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] [ 15550/  6391 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [17.4% done] [ 11608/  6410 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [ 12373/  6152 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [25.0% done] [ 10030/  8330 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [29.2% done] [  8916/  9334 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [ 10699/  7367 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [36.0% done] [  8472/  9253 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.0% done] [  7887/  9090 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [42.3% done] [  9416/  5055 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [ 10063/  4657 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.1% done] [ 11970/  1382 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.9% done] [  8623/  4767 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.6% done] [  7879/  3718 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [57.1% done] [  9638/  2214 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  6597/  3123 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [62.1% done] [  4295/  4006 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2707, got signal=6
Threads: 2: [_mm] [61.3% done] [  3632/  4157 kb/s] [eta 00m:12s]
Threads: 2: [_mm] [62.5% done] [  3075/  3599 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2708, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 1: [__m] [67.7% done] [  6078/  1190 kb/s] [eta 00m:10s]
fio: pid=2709, got signal=6

fio: (groupid=0): err= 0: pid=2707
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.3%, 4=5.3%, 8=94.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.0%, 20=0.9%, 50=8.3%, 100=53.5%
     lat (msec): 250=36.6%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2708
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=5.5%, 8=94.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=1.4%, 50=9.9%, 100=48.4%
     lat (msec): 250=39.3%, 500=0.4%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2709
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.5%, 4=6.4%, 8=92.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=0.8%, 20=2.8%, 50=12.4%, 100=41.8%
     lat (msec): 250=40.6%, 500=0.7%, 750=0.3%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3823/2283, merge=459/122, ticks=45148/31600, in_queue=76740, util=99.11%
0.22user 0.34system 0:21.48elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
401392inputs+212968outputs (0major+2462minor)pagefaults 0swaps