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] [ 19244/  2243 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [18.2% done] [ 17234/  3774 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [22.7% done] [ 11820/  7476 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [27.3% done] [ 17066/  2429 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [30.4% done] [ 12259/  5847 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [  7866/ 10341 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [39.1% done] [ 13068/  3986 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [41.7% done] [  8894/  5656 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [ 11028/  4477 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [ 10743/  3319 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  9374/  4197 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  7111/  5355 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  4494/  7078 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  4120/  4136 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  2771/  6725 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [62.1% done] [  9175/  1316 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  1966/  5355 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=11170, got signal=6
Threads: 2: [m_m] [62.5% done] [  2807/  3006 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=11171, got signal=6
Threads: 1: [m__] [65.6% done] [  7107/     0 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=11169, got signal=6

fio: (groupid=0): err= 0: pid=11169
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=7.0%, 8=92.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.1%, 50=13.4%, 100=40.2%
     lat (msec): 250=43.3%, 500=1.1%, 750=0.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=11170
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.7%, 8=95.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.1%, 50=11.1%, 100=47.1%
     lat (msec): 250=41.2%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=11171
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.4%, 4=6.2%, 8=93.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.0%, 10=0.1%, 20=2.1%, 50=9.8%, 100=42.4%
     lat (msec): 250=44.2%, 500=0.4%, 750=0.4%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3734/2440, merge=784/186, ticks=45172/34240, in_queue=79408, util=98.74%
0.55user 0.42system 0:22.19elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
394728inputs+219544outputs (0major+2463minor)pagefaults 0swaps