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] [14.3% done] [ 11635/  9128 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [18.2% done] [ 14792/  4632 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [21.7% done] [ 10784/  8704 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [ 10912/  4884 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [29.2% done] [ 12496/  5484 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [ 11112/  4104 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [36.0% done] [  6124/  9668 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.0% done] [  9549/  5729 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [  7640/  7088 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [48.0% done] [  4500/  9064 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [50.0% done] [  9948/  2868 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [  7284/  5236 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.6% done] [  5276/  4900 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.2% done] [  3936/  6796 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [58.6% done] [  4716/  4736 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.0% done] [  7288/     0 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [61.3% done] [  7724/     0 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1629, got signal=6
Threads: 2: [m_m] [62.5% done] [  6732/     0 kb/s] [eta 00m:12s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 2: [m_m] [63.6% done] [  4672/  3200 kb/s] [eta 00m:12s]
fio: pid=1630, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 1: [m__] [66.7% done] [  3072/  3792 kb/s] [eta 00m:11s]
fio: pid=1628, got signal=6

fio: (groupid=0): err= 0: pid=1628
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.8%, 2=3.1%, 4=29.4%, 8=66.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.9%, 4=0.0%, 10=1.6%, 20=2.7%, 50=17.8%, 100=27.4%
     lat (msec): 250=45.5%, 500=3.5%, 750=0.4%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=1629
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=2.7%, 4=35.3%, 8=61.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.2%, 10=1.3%, 20=3.4%, 50=18.2%, 100=37.0%
     lat (msec): 250=36.6%, 500=2.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=1630
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.8%, 4=32.0%, 8=64.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.2%, 10=1.5%, 20=2.0%, 50=17.8%, 100=29.9%
     lat (msec): 250=44.8%, 500=2.8%, 750=0.2%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3153/2269, merge=553/195, ticks=42288/117108, in_queue=159396, util=98.56%
0.35user 0.43system 0:22.99elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2487minor)pagefaults 0swaps