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] [ 18407/  2604 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [15.4% done] [ 17661/  3188 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [20.0% done] [ 15761/  3046 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [23.1% done] [ 13443/  6605 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [26.9% done] [  7081/  9717 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [29.6% done] [ 12686/  3640 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [33.3% done] [  9664/  6312 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [37.0% done] [  6373/  9961 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [39.3% done] [ 10868/  3912 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [42.9% done] [  8981/  1984 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [44.8% done] [  9046/  4954 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [48.3% done] [  4075/  8826 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [50.0% done] [  3372/  8228 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [53.3% done] [ 12218/     0 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [56.7% done] [ 10799/   394 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [58.1% done] [  3888/  4661 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [59.4% done] [  9400/     0 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14559, got signal=6
Threads: 2: [mm_] [62.5% done] [  7562/   906 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14558, got signal=6
Threads: 1: [m__] [63.6% done] [  5784/  1073 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=14557, got signal=6

fio: (groupid=0): err= 0: pid=14557
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.2%, 4=5.9%, 8=93.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=1.7%, 50=16.1%, 100=30.0%
     lat (msec): 250=49.3%, 500=2.1%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=14558
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.3%, 4=6.7%, 8=92.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.2%, 10=0.1%, 20=2.7%, 50=10.7%, 100=43.1%
     lat (msec): 250=41.6%, 500=1.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=14559
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=6.2%, 8=93.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.5%, 50=8.7%, 100=48.3%
     lat (msec): 250=40.5%, 500=0.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=4122/1742, merge=589/501, ticks=47456/29464, in_queue=76912, util=98.27%
0.30user 0.54system 0:22.46elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
428760inputs+185888outputs (0major+2462minor)pagefaults 0swaps