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] [12.0% done] [  9042/  8785 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [16.0% done] [  9431/  9211 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [19.2% done] [  8805/  7054 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [23.1% done] [  6703/ 10526 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [26.9% done] [  5010/ 11662 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [30.8% done] [ 15127/  2863 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [34.6% done] [ 14846/  2713 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [38.5% done] [ 13177/  2929 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [42.3% done] [ 17034/     0 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [46.2% done] [ 10197/  5657 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.1% done] [  6593/  7846 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  8033/  3909 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [53.6% done] [ 10876/  2119 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [57.1% done] [  7703/  2627 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [58.6% done] [  3388/  6178 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  9729/   553 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [63.3% done] [  9485/   719 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [64.5% done] [  6719/  1053 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=30381, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=30380, got signal=6
Threads: 1: [m__] [65.6% done] [  4543/  1769 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=30379, got signal=6

fio: (groupid=0): err= 0: pid=30379
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=7.9%, 8=91.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=3.1%, 50=12.0%, 100=36.2%
     lat (msec): 250=47.3%, 500=0.4%, 750=0.4%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=30380
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.6%, 8=93.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.2%, 50=8.0%, 100=48.1%
     lat (msec): 250=41.3%, 500=0.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=30381
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=7.1%, 8=92.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.8%, 50=10.7%, 100=43.9%
     lat (msec): 250=44.0%, 500=0.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=4068/2084, merge=483/270, ticks=49084/36400, in_queue=85476, util=99.01%
0.49user 0.39system 0:22.07elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k
397032inputs+217152outputs (0major+2452minor)pagefaults 0swaps