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] [15.0% done] [ 19398/  1761 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [19.0% done] [ 17978/  3469 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [22.7% done] [  4876/ 12633 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [26.1% done] [ 12007/  7651 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 10880/  7935 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [ 14891/  3949 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [ 13544/  2631 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [ 11563/  5523 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [ 12776/  3571 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [  5735/  7895 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  8399/  4478 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  5875/  4746 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  4913/  6898 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  6777/  3063 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  4641/  5133 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  8659/   959 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21215, got signal=6
Threads: 2: [m_m] [63.3% done] [  7028/  1330 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21216, got signal=6
Threads: 1: [m__] [64.5% done] [  2407/  3965 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21214, got signal=6

fio: (groupid=0): err= 0: pid=21214
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.4%, 4=5.9%, 8=93.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.5%, 10=0.4%, 20=2.1%, 50=13.4%, 100=35.7%
     lat (msec): 250=46.0%, 500=1.1%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=21215
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.8%, 8=94.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=3.3%, 50=7.2%, 100=49.1%
     lat (msec): 250=39.8%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=21216
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.7%, 8=95.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.6%, 50=7.8%, 100=39.8%
     lat (msec): 250=49.3%, 500=0.7%, 750=0.1%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3672/2357, merge=558/186, ticks=44908/40020, in_queue=84928, util=97.66%
0.17user 0.76system 0:21.48elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
398568inputs+215624outputs (0major+2455minor)pagefaults 0swaps