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] [ 17586/  3994 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [17.4% done] [ 10487/  8529 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [ 12665/  6859 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [  6867/ 11841 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [29.2% done] [ 11036/  6444 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [ 14453/  2616 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [36.0% done] [ 14594/  2798 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.0% done] [ 11743/  4453 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [  7094/  7383 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [  4189/  8955 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [ 11780/  2620 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [  4571/  8061 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [  9699/  2291 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  3596/  6436 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  4815/  4660 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [62.1% done] [  7927/  1475 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  6680/  2332 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [64.5% done] [  5688/  2454 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=8871, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=8870, got signal=6
Threads: 1: [__m] [65.6% done] [  3271/  3283 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=8872, got signal=6

fio: (groupid=0): err= 0: pid=8870
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=4.4%, 8=95.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.5%, 50=9.9%, 100=46.9%
     lat (msec): 250=41.7%, 500=0.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=8871
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.9%, 8=94.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.7%, 50=8.2%, 100=49.1%
     lat (msec): 250=41.1%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=8872
  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=0.2%, 20=2.9%, 50=8.8%, 100=37.8%
     lat (msec): 250=48.2%, 500=1.7%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3826/2358, merge=693/159, ticks=45008/39620, in_queue=84628, util=98.91%
0.29user 0.59system 0:22.43elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
394392inputs+219888outputs (0major+2456minor)pagefaults 0swaps