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] [13.0% done] [ 16965/  3750 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [17.4% done] [ 13780/  6691 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [ 12515/  8891 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [25.0% done] [ 12296/  7748 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [29.2% done] [ 18474/   569 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [  8436/  9725 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [  8923/  7350 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [  5804/  8667 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [  6414/  8985 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [ 14933/  1003 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [ 10540/  3116 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  6479/  6019 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  6334/  4465 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  8619/  2115 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  5824/  3961 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  6227/  3306 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2024, got signal=6
Threads: 2: [m_m] [63.3% done] [  4645/  3262 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2025, got signal=6
Threads: 1: [m__] [66.7% done] [  5409/  2086 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2023, got signal=6

fio: (groupid=0): err= 0: pid=2023
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=4.9%, 8=94.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.6%, 50=13.9%, 100=44.7%
     lat (msec): 250=38.8%, 500=1.2%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2024
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.4%, 8=93.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.3%, 20=1.6%, 50=8.3%, 100=48.7%
     lat (msec): 250=40.6%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2025
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=5.2%, 8=94.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.6%, 50=8.3%, 100=47.2%
     lat (msec): 250=41.4%, 500=0.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3735/2151, merge=760/145, ticks=45384/28656, in_queue=74036, util=99.01%
0.42user 0.36system 0:20.90elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
409832inputs+204040outputs (0major+2457minor)pagefaults 0swaps