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] [  9208/  3620 kb/s] [eta 00m:36s]
Threads: 3: [mmm] [11.1% done] [  5952/  8164 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [14.7% done] [  2192/ 11504 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [17.6% done] [  9344/  3396 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [20.0% done] [  8224/  3468 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [21.6% done] [  4748/  8764 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [24.3% done] [  6426/  4332 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [27.0% done] [  7784/  3008 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [29.7% done] [  5896/  5356 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [31.6% done] [  5284/  4616 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [33.3% done] [  6432/  3144 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.9% done] [  6192/  2956 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [37.5% done] [  8344/  3464 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [40.0% done] [  4124/  4640 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [42.5% done] [  3152/  6756 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [43.9% done] [  3707/  5521 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.3% done] [  4260/  4164 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.6% done] [  6298/  1561 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [50.0% done] [  7340/   548 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [51.2% done] [  4872/  2060 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [52.3% done] [  5480/  1264 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [54.5% done] [  3960/  2428 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [55.6% done] [  1944/  5256 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [56.5% done] [  2520/  4948 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [57.4% done] [  5956/   820 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=31087, got signal=6
Threads: 2: [_mm] [57.1% done] [  5396/   568 kb/s] [eta 00m:21s]
Threads: 2: [_mm] [59.2% done] [  3620/  3488 kb/s] [eta 00m:20s]
Threads: 2: [_mm] [60.0% done] [  5608/  1940 kb/s] [eta 00m:20s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=31088, got signal=6
Threads: 1: [__m] [62.0% done] [  5352/     0 kb/s] [eta 00m:19s]
Threads: 1: [__m] [66.7% done] [  7916/     0 kb/s] [eta 00m:16s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=31089, got signal=6

fio: (groupid=0): err= 0: pid=31087
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.2%, 4=19.0%, 8=79.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.0%, 10=0.7%, 20=1.7%, 50=21.0%, 100=8.9%
     lat (msec): 250=62.7%, 500=4.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=31088
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=1.3%, 4=17.4%, 8=80.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.0%, 10=1.2%, 20=2.0%, 50=20.8%, 100=4.4%
     lat (msec): 250=61.0%, 500=8.7%, 750=0.7%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=31089
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.4%, 4=15.8%, 8=83.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.2%, 20=1.7%, 50=23.0%, 100=3.2%
     lat (msec): 250=60.6%, 500=9.3%, 750=0.9%, 1000=0.8%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3419/2108, merge=555/310, ticks=72128/39972, in_queue=112100, util=99.30%
0.10user 0.28system 0:33.20elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2513minor)pagefaults 0swaps