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] [ 12206/  9992 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [18.2% done] [ 11231/ 10203 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [22.7% done] [ 12011/  7907 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [26.1% done] [ 16664/  2844 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 19017/   138 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [ 10061/  7927 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [  2381/ 14234 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [  2767/ 11020 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [  9175/  5087 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [ 12263/  1913 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  9203/  4839 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  9354/  3872 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  7253/  3169 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  7838/  3531 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  8643/  1393 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  6351/  3453 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  3888/  3900 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3717, got signal=6
Threads: 2: [m_m] [64.5% done] [  3490/  3799 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3718, got signal=6
Threads: 1: [m__] [67.7% done] [  4729/  1946 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3716, got signal=6

fio: (groupid=0): err= 0: pid=3716
  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=1.5%, 50=11.2%, 100=39.0%
     lat (msec): 250=46.2%, 500=1.4%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3717
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.0%, 8=93.7%, 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=49.1%
     lat (msec): 250=40.1%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3718
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.6%, 8=93.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=2.5%, 50=7.9%, 100=44.5%
     lat (msec): 250=43.6%, 500=0.9%, 750=0.1%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3773/2216, merge=681/71, ticks=47304/28772, in_queue=76068, util=98.32%
0.20user 0.62system 0:21.96elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
401384inputs+212464outputs (0major+2450minor)pagefaults 0swaps