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] [ 13966/  7558 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [19.0% done] [ 10823/  8834 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [23.8% done] [ 17547/  3237 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [27.3% done] [ 13365/  6699 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [31.8% done] [  9703/  8643 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [34.8% done] [ 11832/  6117 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [39.1% done] [  9849/  5713 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [41.7% done] [  9806/  6202 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [  9996/  5424 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [  7000/  7459 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [ 10522/  3315 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [ 10518/  2098 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.7% done] [ 10046/  2591 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [59.3% done] [  5361/  3982 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  6125/  3445 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  6483/  2513 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13877, got signal=6
Threads: 2: [_mm] [63.3% done] [  3750/  3607 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13878, got signal=6
Threads: 1: [__m] [66.7% done] [  5267/  1826 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13879, got signal=6

fio: (groupid=0): err= 0: pid=13877
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=6.5%, 8=93.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=2.3%, 50=9.1%, 100=48.6%
     lat (msec): 250=39.3%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13878
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=3.8%, 8=96.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.1%, 50=9.6%, 100=48.6%
     lat (msec): 250=40.6%, 500=0.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13879
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.4%, 4=7.7%, 8=91.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.3%, 20=4.9%, 50=10.6%, 100=36.7%
     lat (msec): 250=45.6%, 500=1.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3990/1943, merge=647/113, ticks=48328/26664, in_queue=74992, util=97.85%
0.21user 0.67system 0:21.00elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
429504inputs+184792outputs (0major+2451minor)pagefaults 0swaps