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] [14.3% done] [ 21414/  1068 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [18.2% done] [  6662/ 13150 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [22.7% done] [ 16050/  4986 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [27.3% done] [ 10004/  9557 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [31.8% done] [ 12836/  7062 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [36.4% done] [ 14161/  2974 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [39.1% done] [  9768/  8175 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [43.5% done] [  8924/  6015 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [45.8% done] [ 11841/  3344 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [ 14799/   593 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [52.0% done] [  8521/  4128 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  8362/  3852 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.7% done] [  9485/  1403 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [59.3% done] [  7590/  2523 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  6574/  2791 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [64.3% done] [  4628/  3840 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [63.3% done] [  3945/  3076 kb/s] [eta 00m:11s]
fio: pid=5398, got signal=6
Threads: 2: [m_m] [66.7% done] [  3965/  2925 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5397, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5399, got signal=6

fio: (groupid=0): err= 0: pid=5397
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=5.3%, 8=94.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.2%, 10=0.0%, 20=0.7%, 50=8.9%, 100=42.9%
     lat (msec): 250=46.1%, 500=0.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5398
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.9%, 8=92.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.4%, 50=10.8%, 100=51.7%
     lat (msec): 250=35.7%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5399
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.0%, 8=95.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.4%, 50=9.1%, 100=47.8%
     lat (msec): 250=41.1%, 500=1.0%, 750=0.2%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3595/2106, merge=518/138, ticks=42596/29372, in_queue=71968, util=98.87%
0.42user 0.31system 0:21.17elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
409592inputs+204528outputs (0major+2450minor)pagefaults 0swaps