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] [ 15067/  8232 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [19.0% done] [ 10941/  9652 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [22.7% done] [ 16534/  3868 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [27.3% done] [ 15318/  2981 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [30.4% done] [  9565/  8777 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [ 16196/  2375 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [39.1% done] [ 12438/  1800 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [41.7% done] [  6314/  8289 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [44.0% done] [  8895/  5214 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [ 10327/  4905 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  9790/  3725 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.8% done] [ 10630/  2677 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [55.6% done] [  4104/  7813 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [59.3% done] [  7313/  3795 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  6786/  2490 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  4881/  3668 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  2519/  4738 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=22416, got signal=6
Threads: 2: [m_m] [64.5% done] [  4405/  3046 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=22415, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=22417, got signal=6

fio: (groupid=0): err= 0: pid=22415
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=5.5%, 8=94.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.2%, 20=2.1%, 50=7.7%, 100=42.2%
     lat (msec): 250=46.7%, 500=0.7%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=22416
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=5.1%, 8=94.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=0.2%, 20=2.0%, 50=6.9%, 100=52.5%
     lat (msec): 250=38.0%, 500=0.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=22417
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.8%, 8=95.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=1.1%, 50=6.5%, 100=46.9%
     lat (msec): 250=43.5%, 500=1.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3653/2112, merge=889/187, ticks=43928/33592, in_queue=77520, util=98.95%
0.20user 0.40system 0:21.48elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
419640inputs+194552outputs (0major+2462minor)pagefaults 0swaps