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: [FmF] [60.0% done] [   954/ 24409 kb/s] [eta 00m:02s]
Threads: 3: [FFF] [100.0% done] [     0/ 20174 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=26226, got signal=6
Threads: 2: [VV_] [69.6% done] [ 12092/     0 kb/s] [eta 00m:07s]
Threads: 2: [VV_] [73.9% done] [ 29167/     0 kb/s] [eta 00m:06s]
Threads: 2: [VV_] [90.0% done] [ 27912/     0 kb/s] [eta 00m:02s]
Threads: 2: [VV_] [95.0% done] [ 35157/     0 kb/s] [eta 00m:01s]
Threads: 2: [VV_] [100.0% done] [ 31637/     0 kb/s] [eta 00m:00s]
Threads: 2: [VV_] [100.0% done] [ 34872/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=26224
  read : io=100MiB, bw=4,807KiB/s, runt= 21813msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  535, avg=32.72, stdev=61.93
    bw (KiB/s) : min=    6, max=21692, per=134.75%, avg=12954.86, stdev=7550.37
  write: io=91,688KiB, bw=6,027KiB/s, runt= 15576msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  243, avg= 0.86, stdev=11.94
    bw (KiB/s) : min=    0, max=139993, per=366.36%, avg=69996.50, stdev=98990.00
  cpu          : usr=3.10%, sys=1.93%, ctx=7472
  IO depths    : 1=0.9%, 2=52.9%, 4=31.6%, 8=14.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=49.5%, 4=4.3%, 10=16.1%, 20=18.1%, 50=3.9%, 100=2.0%
     lat (msec): 250=5.0%, 500=1.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=26225
  read : io=100MiB, bw=4,915KiB/s, runt= 21333msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  519, avg=36.37, stdev=69.68
    bw (KiB/s) : min=    7, max=31825, per=113.57%, avg=10918.19, stdev=9926.03
  write: io=96,688KiB, bw=6,353KiB/s, runt= 15584msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  354, avg= 1.15, stdev=14.34
    bw (KiB/s) : min=    0, max=18436, per=48.25%, avg=9218.00, stdev=13036.22
  cpu          : usr=3.79%, sys=2.21%, ctx=7356
  IO depths    : 1=0.7%, 2=51.2%, 4=32.5%, 8=15.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=47.2%, 4=4.7%, 10=11.9%, 20=21.8%, 50=6.8%, 100=1.6%
     lat (msec): 250=4.4%, 500=1.5%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=26226
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=96.2%, 4=3.3%, 8=0.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=95.6%, 4=2.9%, 10=0.9%, 20=0.2%, 50=0.0%, 100=0.0%
     lat (msec): 250=0.0%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=200MiB, aggrb=9,614KiB/s, minb=0KiB/s, maxb=4,915KiB/s, mint=0msec, maxt=21813msec
  WRITE: io=284MiB, aggrb=19,106KiB/s, minb=0KiB/s, maxb=6,353KiB/s, mint=0msec, maxt=21813msec

Disk stats (read/write):
  sda: ios=2144/2885, merge=958/69738, ticks=38916/2049800, in_queue=2088716, util=98.95%
2.38user 1.25system 0:22.07elapsed 16%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2486minor)pagefaults 0swaps