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] [12.0% done] [ 11288/  8760 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [16.7% done] [ 12734/  7826 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [20.0% done] [  9770/  5039 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [24.0% done] [  9863/  8411 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [28.0% done] [  9472/  8086 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [30.8% done] [ 13906/  3807 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [34.6% done] [ 12068/  3584 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [38.5% done] [ 10024/  7216 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [42.3% done] [  9776/  5099 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [  5609/  9294 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.1% done] [  8541/  4946 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [ 11531/  2237 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [53.6% done] [  8688/  3221 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.2% done] [  6326/  5197 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [58.6% done] [  4458/  5495 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  6101/  3168 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [63.3% done] [  7745/  1605 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.5% done] [  4226/  3254 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=27040, got signal=6
Threads: 2: [_mm] [65.6% done] [  2696/  4006 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=27042, got signal=6
Threads: 1: [_m_] [66.7% done] [  3144/  2672 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=27041, got signal=6

fio: (groupid=0): err= 0: pid=27040
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.0%, 8=93.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.5%, 50=6.9%, 100=45.8%
     lat (msec): 250=44.8%, 500=0.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=27041
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.0%, 8=95.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.0%, 50=11.2%, 100=37.4%
     lat (msec): 250=49.4%, 500=1.1%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=27042
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=6.4%, 8=93.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.6%, 50=9.5%, 100=42.7%
     lat (msec): 250=44.6%, 500=0.7%, 750=0.2%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3809/2423, merge=543/60, ticks=49872/37628, in_queue=87492, util=98.09%
0.42user 0.78system 0:22.82elapsed 5%CPU (0avgtext+0avgdata 0maxresident)k
406200inputs+208048outputs (0major+2459minor)pagefaults 0swaps