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] [ 14244/  6983 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [16.7% done] [ 16172/  4096 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [20.8% done] [ 10660/  9680 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [25.0% done] [ 11222/  7610 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [29.2% done] [ 10296/  7883 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [  7188/  9984 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 13471/  4401 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [  5824/  9473 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [  4083/ 10193 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [  2656/ 11267 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [ 10335/  3953 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [  3591/  7394 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [  5495/  6060 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  8118/  3851 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  7054/  3108 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  6414/  3681 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  3864/  4295 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=26426, got signal=6
Threads: 2: [m_m] [64.5% done] [  5881/  1411 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=26427, got signal=6
Threads: 1: [m__] [67.7% done] [  5576/  1866 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=26425, got signal=6

fio: (groupid=0): err= 0: pid=26425
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.3%, 8=93.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.9%, 50=9.1%, 100=41.6%
     lat (msec): 250=47.1%, 500=0.4%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=26426
  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=8.8%, 100=43.6%
     lat (msec): 250=46.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=26427
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=6.0%, 8=93.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=2.1%, 50=8.7%, 100=40.5%
     lat (msec): 250=47.4%, 500=0.5%, 750=0.2%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3261/2766, merge=446/171, ticks=39900/39076, in_queue=78976, util=99.26%
0.34user 0.35system 0:21.64elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
341464inputs+272736outputs (0major+2462minor)pagefaults 0swaps