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] [ 18263/  4482 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [17.4% done] [ 14870/  7028 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [22.7% done] [ 12434/  7679 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [27.3% done] [ 15822/  5556 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [30.4% done] [  8061/ 10331 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [ 14557/  2749 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [39.1% done] [ 10036/  7017 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [41.7% done] [ 14984/  1281 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [ 12593/  3917 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [  7040/  7211 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [  8224/  4571 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  7264/  4047 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.7% done] [  9058/  3034 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [59.3% done] [  8289/  3083 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  6573/  3302 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [64.3% done] [  8741/   313 kb/s] [eta 00m:10s]
Threads: 3: [mmm] [63.3% done] [  4246/  1521 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=10657, got signal=6
Threads: 2: [m_m] [64.5% done] [  5003/  1431 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=10658, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=10656, got signal=6

fio: (groupid=0): err= 0: pid=10656
  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=0.1%, 10=0.2%, 20=1.3%, 50=7.2%, 100=40.3%
     lat (msec): 250=48.8%, 500=1.6%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=10657
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.5%, 4=5.8%, 8=93.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.0%, 10=0.4%, 20=1.0%, 50=6.5%, 100=50.2%
     lat (msec): 250=41.2%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=10658
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=5.3%, 8=94.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.5%, 10=0.0%, 20=0.7%, 50=7.5%, 100=50.6%
     lat (msec): 250=39.8%, 500=0.5%, 750=0.1%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3837/1816, merge=821/213, ticks=45608/33860, in_queue=79460, util=99.05%
0.19user 0.36system 0:21.23elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
408816inputs+205560outputs (0major+2460minor)pagefaults 0swaps