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] [ 14506/  6213 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [17.4% done] [ 15429/  6582 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [ 14709/  6013 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [ 18895/  1458 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [30.4% done] [  8114/  9305 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [33.3% done] [ 14146/  3697 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 15152/  2381 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [  8317/  6083 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [ 11637/  3449 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [  4778/  8850 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [ 11511/  3262 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [ 11670/   999 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  7363/  3941 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  4067/  6119 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  3957/  6052 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  2324/  6964 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  4417/  4043 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [64.5% done] [  4181/  2958 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=29472, got signal=6
fio: pid=29473, got signal=6
Threads: 1: [m__] [67.7% done] [  4501/  2456 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=29471, got signal=6

fio: (groupid=0): err= 0: pid=29471
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=5.4%, 8=94.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.2%, 20=3.6%, 50=7.0%, 100=39.9%
     lat (msec): 250=47.1%, 500=1.5%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=29472
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.7%, 8=95.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.5%, 50=8.2%, 100=50.7%
     lat (msec): 250=38.9%, 500=0.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=29473
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=3.8%, 8=95.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.4%, 50=8.9%, 100=38.8%
     lat (msec): 250=50.2%, 500=1.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3581/2469, merge=529/156, ticks=44724/37788, in_queue=82512, util=98.51%
0.25user 0.32system 0:21.82elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
401976inputs+212104outputs (0major+2456minor)pagefaults 0swaps