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] [ 21609/  2039 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [18.2% done] [ 13902/  6520 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [22.7% done] [  7834/ 11934 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [26.1% done] [ 13435/  6320 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 13340/  6452 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [33.3% done] [ 12275/  2741 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 11841/  5965 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [ 10115/  5466 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [ 10941/  4706 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [ 11934/  3242 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  6666/  6239 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [ 10014/  1688 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [  8916/  2326 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  5568/  5177 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  7248/  2566 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [62.1% done] [  6229/  2620 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [61.3% done] [  4490/  2656 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16558, got signal=6
Threads: 2: [m_m] [62.5% done] [  3555/  4335 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16559, got signal=6
Threads: 1: [m__] [67.7% done] [  6532/   382 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16557, got signal=6

fio: (groupid=0): err= 0: pid=16557
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.9%, 8=92.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=3.0%, 50=14.1%, 100=34.6%
     lat (msec): 250=46.3%, 500=1.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=16558
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.8%, 8=95.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.9%, 50=9.3%, 100=46.0%
     lat (msec): 250=43.2%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=16559
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.3%, 4=4.3%, 8=95.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=0.4%, 50=9.3%, 100=43.9%
     lat (msec): 250=45.1%, 500=0.6%, 750=0.1%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=4004/2045, merge=589/152, ticks=49180/32240, in_queue=81408, util=98.47%
0.27user 0.48system 0:21.62elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
420936inputs+193280outputs (0major+2451minor)pagefaults 0swaps