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] [ 16977/  6296 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [18.2% done] [ 14622/  7272 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [21.7% done] [  9477/  9912 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [ 12694/  6809 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 17282/     0 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [33.3% done] [ 11446/  6654 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 11836/  7065 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [41.7% done] [  9290/  6646 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [ 13463/  1822 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [ 14773/  1016 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [ 10726/  3534 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  8627/  4445 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [ 11140/  1346 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  6097/  3742 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  4677/  3595 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  5596/  3957 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17227, got signal=6
Threads: 2: [m_m] [63.3% done] [  4470/  2371 kb/s] [eta 00m:11s]
Threads: 2: [m_m] [64.5% done] [  3437/  2851 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17226, got signal=6
Threads: 1: [__m] [67.7% done] [  3729/  3449 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17228, got signal=6

fio: (groupid=0): err= 0: pid=17226
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=5.5%, 8=94.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.1%, 20=2.4%, 50=8.0%, 100=50.4%
     lat (msec): 250=38.1%, 500=0.5%, 750=0.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=17227
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.0%, 8=93.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.7%, 50=10.3%, 100=50.3%
     lat (msec): 250=38.2%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=17228
  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=0.0%, 4=0.4%, 10=0.2%, 20=0.5%, 50=10.8%, 100=45.8%
     lat (msec): 250=41.2%, 500=0.8%, 750=0.1%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3794/2050, merge=739/193, ticks=46420/30052, in_queue=76456, util=99.32%
0.26user 0.44system 0:21.51elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
420536inputs+193568outputs (0major+2463minor)pagefaults 0swaps