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] [10.3% done] [  9372/  7724 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [12.9% done] [ 15516/   196 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [15.6% done] [  4348/ 12051 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [19.4% done] [  7339/  8071 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [22.6% done] [  6104/  8540 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [25.8% done] [ 10804/  1744 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [28.1% done] [  8460/  2916 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [30.3% done] [  6360/  6636 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [33.3% done] [  7920/  4272 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [36.4% done] [ 11972/   480 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [38.2% done] [  6420/  6848 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [41.2% done] [  9212/  2176 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [42.9% done] [  5540/  5432 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [45.7% done] [  7272/  4208 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [48.6% done] [  5768/  4180 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [50.0% done] [  6320/  2380 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [51.4% done] [  4584/  4796 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [52.6% done] [  6136/  1948 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [53.8% done] [  4696/  2780 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [55.0% done] [  5580/  1772 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [57.5% done] [  4248/  4248 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [58.5% done] [  2370/  5205 kb/s] [eta 00m:17s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3545, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 2: [m_m] [59.5% done] [  1432/  5552 kb/s] [eta 00m:17s]
fio: pid=3546, got signal=6
Threads: 1: [m__] [66.7% done] [     8/  8732 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3544, got signal=6

fio: (groupid=0): err= 0: pid=3544
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=1.0%, 2=4.8%, 4=36.1%, 8=58.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.5%, 4=0.1%, 10=2.6%, 20=5.6%, 50=22.8%, 100=16.0%
     lat (msec): 250=38.3%, 500=11.4%, 750=1.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3545
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=4.0%, 4=32.7%, 8=62.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.1%, 10=0.6%, 20=5.1%, 50=13.1%, 100=25.5%
     lat (msec): 250=49.8%, 500=4.2%, 750=0.5%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3546
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=2.0%, 4=25.7%, 8=71.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.1%, 10=0.8%, 20=2.1%, 50=10.2%, 100=25.0%
     lat (msec): 250=55.1%, 500=5.8%, 750=0.1%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3250/2459, merge=480/215, ticks=57072/82932, in_queue=140004, util=99.07%
0.26user 0.38system 0:27.52elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2492minor)pagefaults 0swaps