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: [Fmm] [7.3% done] [    60/     0 kb/s] [eta 00m:38s]
Threads: 3: [Fmm] [7.4% done] [   134/     0 kb/s] [eta 00m:50s]
Threads: 3: [Fmm] [8.3% done] [   739/    52 kb/s] [eta 00m:55s]
Threads: 3: [Fmm] [10.0% done] [  1000/     0 kb/s] [eta 00m:54s]
Threads: 3: [Fmm] [11.7% done] [   666/  6164 kb/s] [eta 00m:53s]
Threads: 3: [Vmm] [26.7% done] [  3657/ 26376 kb/s] [eta 00m:22s]
Threads: 3: [Vmm] [28.1% done] [ 21548/     0 kb/s] [eta 00m:23s]
Threads: 3: [Vmm] [27.8% done] [  1740/     0 kb/s] [eta 00m:26s]
Threads: 3: [Vmm] [28.9% done] [ 10662/  1227 kb/s] [eta 00m:27s]
Threads: 3: [VmF] [29.3% done] [  5489/ 22422 kb/s] [eta 00m:29s]
Threads: 3: [VmF] [30.2% done] [  8619/   508 kb/s] [eta 00m:30s]
Threads: 3: [VmV] [42.4% done] [ 19821/ 15965 kb/s] [eta 00m:19s]
Threads: 3: [VFV] [71.4% done] [ 10156/ 39015 kb/s] [eta 00m:06s]
Threads: 3: [VFV] [76.2% done] [  5042/     0 kb/s] [eta 00m:05s]
Threads: 3: [VFV] [73.9% done] [  3280/     0 kb/s] [eta 00m:06s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=3607, got signal=6
Threads: 2: [V_V] [81.8% done] [ 27869/     0 kb/s] [eta 00m:04s]
Threads: 1: [__V] [90.5% done] [ 29382/     0 kb/s] [eta 00m:02s]
Threads: 1: [__V] [100.0% done] [ 37356/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=3606
  read : io=100MiB, bw=5,595KiB/s, runt= 18739msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  914, avg=54.77, stdev=151.25
    bw (KiB/s) : min=   11, max=25886, per=93.51%, avg=10339.82, stdev=8717.19
  write: io=96,388KiB, bw=12,306KiB/s, runt=  8020msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=   98, avg= 0.40, stdev= 4.04
    bw (KiB/s) : min=    0, max=126337, per=305.27%, avg=63168.50, stdev=89333.75
  cpu          : usr=4.38%, sys=1.84%, ctx=6282
  IO depths    : 1=3.0%, 2=59.3%, 4=27.8%, 8=9.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=54.1%, 4=4.5%, 10=10.3%, 20=8.7%, 50=12.7%, 100=5.6%
     lat (msec): 250=2.3%, 500=0.0%, 750=0.3%, 1000=1.5%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=3607
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=86.1%, 4=2.1%, 8=11.4%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=86.0%, 4=0.3%, 10=0.0%, 20=0.2%, 50=0.5%, 100=1.8%
     lat (msec): 250=5.0%, 500=2.5%, 750=0.5%, 1000=0.4%, >=2000=1.7%
fio: (groupid=0): err= 0: pid=3608
  read : io=100MiB, bw=5,020KiB/s, runt= 20886msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max= 3588, avg=84.93, stdev=276.13
    bw (KiB/s) : min=   16, max=36498, per=54.67%, avg=6045.00, stdev=10651.91
  write: io=92,028KiB, bw=7,053KiB/s, runt= 13360msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max= 2755, avg= 3.99, stdev=75.99
    bw (KiB/s) : min=    0, max=13020, per=17.38%, avg=3596.75, stdev=6313.15
  cpu          : usr=3.45%, sys=1.90%, ctx=6997
  IO depths    : 1=2.7%, 2=53.1%, 4=28.9%, 8=15.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=48.6%, 4=5.6%, 10=9.8%, 20=17.1%, 50=7.0%, 100=4.0%
     lat (msec): 250=3.9%, 500=1.6%, 750=0.5%, 1000=0.9%, >=2000=0.7%

Run status group 0 (all jobs):
   READ: io=220MiB, aggrb=11,057KiB/s, minb=0KiB/s, maxb=5,595KiB/s, mint=20886msec, maxt=20886msec
  WRITE: io=264MiB, aggrb=20,693KiB/s, minb=0KiB/s, maxb=12,306KiB/s, mint=20886msec, maxt=20886msec

Disk stats (read/write):
  sda: ios=1572/2272, merge=12/65165, ticks=81972/1532644, in_queue=1615968, util=98.87%
2.24user 1.08system 0:21.27elapsed 15%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2474minor)pagefaults 0swaps