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] [15.0% done] [ 17013/  5428 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [20.0% done] [ 16152/  7289 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [23.8% done] [  9118/  9931 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [27.3% done] [ 13754/  5376 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [31.8% done] [ 17716/  1422 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [34.8% done] [ 14921/  2442 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [39.1% done] [ 12170/  5741 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [43.5% done] [  3206/ 10654 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [45.8% done] [  7769/  7050 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [  9005/  3432 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [ 10382/  2637 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  8460/  4502 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.7% done] [  7899/  3210 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [59.3% done] [ 11739/     0 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  2820/  5615 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [64.3% done] [  8309/  1019 kb/s] [eta 00m:10s]
Threads: 3: [mmm] [65.5% done] [  3685/  4835 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5443, got signal=6
Threads: 2: [_mm] [66.7% done] [  6013/   922 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5445, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5444, got signal=6

fio: (groupid=0): err= 0: pid=5443
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.7%, 4=6.1%, 8=93.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=0.2%, 20=1.0%, 50=8.6%, 100=47.7%
     lat (msec): 250=42.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5444
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.5%, 8=94.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.4%, 50=8.2%, 100=50.1%
     lat (msec): 250=39.5%, 500=0.9%, 750=0.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5445
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=4.7%, 8=94.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.2%, 50=9.0%, 100=49.0%
     lat (msec): 250=40.6%, 500=0.2%, 750=0.4%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3787/1953, merge=605/61, ticks=45256/27036, in_queue=72288, util=98.96%
0.28user 0.31system 0:21.28elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
429472inputs+184768outputs (0major+2449minor)pagefaults 0swaps