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] [13.0% done] [ 14179/  6357 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [16.7% done] [ 10604/  8554 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [21.7% done] [  9542/  9819 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [  8383/  9143 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [29.2% done] [ 14455/  3973 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [ 10491/  7700 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 11645/  6988 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [  9841/  4628 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [42.3% done] [  3766/ 10343 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [ 12194/  2462 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.1% done] [  8476/  4966 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.9% done] [  7207/  5645 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.6% done] [ 12105/   735 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [57.1% done] [  7736/  3384 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  5861/  3738 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [62.1% done] [  6097/  3847 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  4112/  3872 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=10921, got signal=6
Threads: 2: [_mm] [64.5% done] [  1962/  3978 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=10922, got signal=6
Threads: 1: [__m] [65.6% done] [  7512/     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=10923, got signal=6

fio: (groupid=0): err= 0: pid=10921
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=3.9%, 8=95.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.0%, 50=10.3%, 100=47.6%
     lat (msec): 250=41.2%, 500=0.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=10922
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=5.9%, 8=93.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=2.8%, 50=8.2%, 100=44.8%
     lat (msec): 250=42.5%, 500=1.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=10923
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=5.2%, 8=94.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.1%, 20=1.6%, 50=11.2%, 100=34.0%
     lat (msec): 250=50.7%, 500=1.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3636/2530, merge=631/249, ticks=43360/42968, in_queue=86324, util=99.18%
0.15user 0.36system 0:21.92elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
368728inputs+245568outputs (0major+2457minor)pagefaults 0swaps