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] [8.8% done] [ 16416/  3607 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [13.3% done] [ 16766/  1777 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [17.9% done] [ 19837/     0 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [22.2% done] [ 11165/  5470 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [26.9% done] [ 15598/  3868 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [29.6% done] [ 12076/  3905 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [34.6% done] [ 12751/  3083 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [38.5% done] [ 16887/   898 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.7% done] [ 11726/  3912 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [44.4% done] [  8130/  4909 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.4% done] [  2965/ 10022 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [50.0% done] [  4201/  7362 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.7% done] [  4750/  5938 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [53.3% done] [  8403/  2635 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [54.8% done] [  8232/  2462 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [58.1% done] [  4994/  3453 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [59.4% done] [  5462/  3664 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [60.6% done] [  4478/  3782 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16152, got signal=6
Threads: 2: [mm_] [61.8% done] [  7760/   691 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16150, got signal=6
Threads: 1: [_m_] [64.7% done] [  5552/  1122 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=16151, got signal=6

fio: (groupid=0): err= 0: pid=16150
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=3.1%, 8=96.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.4%, 50=6.9%, 100=49.3%
     lat (msec): 250=39.9%, 500=3.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=16151
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=7.5%, 8=92.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.7%, 20=3.6%, 50=11.4%, 100=28.9%
     lat (msec): 250=52.9%, 500=1.8%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=16152
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=3.7%, 8=96.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.0%, 50=6.7%, 100=46.4%
     lat (msec): 250=44.2%, 500=0.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=4113/1746, merge=623/376, ticks=47452/50408, in_queue=90100, util=99.07%
0.20user 0.60system 0:23.05elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
446088inputs+167904outputs (0major+2455minor)pagefaults 0swaps