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] [8.8% done] [  8006/  5206 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [12.1% done] [  6447/  7585 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [15.2% done] [  6703/  6526 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [17.1% done] [  9664/  1980 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [20.0% done] [  5817/  5948 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [22.2% done] [  6617/  4491 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [25.0% done] [  9447/  2141 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [27.0% done] [  4598/  7294 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [29.7% done] [  6056/  3677 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [31.6% done] [  6660/  3400 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [33.3% done] [  4928/  5056 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.9% done] [  5720/  3760 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [38.5% done] [  5486/  5335 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [40.0% done] [  6336/  3400 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [42.5% done] [  6832/  1416 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [43.9% done] [  7380/   440 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [45.2% done] [  3632/  4184 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.6% done] [  3480/  4456 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [48.8% done] [  1192/  6520 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [50.0% done] [  3288/  3088 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [52.3% done] [  5616/  1700 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [53.3% done] [  2824/  2980 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [54.3% done] [  3500/  3548 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [54.2% done] [  4728/  3168 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [55.1% done] [  3132/  3748 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [55.8% done] [  2056/  5192 kb/s] [eta 00m:23s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=6395, got signal=6
Threads: 2: [_mm] [58.8% done] [  3228/  3248 kb/s] [eta 00m:21s]
Threads: 2: [_mm] [59.6% done] [   308/  6133 kb/s] [eta 00m:21s]
Threads: 2: [_mm] [60.4% done] [  6612/     0 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=6396, got signal=6
Threads: 1: [__m] [63.5% done] [  6512/     0 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=6397, got signal=6

fio: (groupid=0): err= 0: pid=6395
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.6%, 4=21.3%, 8=76.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.1%, 10=0.8%, 20=5.0%, 50=18.4%, 100=8.3%
     lat (msec): 250=61.5%, 500=4.9%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=6396
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=1.9%, 4=17.0%, 8=80.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.0%, 10=0.8%, 20=2.0%, 50=19.5%, 100=5.6%
     lat (msec): 250=63.0%, 500=7.4%, 750=0.8%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=6397
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.6%, 4=17.4%, 8=81.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.0%, 10=0.2%, 20=1.8%, 50=21.7%, 100=6.9%
     lat (msec): 250=60.7%, 500=6.6%, 750=1.0%, 1000=0.6%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3405/2317, merge=461/339, ticks=72924/39368, in_queue=112292, util=99.15%
0.10user 0.26system 0:34.32elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2519minor)pagefaults 0swaps