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] [12.0% done] [ 11845/  7732 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [16.7% done] [ 13487/  7488 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [20.8% done] [ 13780/  6658 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [25.0% done] [ 15537/  2692 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [28.0% done] [  8468/  9009 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [32.0% done] [ 16652/  1590 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [36.0% done] [ 15444/  2196 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [38.5% done] [  8805/  6395 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [42.3% done] [ 11112/  4311 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.4% done] [ 12715/  1749 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.4% done] [ 12678/     0 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [50.0% done] [ 13984/     0 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.7% done] [ 12650/   280 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [55.2% done] [  5161/  5027 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [56.7% done] [  6487/  2102 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [58.1% done] [  5218/  3319 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21394, got signal=6
Threads: 2: [mm_] [59.4% done] [  5397/  1940 kb/s] [eta 00m:13s]
Threads: 2: [mm_] [58.8% done] [  2795/  4477 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21392, got signal=6
Threads: 1: [_m_] [65.6% done] [  4014/  3733 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21393, got signal=6

fio: (groupid=0): err= 0: pid=21392
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=5.3%, 8=94.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.3%, 20=0.5%, 50=12.5%, 100=42.6%
     lat (msec): 250=43.0%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=21393
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=6.8%, 8=92.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=3.9%, 50=18.3%, 100=24.3%
     lat (msec): 250=51.3%, 500=1.3%, 750=0.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=21394
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=7.7%, 8=92.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.5%, 20=2.6%, 50=9.0%, 100=57.1%
     lat (msec): 250=30.5%, 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=4374/1728, merge=658/90, ticks=52228/24720, in_queue=76948, util=99.28%
0.17user 0.51system 0:22.05elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
453576inputs+160480outputs (0major+2454minor)pagefaults 0swaps