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: [mFF] [50.0% done] [  1044/ 10328 kb/s] [eta 00m:03s]
Threads: 3: [mFF] [66.7% done] [   460/ 22104 kb/s] [eta 00m:02s]
Threads: 3: [mFF] [71.4% done] [   476/  7636 kb/s] [eta 00m:02s]
Threads: 3: [mFF] [66.7% done] [   556/     0 kb/s] [eta 00m:03s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=8250, got signal=6
Threads: 2: [_FF] [100.0% done] [   280/  2008 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [_VE] [68.2% done] [     0/     0 kb/s] [eta 00m:07s]
Threads: 1: [_V_] [88.9% done] [ 33272/     0 kb/s] [eta 00m:02s]
Threads: 1: [_V_] [100.0% done] [ 36880/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=8250
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=86.3%, 4=4.0%, 8=9.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=86.5%, 4=0.4%, 10=0.7%, 20=0.1%, 50=0.8%, 100=3.4%
     lat (msec): 250=3.8%, 500=3.2%, 750=0.6%, 1000=0.4%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=8251
  read : io=100MiB, bw=5,726KiB/s, runt= 18310msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  459, avg=17.28, stdev=35.84
    bw (KiB/s) : min=   14, max=37985, per=302.50%, avg=19641.11, stdev=17302.71
  write: io=98,428KiB, bw=6,582KiB/s, runt= 15312msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  103, avg= 0.56, stdev= 4.67
    bw (KiB/s) : min=    0, max=33536, per=86.62%, avg=16768.00, stdev=23713.53
  cpu          : usr=4.57%, sys=2.38%, ctx=4695
  IO depths    : 1=1.6%, 2=56.2%, 4=31.3%, 8=10.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=49.0%, 4=1.2%, 10=24.9%, 20=16.4%, 50=5.9%, 100=0.9%
     lat (msec): 250=1.4%, 500=0.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=8252
  read : io=0KiB, bw=0KiB/s, runt= 15347msec
  write: io=100MiB, bw=6,849KiB/s, runt= 15308msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=    3, avg= 0.19, stdev= 0.41
    bw (KiB/s) : min=    0, max=127295, per=328.77%, avg=63647.50, stdev=90011.16
  cpu          : usr=5.40%, sys=2.03%, ctx=3281
  IO depths    : 1=0.2%, 2=98.7%, 4=1.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=99.1%, 4=0.4%, 10=0.0%, 20=0.0%, 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=113MiB, aggrb=6,493KiB/s, minb=0KiB/s, maxb=5,726KiB/s, mint=15347msec, maxt=18310msec
  WRITE: io=283MiB, aggrb=19,359KiB/s, minb=0KiB/s, maxb=6,849KiB/s, mint=15347msec, maxt=18310msec

Disk stats (read/write):
  sda: ios=1335/2631, merge=345/69533, ticks=17960/1987836, in_queue=2010560, util=98.10%
2.37user 1.03system 0:18.64elapsed 18%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2466minor)pagefaults 0swaps