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] [14.3% done] [ 16009/  5731 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [18.2% done] [ 14915/  5967 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [21.7% done] [ 11108/  7297 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [  8826/  9843 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [  9935/  8663 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [33.3% done] [ 13199/  4901 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [  9833/  7172 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [  7378/  6841 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [  5910/  9587 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [  5983/  7996 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [ 11690/  2056 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  9794/  3941 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [ 10587/  1635 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  5657/  5889 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  1622/  6605 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  6479/  2534 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=28907, got signal=6
Threads: 2: [m_m] [63.3% done] [  8045/   984 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=28908, got signal=6
Threads: 1: [m__] [64.5% done] [  6139/  1832 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=28906, got signal=6

fio: (groupid=0): err= 0: pid=28906
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=5.1%, 8=94.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.1%, 20=1.5%, 50=9.5%, 100=46.2%
     lat (msec): 250=41.0%, 500=0.8%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=28907
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.7%, 8=93.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.3%, 20=2.4%, 50=8.1%, 100=51.0%
     lat (msec): 250=37.7%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=28908
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=6.0%, 8=93.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.5%, 50=10.8%, 100=43.0%
     lat (msec): 250=43.4%, 500=0.5%, 750=0.2%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3633/2339, merge=684/140, ticks=43668/37264, in_queue=80928, util=99.06%
0.18user 0.39system 0:21.12elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
390816inputs+223248outputs (0major+2457minor)pagefaults 0swaps