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] [12.5% done] [ 10099/ 11262 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [16.0% done] [  9839/ 10018 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [20.0% done] [ 11771/  5847 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [24.0% done] [ 12511/  6345 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [28.0% done] [ 12698/  4718 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [30.8% done] [  9985/  8082 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [34.6% done] [ 13178/  4014 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [37.0% done] [ 11942/  4047 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [40.7% done] [ 15253/   878 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [44.4% done] [ 12231/  2574 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.4% done] [  8171/  5605 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [50.0% done] [ 10107/  1683 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.7% done] [  3294/  7943 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [53.3% done] [  1521/  9334 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [56.7% done] [  3360/  6745 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [58.1% done] [  5544/  2265 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12240, got signal=6
Threads: 2: [m_m] [59.4% done] [  8676/   174 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12241, got signal=6
Threads: 1: [m__] [62.5% done] [  6729/   914 kb/s] [eta 00m:12s]
Threads: 1: [m__] [67.7% done] [  5759/  1891 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12239, got signal=6

fio: (groupid=0): err= 0: pid=12239
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=6.4%, 8=93.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.4%, 20=2.7%, 50=17.4%, 100=25.8%
     lat (msec): 250=52.2%, 500=1.1%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12240
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.2%, 8=94.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.2%, 50=9.7%, 100=55.9%
     lat (msec): 250=33.6%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12241
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.1%, 8=93.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.9%, 50=12.6%, 100=45.4%
     lat (msec): 250=39.0%, 500=0.3%, 750=0.2%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3773/2267, merge=591/83, ticks=44404/34908, in_queue=79316, util=99.11%
0.18user 0.37system 0:21.73elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
387792inputs+226200outputs (0major+2460minor)pagefaults 0swaps