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] [  6849/ 14199 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [17.4% done] [ 15099/  5274 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [ 18092/  3119 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [ 13775/  6737 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [29.2% done] [  8383/  8802 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [ 10274/  7382 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 10473/  5812 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [ 11145/  4921 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [ 10730/  4868 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [ 11881/  1909 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  6979/  6926 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [  5572/  6800 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  9176/  2713 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [ 10372/     0 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  6656/  2360 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  4702/  4173 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  4571/  3428 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19313, got signal=6
Threads: 2: [mm_] [64.5% done] [  4693/  1850 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19312, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19311, got signal=6

fio: (groupid=0): err= 0: pid=19311
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=6.7%, 8=92.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.1%, 20=2.5%, 50=10.3%, 100=43.3%
     lat (msec): 250=42.4%, 500=0.6%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=19312
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.4%, 4=4.5%, 8=94.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=0.1%, 20=0.4%, 50=8.8%, 100=45.4%
     lat (msec): 250=44.1%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=19313
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.3%, 8=95.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.2%, 50=7.6%, 100=52.3%
     lat (msec): 250=39.3%, 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=3954/1896, merge=585/183, ticks=48104/26696, in_queue=74792, util=99.05%
0.20user 0.35system 0:21.34elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
428328inputs+185824outputs (0major+2456minor)pagefaults 0swaps