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: [mFm] [5.0% done] [  2596/   584 kb/s] [eta 00m:57s]
Threads: 3: [mFm] [6.7% done] [  2676/ 27528 kb/s] [eta 00m:56s]
Threads: 3: [FFm] [8.3% done] [  1457/ 57051 kb/s] [eta 00m:55s]
Threads: 3: [FFm] [10.0% done] [  1360/     0 kb/s] [eta 00m:54s]
Threads: 3: [FFm] [12.7% done] [  1252/  6704 kb/s] [eta 00m:48s]
Threads: 3: [FFm] [14.0% done] [  1240/   812 kb/s] [eta 00m:49s]
Threads: 3: [FFm] [15.0% done] [  1144/     0 kb/s] [eta 00m:51s]
Threads: 3: [FFm] [16.7% done] [  1628/     0 kb/s] [eta 00m:50s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=20416, got signal=6
Threads: 2: [_Vm] [18.3% done] [ 14448/     0 kb/s] [eta 00m:49s]
Threads: 2: [_Vm] [20.0% done] [ 34652/     0 kb/s] [eta 00m:48s]
Threads: 2: [_Vm] [21.7% done] [ 29496/   236 kb/s] [eta 00m:47s]
Threads: 1: [__m] [37.8% done] [ 28232/ 28028 kb/s] [eta 00m:23s]
Threads: 1: [__F] [100.0% done] [     0/ 44932 kb/s] [eta 00m:00s]
Threads: 1: [__F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__V] [75.0% done] [  9388/     0 kb/s] [eta 00m:06s]
Threads: 1: [__V] [95.0% done] [ 28680/     0 kb/s] [eta 00m:01s]
Threads: 1: [__V] [100.0% done] [ 33500/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=20416
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=95.7%, 4=1.1%, 8=2.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=95.9%, 4=0.2%, 10=0.0%, 20=0.0%, 50=0.0%, 100=0.2%
     lat (msec): 250=0.7%, 500=0.7%, 750=1.2%, 1000=0.8%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=20417
  read : io=100MiB, bw=7,427KiB/s, runt= 14118msec
    clat (msec): min=    0, max=  237, avg=13.55, stdev=17.00
    bw (KiB/s) : min=    8, max=39838, per=274.24%, avg=28002.14, stdev=13893.43
  write: io=100MiB, bw=9,683KiB/s, runt= 10828msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=    8, avg= 0.22, stdev= 0.73
    bw (KiB/s) : min=    0, max=138100, per=425.11%, avg=69050.00, stdev=97651.45
  cpu          : usr=5.50%, sys=2.86%, ctx=4141
  IO depths    : 1=1.7%, 2=57.3%, 4=31.2%, 8=9.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=51.2%, 4=0.3%, 10=23.1%, 20=15.9%, 50=8.3%, 100=0.6%
     lat (msec): 250=0.4%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=20418
  read : io=100MiB, bw=4,974KiB/s, runt= 21078msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max= 1423, avg=74.50, stdev=197.58
    bw (KiB/s) : min=   45, max=37871, per=56.49%, avg=5768.52, stdev=10516.40
  write: io=82,376KiB, bw=4,748KiB/s, runt= 17764msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  951, avg= 8.53, stdev=64.38
    bw (KiB/s) : min=    0, max=130539, per=120.79%, avg=19620.29, stdev=48954.34
  cpu          : usr=3.04%, sys=1.48%, ctx=5228
  IO depths    : 1=1.3%, 2=53.0%, 4=30.3%, 8=15.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=47.8%, 4=0.1%, 10=18.8%, 20=18.3%, 50=7.1%, 100=0.6%
     lat (msec): 250=1.8%, 500=1.6%, 750=2.3%, 1000=1.2%, >=2000=0.3%

Run status group 0 (all jobs):
   READ: io=205MiB, aggrb=10,211KiB/s, minb=0KiB/s, maxb=7,427KiB/s, mint=14118msec, maxt=21078msec
  WRITE: io=275MiB, aggrb=16,243KiB/s, minb=0KiB/s, maxb=9,683KiB/s, mint=14118msec, maxt=21078msec

Disk stats (read/write):
  sda: ios=2401/1633, merge=705/68571, ticks=49796/1602192, in_queue=1677560, util=95.58%
2.24user 1.06system 0:21.46elapsed 15%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2480minor)pagefaults 0swaps