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: [Fmm] [7.0% done] [  4600/   484 kb/s] [eta 00m:40s]
Threads: 3: [Fmm] [7.7% done] [  1584/     0 kb/s] [eta 00m:48s]
Threads: 3: [Fmm] [8.3% done] [  1464/     0 kb/s] [eta 00m:55s]
Threads: 3: [Fmm] [10.3% done] [  3864/   658 kb/s] [eta 00m:52s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=6781, got signal=6
Threads: 2: [_Fm] [35.0% done] [  7927/ 72235 kb/s] [eta 00m:13s]
Threads: 2: [_Fm] [34.8% done] [   178/     0 kb/s] [eta 00m:15s]
Threads: 2: [_Fm] [36.0% done] [   406/     0 kb/s] [eta 00m:16s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=6782, got signal=6
Threads: 1: [__m] [40.0% done] [  7321/     0 kb/s] [eta 00m:15s]
Threads: 1: [__m] [52.4% done] [  9648/  7667 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=6783, got signal=6

fio: (groupid=0): err= 0: pid=6781
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.8%, 2=65.0%, 4=33.0%, 8=1.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=92.9%, 4=4.3%, 10=1.5%, 20=0.0%, 50=0.5%, 100=0.5%
     lat (msec): 250=0.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=6782
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=26.4%, 2=55.8%, 4=9.2%, 8=8.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=78.5%, 4=7.3%, 10=2.0%, 20=1.3%, 50=2.8%, 100=2.6%
     lat (msec): 250=2.1%, 500=1.1%, 750=0.5%, 1000=1.2%, >=2000=0.4%
fio: (groupid=0): err= 0: pid=6783
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=43.6%, 4=34.8%, 8=21.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=64.5%, 4=6.0%, 10=2.4%, 20=0.5%, 50=9.9%, 100=8.1%
     lat (msec): 250=4.0%, 500=1.7%, 750=0.1%, 1000=1.3%, >=2000=1.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=1041/2624, merge=39/54347, ticks=32540/1003160, in_queue=1035696, util=91.45%
2.21user 2.67system 0:12.09elapsed 40%CPU (0avgtext+0avgdata 0maxresident)k
120040inputs+519680outputs (0major+2471minor)pagefaults 0swaps