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] [ 13893/  1987 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [11.8% done] [ 11190/  6261 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [15.6% done] [  7431/  9681 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [17.6% done] [ 13260/  1024 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [20.0% done] [  6880/  6320 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [23.5% done] [  9132/  5164 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [25.7% done] [  3418/ 10558 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [27.0% done] [  6814/  5973 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [28.2% done] [  8212/  3584 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [30.0% done] [  9873/  1543 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [32.5% done] [  5184/  6912 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [33.3% done] [  7288/  4160 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [35.7% done] [  8116/  2488 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [39.0% done] [  8732/  2352 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [41.5% done] [  4437/  5818 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [43.9% done] [  5879/  3787 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [44.2% done] [   873/  8232 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [47.6% done] [  3271/  6948 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [48.8% done] [  3401/  4165 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [51.2% done] [  6172/  2677 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21692, got signal=6
Threads: 2: [m_m] [53.5% done] [  3262/  4827 kb/s] [eta 00m:20s]
Threads: 2: [m_m] [58.5% done] [  3462/  5201 kb/s] [eta 00m:17s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 2: [m_m] [61.0% done] [  4648/  2604 kb/s] [eta 00m:16s]
fio: pid=21693, got signal=6
Threads: 1: [m__] [66.7% done] [  3608/  4516 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=21691, got signal=6

fio: (groupid=0): err= 0: pid=21691
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=3.0%, 4=34.8%, 8=61.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.7%, 10=1.5%, 20=6.8%, 50=26.7%, 100=18.5%
     lat (msec): 250=29.9%, 500=12.3%, 750=2.5%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=21692
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=1.5%, 4=27.8%, 8=70.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.1%, 10=0.6%, 20=2.4%, 50=15.9%, 100=26.0%
     lat (msec): 250=50.2%, 500=4.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=21693
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=3.7%, 4=34.1%, 8=61.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.2%, 10=1.9%, 20=3.0%, 50=12.5%, 100=28.1%
     lat (msec): 250=47.3%, 500=5.5%, 750=0.4%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3152/2561, merge=571/263, ticks=57444/70992, in_queue=128432, util=99.10%
0.23user 0.31system 0:27.03elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2507minor)pagefaults 0swaps