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] [15.8% done] [ 16140/  7387 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [21.1% done] [ 11812/ 11987 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [25.0% done] [ 18067/  3351 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [28.6% done] [  5718/ 12068 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [33.3% done] [  8253/  9737 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [36.4% done] [ 14338/  2782 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [40.9% done] [ 13125/  4844 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [45.5% done] [  5473/ 10646 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [47.8% done] [  9404/  6182 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [50.0% done] [  9696/  4132 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [52.0% done] [  2198/  9252 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [56.0% done] [  7679/  3567 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [57.7% done] [  5922/  4189 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [59.3% done] [  6137/  3437 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  5324/  3571 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  6833/  1871 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=6840, got signal=6
Threads: 2: [mm_] [63.3% done] [  4767/  3030 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=6838, got signal=6
Threads: 1: [_m_] [66.7% done] [  7980/     0 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=6839, got signal=6

fio: (groupid=0): err= 0: pid=6838
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=6.8%, 8=92.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=0.2%, 20=1.8%, 50=6.1%, 100=55.6%
     lat (msec): 250=34.7%, 500=0.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=6839
  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=0.1%, 20=2.6%, 50=10.9%, 100=36.4%
     lat (msec): 250=48.5%, 500=0.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=6840
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=4.9%, 8=94.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.2%, 50=9.9%, 100=51.6%
     lat (msec): 250=37.7%, 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=3325/2372, merge=469/150, ticks=38180/50512, in_queue=79188, util=99.22%
0.25user 0.46system 0:20.87elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
372888inputs+241344outputs (0major+2455minor)pagefaults 0swaps