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] [14.3% done] [ 22013/     0 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [18.2% done] [ 10502/  8855 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [22.7% done] [ 13902/  6837 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [26.1% done] [ 10266/  8806 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 11124/  7134 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [ 13609/  3904 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [ 14610/  3408 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [  9858/  5603 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [ 11079/  3973 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [  9810/  4754 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  8025/  5030 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [  4368/  7337 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.6% done] [  6658/  4311 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.2% done] [  4665/  5165 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [58.6% done] [  6691/  2481 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.1% done] [  5397/  3347 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5239, got signal=6
Threads: 2: [mm_] [61.3% done] [  5478/  2456 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5237, got signal=6
Threads: 1: [_m_] [62.5% done] [  4022/  2791 kb/s] [eta 00m:12s]
Threads: 1: [_m_] [65.6% done] [  2818/  3823 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5238, got signal=6

fio: (groupid=0): err= 0: pid=5237
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=4.1%, 8=95.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.0%, 20=0.1%, 50=10.7%, 100=51.6%
     lat (msec): 250=36.3%, 500=0.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5238
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=5.8%, 8=93.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.8%, 50=19.2%, 100=24.1%
     lat (msec): 250=53.1%, 500=1.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5239
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.3%, 8=93.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.4%, 50=12.6%, 100=49.6%
     lat (msec): 250=36.8%, 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=3707/2373, merge=514/105, ticks=45096/32316, in_queue=77384, util=98.99%
0.19user 0.38system 0:21.95elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
402856inputs+211240outputs (0major+2458minor)pagefaults 0swaps