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] [12.5% done] [ 14364/  7822 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [18.2% done] [ 18991/  5808 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [21.7% done] [ 10860/  8004 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [ 13528/  7553 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [ 17803/  1159 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [33.3% done] [ 12804/  4689 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 13352/  3063 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [  9687/  5489 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [  7089/  7150 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [  6855/  6282 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [ 10361/  3031 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [ 11405/  1879 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  5967/  4445 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  4872/  6491 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  3340/  6257 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  5845/  2391 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15944, got signal=6
Threads: 2: [m_m] [61.3% done] [  4339/  2344 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15945, got signal=6
Threads: 1: [m__] [64.5% done] [  8179/     0 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=15943, got signal=6

fio: (groupid=0): err= 0: pid=15943
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=7.5%, 8=92.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.3%, 50=18.0%, 100=30.7%
     lat (msec): 250=48.2%, 500=0.8%, 750=0.6%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15944
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.5%, 8=95.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.3%, 50=9.0%, 100=51.3%
     lat (msec): 250=38.9%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=15945
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.9%, 8=93.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.0%, 20=1.4%, 50=9.5%, 100=45.7%
     lat (msec): 250=42.1%, 500=0.4%, 750=0.4%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3448/2334, merge=637/78, ticks=42840/34588, in_queue=77424, util=97.64%
0.26user 0.78system 0:21.73elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
390752inputs+223568outputs (0major+2454minor)pagefaults 0swaps