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] [7.7% done] [ 12382/   452 kb/s] [eta 00m:36s]
Threads: 3: [mmm] [10.3% done] [  6785/  6896 kb/s] [eta 00m:35s]
Threads: 3: [mmm] [14.3% done] [  7576/  5659 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [17.1% done] [ 10068/  2252 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [20.0% done] [  6872/  4540 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [22.9% done] [  5820/  6448 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [24.3% done] [  9096/  2152 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [27.0% done] [  8396/  1472 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [28.9% done] [  9636/   228 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [31.6% done] [  3188/  7152 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [33.3% done] [  3184/  7260 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.9% done] [  6336/  2860 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [37.5% done] [  7928/  1988 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [40.0% done] [  4924/  4520 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [42.5% done] [  4712/  4100 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [43.9% done] [  5880/  3072 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.3% done] [  6116/  3076 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.6% done] [  3876/  4072 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [50.0% done] [  3700/  3868 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [51.2% done] [  4208/  2824 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [52.3% done] [  4592/  2648 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [54.5% done] [  4374/  2673 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [55.6% done] [  6784/    76 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [56.5% done] [  2096/  5720 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [57.4% done] [  5432/  1648 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [58.3% done] [  4484/  2512 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5173, got signal=6
Threads: 2: [_mm] [59.2% done] [  1340/  6484 kb/s] [eta 00m:20s]
Threads: 2: [_mm] [60.8% done] [  6768/   956 kb/s] [eta 00m:20s]
Threads: 2: [_mm] [64.0% done] [  1512/  6712 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5174, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5175, got signal=6

fio: (groupid=0): err= 0: pid=5173
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.3%, 4=19.0%, 8=79.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.8%, 4=0.0%, 10=1.3%, 20=3.0%, 50=17.7%, 100=9.9%
     lat (msec): 250=60.6%, 500=6.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5174
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=2.2%, 4=17.8%, 8=79.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.0%, 10=1.3%, 20=2.9%, 50=16.8%, 100=6.0%
     lat (msec): 250=60.4%, 500=10.8%, 750=0.7%, 1000=0.2%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5175
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.9%, 4=14.5%, 8=84.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=0.2%, 20=1.5%, 50=19.0%, 100=4.5%
     lat (msec): 250=64.9%, 500=8.4%, 750=0.5%, 1000=0.5%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3218/2237, merge=742/251, ticks=76352/35552, in_queue=111904, util=99.19%
0.09user 0.22system 0:34.20elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2512minor)pagefaults 0swaps