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] [ 11441/  8745 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [17.4% done] [ 14952/  4811 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [  6152/ 11877 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [25.0% done] [  8956/  8444 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [28.0% done] [  9923/  7228 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [32.0% done] [ 14594/  3640 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [36.0% done] [ 12426/  4311 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [38.5% done] [ 11328/  3689 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [42.3% done] [  3421/ 10402 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [  9013/  6573 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.1% done] [  8818/  4815 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.9% done] [ 13243/  1220 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [ 11332/  1500 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  7009/  4567 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  9156/  2607 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  8350/   829 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  9119/    85 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=27523, got signal=6
Threads: 2: [m_m] [64.5% done] [  6184/  1694 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=27524, got signal=6
Threads: 1: [m__] [67.7% done] [  6756/   691 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=27522, got signal=6

fio: (groupid=0): err= 0: pid=27522
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=6.4%, 8=93.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.3%, 10=0.0%, 20=1.3%, 50=9.3%, 100=41.7%
     lat (msec): 250=46.1%, 500=1.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=27523
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.8%, 8=93.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.7%, 50=7.3%, 100=43.7%
     lat (msec): 250=46.8%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=27524
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.2%, 8=93.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.8%, 50=8.9%, 100=44.4%
     lat (msec): 250=43.8%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=4000/2127, merge=650/65, ticks=48064/36308, in_queue=84372, util=97.87%
0.24user 0.32system 0:21.83elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
408808inputs+205448outputs (0major+2453minor)pagefaults 0swaps