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] [12.5% done] [ 12963/  8822 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [16.7% done] [ 13951/  6886 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [21.7% done] [ 16127/  4815 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [25.0% done] [ 19013/  2230 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [30.4% done] [ 12686/  5985 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [  5751/ 12698 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [ 13959/  3428 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [  7687/  7793 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [  7435/  7927 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [  6239/  8122 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [ 10595/  3904 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  4852/  5824 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  7016/  4547 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  6123/  4811 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  7081/  2550 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  4307/  4820 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  7752/  1151 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=20792, got signal=6
Threads: 2: [mm_] [66.7% done] [  6996/     0 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=20790, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=20791, got signal=6

fio: (groupid=0): err= 0: pid=20790
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=4.7%, 8=94.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.2%, 10=0.1%, 20=1.7%, 50=5.9%, 100=44.5%
     lat (msec): 250=46.2%, 500=0.4%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=20791
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=5.0%, 8=94.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.7%, 50=8.3%, 100=47.9%
     lat (msec): 250=40.8%, 500=0.7%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=20792
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=6.9%, 8=92.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=1.8%, 50=7.6%, 100=49.9%
     lat (msec): 250=40.0%, 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=3520/2299, merge=425/131, ticks=41700/33252, in_queue=74944, util=99.14%
0.22user 0.29system 0:21.15elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
379528inputs+234712outputs (0major+2459minor)pagefaults 0swaps