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] [14.3% done] [ 12560/  9888 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [19.0% done] [ 13731/  6349 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [22.7% done] [ 15053/  5234 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [27.3% done] [ 13825/  5979 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [30.4% done] [ 15139/  3408 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [ 13666/  5116 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [ 12788/  3949 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [ 13116/  2889 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [  9493/  6650 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [  8464/  5172 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [  6019/  7053 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  7960/  3363 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [ 11012/   853 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  9001/  1525 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  6001/  3896 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  3136/  4893 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  4746/  3514 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14209, got signal=6
Threads: 2: [m_m] [64.5% done] [   919/  5413 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14208, got signal=6
Threads: 1: [__m] [67.7% done] [  2501/  3583 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14210, got signal=6

fio: (groupid=0): err= 0: pid=14208
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=4.3%, 8=95.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.7%, 50=7.0%, 100=46.5%
     lat (msec): 250=43.8%, 500=1.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=14209
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.4%, 8=95.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.4%, 50=9.3%, 100=45.0%
     lat (msec): 250=44.8%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=14210
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=5.2%, 8=94.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.1%, 20=1.0%, 50=12.4%, 100=42.7%
     lat (msec): 250=41.9%, 500=1.3%, 750=0.1%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3436/2401, merge=540/146, ticks=42608/33432, in_queue=76036, util=98.91%
0.22user 0.32system 0:21.56elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
386896inputs+227312outputs (0major+2464minor)pagefaults 0swaps