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] [13.0% done] [ 10717/ 10705 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [17.4% done] [  9797/ 10451 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [22.7% done] [ 16196/  4787 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [27.3% done] [ 10630/  8947 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [30.4% done] [  6109/ 12365 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [34.8% done] [  4400/ 12905 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [39.1% done] [  8541/  7964 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [41.7% done] [ 10404/  6194 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [45.8% done] [  8387/  7463 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [48.0% done] [ 12182/  2595 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [52.0% done] [  9963/  5343 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [53.8% done] [  5523/  5934 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.7% done] [  7931/  3266 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [59.3% done] [  6304/  2790 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [60.7% done] [  8671/  1399 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  8285/   862 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  3498/  4714 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmV] [64.5% done] [  5623/   889 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3000, got signal=6
fio: pid=3002, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3001, got signal=6

fio: (groupid=0): err= 0: pid=3000
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=6.2%, 8=93.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=0.1%, 20=1.5%, 50=7.4%, 100=46.8%
     lat (msec): 250=42.9%, 500=0.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3001
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.4%, 4=6.1%, 8=93.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.1%, 20=1.4%, 50=10.4%, 100=44.2%
     lat (msec): 250=42.0%, 500=1.1%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3002
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=6.3%, 8=93.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=0.9%, 50=6.9%, 100=49.3%
     lat (msec): 250=42.0%, 500=0.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3324/2457, merge=486/234, ticks=38132/41156, in_queue=79280, util=98.40%
0.38user 0.32system 0:21.56elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
347336inputs+267144outputs (0major+2467minor)pagefaults 0swaps