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] [ 15171/  3371 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [17.4% done] [ 15888/  3774 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [ 18490/  1895 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [ 18139/  2340 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [29.2% done] [  6426/ 11783 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [ 10697/  5426 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 15066/  3225 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [  8549/  6590 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [  8944/  6231 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [  7524/  6642 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [ 12539/  2019 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [ 14256/     0 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  6508/  5031 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  1561/  8078 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  3961/  5173 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  5922/  2924 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  7358/   825 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21249, got signal=6
Threads: 2: [mm_] [64.5% done] [  5108/  2090 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21248, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21247, got signal=6

fio: (groupid=0): err= 0: pid=21247
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=5.6%, 8=93.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=0.1%, 20=3.2%, 50=8.2%, 100=43.6%
     lat (msec): 250=42.9%, 500=1.2%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=21248
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.4%, 8=95.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.7%, 50=7.8%, 100=51.0%
     lat (msec): 250=39.0%, 500=1.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=21249
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.4%, 4=5.8%, 8=93.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.5%, 20=2.0%, 50=6.2%, 100=51.7%
     lat (msec): 250=38.6%, 500=0.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3819/1922, merge=618/242, ticks=45696/30892, in_queue=76584, util=98.91%
0.18user 0.34system 0:21.34elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
430632inputs+184112outputs (0major+2459minor)pagefaults 0swaps