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] [ 18655/  1978 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [16.7% done] [ 11307/  9306 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [20.8% done] [ 10376/  8309 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [25.0% done] [  5283/ 13235 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [29.2% done] [ 14988/  4295 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [ 15509/  2818 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [36.0% done] [ 13064/  2677 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.0% done] [ 11502/  4498 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [ 13307/  2730 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [ 10341/  4230 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  6219/  7036 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  7707/  4429 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [ 11332/  1134 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  7817/  2204 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  8476/  1472 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  2530/  5035 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19570, got signal=6
Threads: 2: [m_m] [63.3% done] [  6825/  1407 kb/s] [eta 00m:11s]
Threads: 2: [m_m] [66.7% done] [  5698/  1431 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19569, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19571, got signal=6

fio: (groupid=0): err= 0: pid=19569
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.3%, 8=93.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.2%, 50=11.9%, 100=50.6%
     lat (msec): 250=35.0%, 500=0.7%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=19570
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.2%, 8=94.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=0.4%, 50=9.7%, 100=59.3%
     lat (msec): 250=30.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=19571
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=4.8%, 8=94.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.8%, 50=8.5%, 100=47.4%
     lat (msec): 250=40.5%, 500=1.1%, 750=0.1%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=4035/1857, merge=620/80, ticks=47100/26584, in_queue=73672, util=98.95%
0.18user 0.33system 0:21.17elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
449504inputs+164496outputs (0major+2455minor)pagefaults 0swaps