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] [ 11023/  5383 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [10.0% done] [  5320/ 11590 kb/s] [eta 00m:36s]
Threads: 3: [mmm] [12.2% done] [  8101/  6679 kb/s] [eta 00m:36s]
Threads: 3: [mmm] [15.0% done] [ 12847/  2402 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [17.9% done] [ 10346/  3540 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [20.5% done] [ 10216/  1949 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [23.7% done] [ 10771/  2189 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [27.8% done] [  5758/  6734 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [29.7% done] [  7817/  6151 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [31.6% done] [  6092/  5789 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.1% done] [  4013/  8585 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [38.9% done] [  6793/  4056 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [40.5% done] [  8794/   795 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [43.2% done] [  8522/  1984 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [44.7% done] [  6285/  4403 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [47.4% done] [  3950/  5470 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [50.0% done] [  4304/  4395 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [51.3% done] [  4214/  3820 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [52.5% done] [  6624/   953 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [54.8% done] [  3308/  6218 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [57.1% done] [  4596/  2942 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=29457, got signal=6
Threads: 2: [m_m] [56.8% done] [  4663/  1373 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=29458, got signal=6
Threads: 1: [m__] [60.5% done] [  6388/     0 kb/s] [eta 00m:17s]
Threads: 1: [m__] [65.9% done] [  3680/  5188 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=29456, got signal=6

fio: (groupid=0): err= 0: pid=29456
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=3.0%, 4=38.2%, 8=58.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.8%, 4=0.0%, 10=0.6%, 20=6.6%, 50=26.3%, 100=13.2%
     lat (msec): 250=38.3%, 500=12.2%, 750=1.0%, 1000=0.5%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=29457
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=2.5%, 4=33.5%, 8=63.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.8%, 4=0.0%, 10=0.4%, 20=3.6%, 50=13.5%, 100=25.2%
     lat (msec): 250=53.0%, 500=3.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=29458
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=2.4%, 4=29.5%, 8=67.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.1%, 10=0.6%, 20=2.9%, 50=10.4%, 100=26.1%
     lat (msec): 250=53.2%, 500=5.5%, 750=0.4%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  sda: ios=3449/2207, merge=549/142, ticks=58616/115424, in_queue=174040, util=98.84%
0.28user 0.43system 0:27.85elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2487minor)pagefaults 0swaps