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] [ 16721/  6013 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [19.0% done] [ 19515/  3339 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [22.7% done] [ 14586/  5820 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [27.3% done] [  9606/  8740 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [30.4% done] [ 10331/  9326 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [  6749/  9736 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [37.5% done] [  7695/  7960 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [  7204/  7448 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [  5430/  8187 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [ 10445/  4034 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  7948/  6379 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  8659/  4030 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  6150/  4897 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  8944/  2497 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  6135/  3653 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  5336/  3721 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  7785/   694 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=22656, got signal=6
Threads: 2: [mm_] [64.5% done] [  4706/  2782 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=22655, got signal=6
Threads: 1: [m__] [67.7% done] [  6101/   821 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=22654, got signal=6

fio: (groupid=0): err= 0: pid=22654
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.5%, 8=94.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.5%, 50=10.5%, 100=48.9%
     lat (msec): 250=37.5%, 500=0.8%, 750=0.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=22655
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.6%, 8=94.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.5%, 50=10.2%, 100=37.2%
     lat (msec): 250=50.0%, 500=0.4%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=22656
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.4%, 4=4.4%, 8=95.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.7%, 20=1.5%, 50=7.5%, 100=51.2%
     lat (msec): 250=38.8%, 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=3642/2456, merge=379/329, ticks=42884/39480, in_queue=82364, util=98.25%
0.17user 0.47system 0:21.72elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
387912inputs+226032outputs (0major+2461minor)pagefaults 0swaps