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] [  9668/ 11523 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [17.4% done] [ 12613/  7459 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [ 14169/  5339 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [ 16017/  4405 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [29.2% done] [  7810/  8200 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [32.0% done] [  3042/ 11970 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [36.0% done] [ 10646/  7834 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [38.5% done] [ 10865/  5684 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [42.3% done] [ 13585/  2098 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [  5664/  7810 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.1% done] [  8354/  3900 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  7699/  2879 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [53.6% done] [  7097/  4417 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.2% done] [ 11885/   410 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [58.6% done] [  6156/  3604 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  4710/  2318 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [61.3% done] [  4954/  2387 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [62.5% done] [  6756/   846 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=28504, got signal=6
Threads: 2: [mm_] [61.8% done] [  4193/  2883 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=28503, got signal=6
Threads: 1: [m__] [66.7% done] [  3494/  2957 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=28502, got signal=6

fio: (groupid=0): err= 0: pid=28502
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=6.6%, 8=93.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.7%, 50=15.4%, 100=30.0%
     lat (msec): 250=50.8%, 500=1.2%, 750=0.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=28503
  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=0.2%, 20=0.7%, 50=7.7%, 100=41.6%
     lat (msec): 250=48.4%, 500=0.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=28504
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.2%, 8=93.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.0%, 50=8.5%, 100=41.9%
     lat (msec): 250=47.9%, 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=3993/2238, merge=601/370, ticks=50816/33484, in_queue=84296, util=98.18%
0.23user 0.57system 0:22.86elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
408784inputs+204928outputs (0major+2458minor)pagefaults 0swaps