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] [12.0% done] [ 15510/  6867 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [16.0% done] [ 12336/  8484 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [20.0% done] [ 18627/  3177 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [23.1% done] [  7505/ 10114 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [26.9% done] [ 14925/  5014 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [30.8% done] [  5680/ 11398 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [34.6% done] [ 13219/  3994 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [37.0% done] [ 11430/  4831 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [40.7% done] [  9244/  4815 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [44.4% done] [ 13856/  2064 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.4% done] [  8159/  5839 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [50.0% done] [ 11003/  1271 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [53.6% done] [  4616/  6599 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.2% done] [  7058/  4018 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [56.7% done] [  7724/  2287 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=23705, got signal=6
Threads: 2: [mm_] [58.1% done] [  8110/  1080 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=23704, got signal=6
Threads: 1: [m__] [59.4% done] [  3624/  3291 kb/s] [eta 00m:13s]
Threads: 1: [m__] [64.5% done] [  4482/  3246 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=23703, got signal=6

fio: (groupid=0): err= 0: pid=23703
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.7%, 8=94.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.2%, 50=24.3%, 100=19.5%
     lat (msec): 250=53.1%, 500=1.1%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=23704
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.5%, 8=93.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.9%, 50=11.2%, 100=57.3%
     lat (msec): 250=29.5%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=23705
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.5%, 8=93.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.5%, 50=9.8%, 100=59.0%
     lat (msec): 250=29.2%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3499/2271, merge=509/166, ticks=40652/31756, in_queue=72404, util=96.96%
0.19user 0.69system 0:21.51elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
395224inputs+218856outputs (0major+2455minor)pagefaults 0swaps