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] [8.6% done] [  6314/ 48183 kb/s] [eta 00m:32s]
Threads: 3: [mmF] [25.0% done] [ 11268/ 17156 kb/s] [eta 00m:12s]
Threads: 3: [mFF] [45.5% done] [  1513/ 67201 kb/s] [eta 00m:06s]
Threads: 3: [mFF] [46.2% done] [   984/     0 kb/s] [eta 00m:07s]
Threads: 3: [mFF] [46.7% done] [   512/     0 kb/s] [eta 00m:08s]
Threads: 3: [FFF] [100.0% done] [   184/ 31118 kb/s] [eta 00m:00s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [FFV] [69.2% done] [     0/     0 kb/s] [eta 00m:04s]
fio: pid=27331, got signal=6
Threads: 2: [FF_] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [VV_] [68.8% done] [ 16928/     0 kb/s] [eta 00m:05s]
Threads: 2: [VV_] [80.0% done] [ 34032/     0 kb/s] [eta 00m:03s]
Threads: 2: [VV_] [92.9% done] [ 39298/     0 kb/s] [eta 00m:01s]
Threads: 2: [VV_] [100.0% done] [ 39810/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=27329
  read : io=100MiB, bw=7,189KiB/s, runt= 14585msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  875, avg=50.03, stdev=108.35
    bw (KiB/s) : min=   25, max=27572, per=66.86%, avg=9200.71, stdev=9418.36
  write: io=79,520KiB, bw=7,607KiB/s, runt= 10704msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  663, avg= 2.47, stdev=30.34
    bw (KiB/s) : min=    0, max=14852, per=29.21%, avg=7426.00, stdev=10501.95
  cpu          : usr=4.39%, sys=2.72%, ctx=4041
  IO depths    : 1=1.7%, 2=53.4%, 4=29.6%, 8=15.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=47.1%, 4=0.3%, 10=21.9%, 20=13.7%, 50=5.6%, 100=1.4%
     lat (msec): 250=7.3%, 500=1.4%, 750=0.8%, 1000=0.2%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=27330
  read : io=100MiB, bw=6,880KiB/s, runt= 15239msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  583, avg=38.67, stdev=72.19
    bw (KiB/s) : min=   28, max=40155, per=75.60%, avg=10402.67, stdev=10737.71
  write: io=83,808KiB, bw=8,019KiB/s, runt= 10701msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  135, avg= 0.76, stdev= 7.28
    bw (KiB/s) : min=    0, max=19704, per=38.76%, avg=9852.00, stdev=13932.83
  cpu          : usr=4.20%, sys=2.81%, ctx=4632
  IO depths    : 1=1.6%, 2=53.8%, 4=29.9%, 8=14.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=47.9%, 4=0.8%, 10=23.3%, 20=15.1%, 50=2.2%, 100=1.0%
     lat (msec): 250=8.5%, 500=1.0%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=27331
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=99.0%, 4=0.7%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=99.6%, 4=0.1%, 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=200MiB, aggrb=13,761KiB/s, minb=0KiB/s, maxb=7,189KiB/s, mint=0msec, maxt=15239msec
  WRITE: io=259MiB, aggrb=25,420KiB/s, minb=0KiB/s, maxb=8,019KiB/s, mint=0msec, maxt=15239msec

Disk stats (read/write):
  sda: ios=2333/771, merge=929/65508, ticks=28704/1206016, in_queue=1280420, util=98.26%
2.16user 1.18system 0:15.54elapsed 21%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2468minor)pagefaults 0swaps