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] [11.1% done] [ 10305/ 10105 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [16.0% done] [  8143/ 11271 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [20.8% done] [ 13491/  4372 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [24.0% done] [  7789/  8159 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [28.0% done] [  9330/  4917 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [30.8% done] [  7655/  8423 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [33.3% done] [ 10957/  4620 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [37.0% done] [ 11625/  3624 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [40.7% done] [ 14000/  1053 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [44.4% done] [ 12117/  2226 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.4% done] [  6334/  6400 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [50.0% done] [  9782/  3672 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.7% done] [  7451/  4946 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [55.2% done] [  5603/  4811 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [56.7% done] [  4401/  6141 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [58.1% done] [  7846/  2001 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [61.3% done] [  4356/  3725 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [62.5% done] [  3400/  4462 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [63.6% done] [  5271/  2639 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [64.7% done] [  5688/  1613 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12131, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12130, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=12132, got signal=6

fio: (groupid=0): err= 0: pid=12130
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=3.6%, 8=96.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.2%, 50=5.8%, 100=41.0%
     lat (msec): 250=50.8%, 500=1.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12131
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.5%, 8=94.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=2.3%, 50=6.5%, 100=43.8%
     lat (msec): 250=44.9%, 500=1.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=12132
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.1%, 8=94.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=2.1%, 50=9.2%, 100=35.5%
     lat (msec): 250=50.4%, 500=2.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3857/2080, merge=586/375, ticks=44588/39992, in_queue=84576, util=99.18%
0.24user 0.28system 0:23.31elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
397480inputs+216544outputs (0major+2461minor)pagefaults 0swaps