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] [15.0% done] [ 19418/  3766 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [20.0% done] [ 17567/  2818 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [23.8% done] [ 16969/  3945 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [28.6% done] [ 16408/  3498 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [31.8% done] [ 12548/  5352 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [36.4% done] [  9281/  7736 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [39.1% done] [  8899/  7183 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [41.7% done] [  4539/  9318 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [ 12686/  3701 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [ 10982/  4421 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [ 10888/  3644 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  4836/  7805 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  2704/  7240 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  1834/  7439 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  6536/  2981 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  3652/  4571 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=4419, got signal=6
Threads: 2: [m_m] [63.3% done] [  5190/  3197 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=4420, got signal=6
Threads: 1: [m__] [64.5% done] [  6979/   565 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=4418, got signal=6

fio: (groupid=0): err= 0: pid=4418
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=6.2%, 8=93.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=0.1%, 20=0.8%, 50=14.0%, 100=42.0%
     lat (msec): 250=42.1%, 500=0.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=4419
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.3%, 4=4.7%, 8=94.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.2%, 50=8.1%, 100=46.9%
     lat (msec): 250=43.3%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=4420
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 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=1.9%, 50=8.4%, 100=45.2%
     lat (msec): 250=44.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3404/2264, merge=518/168, ticks=42588/28936, in_queue=71520, util=99.06%
0.17user 0.56system 0:21.38elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
409080inputs+205256outputs (0major+2459minor)pagefaults 0swaps