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] [ 21928/   964 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [19.0% done] [  7505/ 12783 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [22.7% done] [ 14716/  6532 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [27.3% done] [ 19167/   601 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [30.4% done] [ 13113/  5287 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [ 13577/  4453 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [  6469/  8378 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [  9212/  6914 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [  6776/  7675 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [  9330/  5291 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [  5718/  7345 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  7915/  4128 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.7% done] [  7500/  3685 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [59.3% done] [  5885/  4901 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  9732/     0 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  7093/  2509 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  3758/  3355 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5952, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5953, got signal=6
Threads: 1: [m__] [64.5% done] [  5995/  1313 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5951, got signal=6

fio: (groupid=0): err= 0: pid=5951
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=6.3%, 8=93.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.2%, 20=3.1%, 50=10.4%, 100=42.5%
     lat (msec): 250=42.6%, 500=0.6%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5952
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=6.0%, 8=93.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.0%, 10=0.3%, 20=2.3%, 50=8.9%, 100=46.9%
     lat (msec): 250=40.8%, 500=0.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5953
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.8%, 8=93.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.8%, 50=8.7%, 100=41.7%
     lat (msec): 250=46.6%, 500=0.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3899/1938, merge=807/58, ticks=44876/30192, in_queue=75056, util=99.17%
0.26user 0.33system 0:21.12elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
416864inputs+197496outputs (0major+2455minor)pagefaults 0swaps