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] [ 16440/  3607 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [16.7% done] [ 10335/  8590 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [20.8% done] [  7195/ 11718 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [24.0% done] [ 13748/  4429 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [28.0% done] [  7053/  7354 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [30.8% done] [ 11909/  5356 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [34.6% done] [  6251/  9078 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [37.0% done] [ 10868/  5230 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [40.7% done] [  9786/  4706 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [42.9% done] [  6166/  7927 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [46.4% done] [  6097/  6703 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [48.3% done] [  7866/  4722 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [51.7% done] [  8859/  2981 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [53.3% done] [  5161/  4925 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [56.7% done] [  9278/  1732 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [58.1% done] [  5609/  3721 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [59.4% done] [  5491/  3823 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [62.5% done] [  6662/  1956 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=24239, got signal=6
Threads: 2: [mm_] [63.6% done] [  3949/  2371 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=24238, got signal=6
Threads: 1: [m__] [64.7% done] [  3921/  3543 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=24237, got signal=6

fio: (groupid=0): err= 0: pid=24237
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.5%, 8=94.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.1%, 10=0.2%, 20=1.4%, 50=10.8%, 100=30.4%
     lat (msec): 250=55.6%, 500=0.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=24238
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.5%, 4=3.0%, 8=96.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.0%, 10=0.3%, 20=1.7%, 50=5.1%, 100=36.7%
     lat (msec): 250=55.1%, 500=0.7%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=24239
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.2%, 4=3.2%, 8=96.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=1.0%, 50=6.7%, 100=39.1%
     lat (msec): 250=52.6%, 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=3562/2528, merge=284/165, ticks=47188/40356, in_queue=87532, util=99.26%
0.16user 0.39system 0:23.04elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
366520inputs+247744outputs (0major+2465minor)pagefaults 0swaps