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: [mmF] [23.1% done] [   463/     0 kb/s] [eta 00m:10s]
Threads: 3: [mmF] [23.5% done] [   463/     0 kb/s] [eta 00m:13s]
Threads: 3: [mmF] [22.7% done] [   410/   312 kb/s] [eta 00m:17s]
Threads: 3: [mmF] [23.1% done] [   446/   247 kb/s] [eta 00m:20s]
Threads: 3: [mmF] [23.3% done] [   276/     0 kb/s] [eta 00m:23s]
Threads: 3: [mmV] [25.0% done] [  2909/ 11345 kb/s] [eta 00m:24s]
Threads: 3: [mmV] [25.0% done] [ 12722/     0 kb/s] [eta 00m:27s]
Threads: 3: [mmV] [33.3% done] [ 24649/ 44357 kb/s] [eta 00m:20s]
Threads: 3: [mFV] [55.0% done] [ 14830/ 52971 kb/s] [eta 00m:09s]
Threads: 3: [mFV] [54.5% done] [   690/     0 kb/s] [eta 00m:10s]
Threads: 3: [mFV] [56.5% done] [   288/     0 kb/s] [eta 00m:10s]
Threads: 3: [mFV] [56.0% done] [   312/    36 kb/s] [eta 00m:11s]
Threads: 3: [mFV] [55.6% done] [  2048/   422 kb/s] [eta 00m:12s]
Threads: 3: [mVV] [57.1% done] [  9220/     0 kb/s] [eta 00m:12s]
Threads: 3: [mVV] [56.7% done] [ 27070/   186 kb/s] [eta 00m:13s]
Threads: 3: [mVV] [58.1% done] [ 26457/     0 kb/s] [eta 00m:13s]
Threads: 2: [mV_] [57.6% done] [ 29559/    84 kb/s] [eta 00m:14s]
Threads: 2: [mV_] [58.8% done] [ 27856/     0 kb/s] [eta 00m:14s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1278, got signal=6

fio: (groupid=0): err= 0: pid=1278
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.7%, 2=80.1%, 4=8.1%, 8=11.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=73.1%, 4=8.4%, 10=3.5%, 20=0.6%, 50=1.8%, 100=0.4%
     lat (msec): 250=2.7%, 500=3.7%, 750=2.5%, 1000=0.7%, >=2000=1.0%
fio: (groupid=0): err= 0: pid=1279
  read : io=100MiB, bw=4,951KiB/s, runt= 21105msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max= 2856, avg=62.21, stdev=266.47
    bw (KiB/s) : min=   15, max=40196, per=80.81%, avg=8414.75, stdev=12179.31
  write: io=96,832KiB, bw=6,152KiB/s, runt= 16116msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max= 1810, avg= 5.81, stdev=82.48
    bw (KiB/s) : min=    0, max= 6881, per=16.11%, avg=2909.00, stdev=3416.37
  cpu          : usr=4.87%, sys=2.10%, ctx=7182
  IO depths    : 1=1.3%, 2=54.9%, 4=30.7%, 8=13.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=45.7%, 4=4.2%, 10=18.5%, 20=17.5%, 50=7.8%, 100=1.4%
     lat (msec): 250=2.6%, 500=0.4%, 750=0.7%, 1000=0.2%, >=2000=0.4%
fio: (groupid=0): err= 0: pid=1280
  read : io=100MiB, bw=5,651KiB/s, runt= 18554msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max= 2678, avg=52.35, stdev=191.37
    bw (KiB/s) : min=    4, max=26599, per=101.59%, avg=10578.53, stdev=9545.44
  write: io=95,188KiB, bw=12,111KiB/s, runt=  8048msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  214, avg= 0.70, stdev= 9.43
    bw (KiB/s) : min=    0, max=125046, per=346.23%, avg=62523.00, stdev=88420.87
  cpu          : usr=4.27%, sys=2.37%, ctx=6804
  IO depths    : 1=0.7%, 2=52.4%, 4=30.0%, 8=16.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=49.3%, 4=3.3%, 10=9.9%, 20=19.4%, 50=7.8%, 100=6.1%
     lat (msec): 250=2.9%, 500=0.3%, 750=0.1%, 1000=0.1%, >=2000=0.6%

Run status group 0 (all jobs):
   READ: io=210MiB, aggrb=10,413KiB/s, minb=0KiB/s, maxb=5,651KiB/s, mint=18554msec, maxt=21105msec
  WRITE: io=278MiB, aggrb=18,058KiB/s, minb=0KiB/s, maxb=12,111KiB/s, mint=18554msec, maxt=21105msec

Disk stats (read/write):
  sda: ios=2480/2196, merge=828/65495, ticks=73012/1615992, in_queue=1689004, util=98.16%
2.80user 1.21system 0:21.54elapsed 18%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2479minor)pagefaults 0swaps