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] [9.1% done] [ 12284/  4372 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [10.0% done] [  7747/ 10061 kb/s] [eta 00m:36s]
Threads: 3: [mmm] [11.9% done] [ 10600/  4716 kb/s] [eta 00m:37s]
Threads: 3: [mmm] [15.0% done] [  7552/  7460 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [18.9% done] [  6748/  7848 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [20.5% done] [  4676/  7020 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [23.1% done] [  5342/  7918 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [25.6% done] [  8932/  4663 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [27.5% done] [  7766/  4544 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [29.3% done] [ 10712/   641 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [31.7% done] [  6943/  3871 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [32.6% done] [  8822/  1374 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [34.9% done] [  3946/  8668 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [38.1% done] [  7219/  3576 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [40.5% done] [  6557/  3926 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [41.9% done] [  7537/   666 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [43.2% done] [  4340/  4320 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [46.5% done] [  2116/  7758 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.7% done] [  4328/  3249 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [50.0% done] [  4903/  1862 kb/s] [eta 00m:22s]
Threads: 3: [mVm] [51.1% done] [ 12933/   401 kb/s] [eta 00m:22s]
Threads: 3: [mVm] [51.1% done] [ 10866/  1681 kb/s] [eta 00m:23s]
Threads: 3: [mVm] [52.1% done] [ 16139/   236 kb/s] [eta 00m:23s]
Threads: 2: [m_V] [52.9% done] [  8207/  4025 kb/s] [eta 00m:24s]
Threads: 2: [m_V] [53.8% done] [ 15535/     0 kb/s] [eta 00m:24s]
Threads: 2: [m_V] [53.7% done] [ 18636/     0 kb/s] [eta 00m:25s]
Threads: 2: [m_V] [54.5% done] [ 16277/  1248 kb/s] [eta 00m:25s]
Threads: 1: [m__] [59.6% done] [  6711/  3493 kb/s] [eta 00m:21s]
Threads: 1: [m__] [65.3% done] [  3678/  4871 kb/s] [eta 00m:17s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13927, got signal=6

fio: (groupid=0): err= 0: pid=13927
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=1.1%, 2=4.7%, 4=37.1%, 8=57.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.4%, 4=0.0%, 10=0.1%, 20=5.4%, 50=32.3%, 100=9.3%
     lat (msec): 250=29.2%, 500=17.9%, 750=1.6%, 1000=1.4%, >=2000=1.0%
fio: (groupid=0): err= 0: pid=13928
  read : io=100MiB, bw=3,979KiB/s, runt= 26286msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  525, avg=80.07, stdev=68.01
    bw (KiB/s) : min=    4, max=19651, per=58.92%, avg=5386.86, stdev=4952.80
  write: io=43,960KiB, bw=2,007KiB/s, runt= 22420msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  535, avg=98.70, stdev=82.43
    bw (KiB/s) : min=    0, max= 8865, per=62.20%, avg=3193.29, stdev=2437.95
  cpu          : usr=0.23%, sys=0.47%, ctx=4944
  IO depths    : 1=0.9%, 2=5.7%, 4=45.6%, 8=47.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.7%, 4=0.1%, 10=0.5%, 20=8.7%, 50=34.8%, 100=18.7%
     lat (msec): 250=33.6%, 500=2.3%, 750=0.3%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13929
  read : io=100MiB, bw=3,473KiB/s, runt= 30138msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    8, max=  791, avg=83.95, stdev=77.65
    bw (KiB/s) : min=   76, max=19772, per=47.70%, avg=4361.29, stdev=5323.15
  write: io=52,552KiB, bw=2,013KiB/s, runt= 26729msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max= 1055, avg=122.94, stdev=132.41
    bw (KiB/s) : min=    0, max= 8743, per=55.24%, avg=2835.83, stdev=2582.60
  cpu          : usr=0.23%, sys=0.44%, ctx=5385
  IO depths    : 1=1.3%, 2=4.8%, 4=44.3%, 8=49.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.0%, 10=1.3%, 20=9.7%, 50=26.0%, 100=22.4%
     lat (msec): 250=35.4%, 500=3.3%, 750=0.8%, 1000=0.3%, >=2000=0.1%

Run status group 0 (all jobs):
   READ: io=263MiB, aggrb=9,143KiB/s, minb=0KiB/s, maxb=3,979KiB/s, mint=26286msec, maxt=30138msec
  WRITE: io=131MiB, aggrb=5,134KiB/s, minb=0KiB/s, maxb=2,013KiB/s, mint=26286msec, maxt=30138msec

Disk stats (read/write):
  sda: ios=4791/2589, merge=766/263, ticks=67404/85620, in_queue=153024, util=98.56%
0.24user 0.49system 0:33.06elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2468minor)pagefaults 0swaps