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] [11.5% done] [ 13475/  8659 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [15.4% done] [  8004/ 11987 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [20.0% done] [ 15094/  4950 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [23.1% done] [ 15403/  4372 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [26.9% done] [ 12698/  4535 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [29.6% done] [ 13756/  4571 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [33.3% done] [ 17823/     0 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [37.0% done] [ 10323/  5539 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [40.7% done] [ 11743/  4319 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [42.9% done] [ 12165/  1773 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [46.4% done] [  9131/  4022 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [48.3% done] [  9721/  2135 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [51.7% done] [  5995/  4327 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [53.3% done] [  7008/  3201 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [54.8% done] [  5849/  3681 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [58.1% done] [  5068/  4193 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21579, got signal=6
Threads: 2: [mm_] [59.4% done] [  4559/  2233 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21578, got signal=6
Threads: 1: [m__] [60.6% done] [  4136/  2753 kb/s] [eta 00m:13s]
Threads: 1: [m__] [65.6% done] [  7712/     0 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21577, got signal=6

fio: (groupid=0): err= 0: pid=21577
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=9.2%, 8=90.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.3%, 20=3.9%, 50=22.5%, 100=20.4%
     lat (msec): 250=51.3%, 500=0.8%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=21578
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.8%, 8=94.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.4%, 50=10.6%, 100=50.2%
     lat (msec): 250=36.7%, 500=0.4%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=21579
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.9%, 8=94.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.1%, 50=9.3%, 100=59.7%
     lat (msec): 250=30.3%, 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=4012/1850, merge=619/154, ticks=46360/27612, in_queue=73964, util=98.91%
0.21user 0.46system 0:21.81elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
429352inputs+184880outputs (0major+2456minor)pagefaults 0swaps