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] [10.0% done] [ 14404/  2268 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [12.1% done] [  1488/ 15712 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [16.1% done] [  9732/  4884 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [17.6% done] [  6472/  8480 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [21.9% done] [  9592/  2180 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [24.2% done] [ 12152/  1608 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [28.1% done] [  7815/  5365 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [31.2% done] [  7660/  5720 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [34.4% done] [  7060/  4076 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [36.4% done] [  7220/  5484 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [39.4% done] [  7256/  5212 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [43.8% done] [  6817/  4645 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [45.5% done] [  7280/  4384 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [47.1% done] [  7388/  3116 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [47.2% done] [  4624/  7575 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [48.6% done] [  3956/  5096 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [50.0% done] [  6028/  2904 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [52.6% done] [  6012/  4012 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [53.8% done] [  4316/  4356 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [55.0% done] [  3828/  3460 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [56.1% done] [  5536/  1160 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] [57.1% done] [  3964/  2532 kb/s] [eta 00m:18s]
fio: pid=30752, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=30753, got signal=6
Threads: 1: [m__] [61.0% done] [  4904/   820 kb/s] [eta 00m:16s]
Threads: 1: [m__] [65.0% done] [  7628/     0 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=30751, got signal=6

fio: (groupid=0): err= 0: pid=30751
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.0%, 4=34.4%, 8=63.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.2%, 10=0.3%, 20=2.9%, 50=32.3%, 100=10.8%
     lat (msec): 250=39.6%, 500=11.7%, 750=1.2%, 1000=0.2%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=30752
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.9%, 2=3.7%, 4=34.9%, 8=60.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.1%, 10=1.0%, 20=3.5%, 50=15.9%, 100=22.7%
     lat (msec): 250=51.7%, 500=3.3%, 750=0.1%, 1000=0.0%, >=2000=0.5%
fio: (groupid=0): err= 0: pid=30753
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=3.1%, 4=30.5%, 8=65.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.1%, 10=1.3%, 20=3.0%, 50=11.3%, 100=28.0%
     lat (msec): 250=52.1%, 500=3.1%, 750=0.2%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3531/2233, merge=633/232, ticks=61452/39360, in_queue=100812, util=99.01%
0.20user 0.38system 0:27.54elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2490minor)pagefaults 0swaps