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] [8.1% done] [  5996/ 10856 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [11.8% done] [ 12400/  3732 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [13.5% done] [  3588/ 13376 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [14.3% done] [  3556/ 11640 kb/s] [eta 00m:36s]
Threads: 3: [mmm] [16.3% done] [  7180/  5352 kb/s] [eta 00m:36s]
Threads: 3: [mmm] [19.5% done] [  9820/  3464 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [22.5% done] [  8936/  3472 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [25.0% done] [  7767/  5104 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [28.9% done] [  8128/  4728 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [31.6% done] [ 10324/  1948 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [33.3% done] [  7276/  4672 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.9% done] [  7684/  3376 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [37.5% done] [  6816/  3064 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [40.0% done] [  7260/  3856 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [41.5% done] [  8520/   900 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [43.9% done] [  7504/  2780 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.3% done] [  3232/  5756 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [48.8% done] [  2968/  5516 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [51.2% done] [  6946/  1165 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [52.4% done] [  5810/  2104 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=28334, got signal=6
Threads: 2: [mm_] [53.5% done] [  2775/  4916 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=28333, got signal=6
Threads: 1: [m__] [58.5% done] [  5371/  3799 kb/s] [eta 00m:17s]
Threads: 1: [m__] [64.1% done] [  4705/  3982 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=28332, got signal=6

fio: (groupid=0): err= 0: pid=28332
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.7%, 2=2.5%, 4=30.4%, 8=66.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.8%, 4=0.0%, 10=2.2%, 20=5.5%, 50=30.8%, 100=11.8%
     lat (msec): 250=35.2%, 500=10.8%, 750=1.7%, 1000=0.5%, >=2000=0.1%
fio: (groupid=0): err= 0: pid=28333
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.9%, 2=3.1%, 4=29.6%, 8=66.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.0%, 4=0.1%, 10=1.2%, 20=2.6%, 50=13.2%, 100=21.9%
     lat (msec): 250=54.6%, 500=4.8%, 750=0.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=28334
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.7%, 2=2.9%, 4=36.7%, 8=59.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.9%, 4=0.1%, 10=1.0%, 20=3.1%, 50=15.3%, 100=26.5%
     lat (msec): 250=47.8%, 500=5.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3016/2493, merge=450/181, ticks=51928/96056, in_queue=147984, util=98.94%
0.24user 0.36system 0:26.70elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2509minor)pagefaults 0swaps