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] [9.1% done] [ 11424/  5988 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [10.8% done] [  3760/ 13280 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [13.5% done] [  9324/  6660 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [16.2% done] [  9364/  5016 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [18.9% done] [ 13928/     0 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [20.5% done] [  2748/  7612 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [22.5% done] [ 10128/  1496 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [25.0% done] [ 10776/  1964 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [27.5% done] [  7960/  5072 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [29.3% done] [  6116/  5788 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [33.3% done] [  4920/  6832 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [36.8% done] [  1656/ 10384 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [39.5% done] [  5260/  5928 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [41.0% done] [  5528/  5608 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [43.6% done] [  6608/  2852 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [46.2% done] [  3704/  6200 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [47.5% done] [  2432/  6584 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [48.8% done] [  7456/     0 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [50.0% done] [  4008/  5112 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [53.7% done] [  4688/  2580 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [56.1% done] [  3700/  4456 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [55.8% done] [  3124/  3264 kb/s] [eta 00m:19s]
fio: pid=20632, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=20633, got signal=6
Threads: 1: [m__] [59.5% done] [  5576/  2268 kb/s] [eta 00m:17s]
Threads: 1: [m__] [65.0% done] [  7768/     0 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 1: [m__] [67.5% done] [  3695/     0 kb/s] [eta 00m:13s]
fio: pid=20631, got signal=6

fio: (groupid=0): err= 0: pid=20631
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=2.3%, 4=32.1%, 8=65.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.1%, 10=0.5%, 20=4.4%, 50=33.6%, 100=14.7%
     lat (msec): 250=31.5%, 500=12.6%, 750=1.8%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=20632
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.8%, 4=28.5%, 8=69.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.8%, 4=0.3%, 10=0.9%, 20=4.2%, 50=13.7%, 100=23.5%
     lat (msec): 250=50.9%, 500=5.2%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=20633
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=1.7%, 4=31.3%, 8=66.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.2%, 10=1.5%, 20=3.1%, 50=10.5%, 100=28.3%
     lat (msec): 250=51.0%, 500=3.7%, 750=0.7%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3302/2527, merge=440/223, ticks=52988/85656, in_queue=138640, util=97.24%
0.26user 0.39system 0:28.17elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2497minor)pagefaults 0swaps