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] [12.5% done] [ 12377/  7846 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [17.4% done] [ 17307/  3302 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [21.7% done] [  9692/ 10213 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [25.0% done] [  8139/ 11145 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [29.2% done] [ 10486/  7858 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [32.0% done] [ 10319/  7638 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [36.0% done] [  9041/  8110 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.0% done] [ 11323/  4876 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [  9253/  6796 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [  7211/  6080 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.1% done] [  4795/  8139 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.9% done] [ 10608/  3168 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.6% done] [  6857/  4791 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [57.1% done] [ 10022/  1602 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  6626/  3681 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  2261/  6133 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [63.3% done] [  4348/  4531 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=30899, got signal=6
Threads: 2: [mm_] [64.5% done] [  6105/  1801 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=30898, got signal=6
Threads: 1: [m__] [65.6% done] [  3299/  2620 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=30897, got signal=6

fio: (groupid=0): err= 0: pid=30897
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=4.6%, 8=95.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=1.4%, 50=8.8%, 100=41.4%
     lat (msec): 250=46.7%, 500=0.8%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=30898
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.3%, 8=95.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.2%, 50=9.5%, 100=43.5%
     lat (msec): 250=45.6%, 500=0.4%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=30899
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.4%, 8=94.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.1%, 20=1.0%, 50=7.8%, 100=43.3%
     lat (msec): 250=47.3%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3211/2948, merge=414/296, ticks=39796/46128, in_queue=85920, util=98.44%
0.18user 0.52system 0:22.14elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
334672inputs+279576outputs (0major+2462minor)pagefaults 0swaps