 00m:11s]
Threads: 2: [m_m] [64.5% done] [  6696/  1414 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=29360, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=29362, got signal=6

fio: (groupid=0): err= 0: pid=29360
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=5.3%, 8=94.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.9%, 50=9.1%, 100=46.7%
     lat (msec): 250=40.9%, 500=0.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=29361
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=8.5%, 8=91.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.8%, 50=10.8%, 100=47.5%
     lat (msec): 250=39.3%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=29362
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.9%, 8=93.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.2%, 50=12.0%, 100=37.9%
     lat (msec): 250=47.1%, 500=1.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3999/1938, merge=548/151, ticks=47900/29320, in_queue=77220, util=98.36%
0.37user 0.46system 0:21.40elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
419968inputs+193960outputs (0major+2443minor)pagefaults 0swaps