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] [13.6% done] [ 10708/ 10000 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [19.0% done] [ 15070/  7098 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [23.8% done] [ 10340/ 10228 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [27.3% done] [ 14408/  4344 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [31.8% done] [  7235/ 11847 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [34.8% done] [ 14424/  2992 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [39.1% done] [ 12840/  5185 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [41.7% done] [ 10892/  4508 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [  7048/  7344 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [  9597/  5099 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [  7072/  6280 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  5132/  5456 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.7% done] [ 12144/   168 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [59.3% done] [  8000/  2784 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  6492/  3084 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  4552/  3759 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=23431, got signal=6
Threads: 2: [m_m] [63.3% done] [  7156/  1788 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=23432, got signal=6
Threads: 1: [m__] [66.7% done] [  7760/     0 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=23430, got signal=6

fio: (groupid=0): err= 0: pid=23430
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=16.9%, 8=82.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.3%, 20=3.0%, 50=11.4%, 100=33.2%
     lat (msec): 250=50.6%, 500=1.0%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=23431
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=15.1%, 8=84.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.3%, 20=1.3%, 50=9.3%, 100=44.3%
     lat (msec): 250=44.3%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=23432
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=14.9%, 8=84.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=1.4%, 50=12.2%, 100=38.2%
     lat (msec): 250=46.9%, 500=0.3%, 750=0.2%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3563/2258, merge=495/141, ticks=41492/38028, in_queue=79516, util=99.07%
0.46user 0.36system 0:21.09elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
372600inputs+241408outputs (0major+2438minor)pagefaults 0swaps