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: [mFm] [33.3% done] [  5588/ 43624 kb/s] [eta 00m:06s]
Threads: 3: [mFm] [36.4% done] [ 10084/     0 kb/s] [eta 00m:07s]
Threads: 3: [mFF] [35.7% done] [  1288/ 41344 kb/s] [eta 00m:09s]
Threads: 3: [mFF] [37.5% done] [  1228/     0 kb/s] [eta 00m:10s]
Threads: 3: [mFF] [38.9% done] [  1180/   228 kb/s] [eta 00m:11s]
Threads: 3: [mFF] [38.1% done] [  1304/     0 kb/s] [eta 00m:13s]
Threads: 3: [mFF] [39.1% done] [   612/   508 kb/s] [eta 00m:14s]
Threads: 3: [mFF] [40.0% done] [   276/     0 kb/s] [eta 00m:15s]
Threads: 3: [mFF] [61.1% done] [  1600/ 29176 kb/s] [eta 00m:07s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13938, got signal=6
Threads: 2: [m_F] [63.2% done] [   572/  4280 kb/s] [eta 00m:07s]
Threads: 2: [m_F] [65.0% done] [   908/     0 kb/s] [eta 00m:07s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13937, got signal=6
Threads: 1: [__F] [100.0% done] [   984/  5244 kb/s] [eta 00m:00s]
Threads: 1: [__F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__V] [77.3% done] [ 11964/     0 kb/s] [eta 00m:05s]
Threads: 1: [__V] [94.7% done] [ 29176/     0 kb/s] [eta 00m:01s]
Threads: 1: [__V] [100.0% done] [ 12008/     0 kb/s] [eta 00m:00s]
Threads: 1: [__V] [100.0% done] [ 30760/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=13937
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=75.5%, 4=4.6%, 8=19.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=76.0%, 4=0.1%, 10=0.1%, 20=0.1%, 50=0.4%, 100=3.7%
     lat (msec): 250=9.9%, 500=6.0%, 750=2.3%, 1000=1.1%, >=2000=0.2%
fio: (groupid=0): err= 0: pid=13938
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=98.0%, 4=1.7%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=98.8%, 4=0.7%, 10=0.1%, 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%
fio: (groupid=0): err= 0: pid=13939
  read : io=100MiB, bw=5,091KiB/s, runt= 20585msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  525, avg=35.14, stdev=60.01
    bw (KiB/s) : min=    0, max=34676, per=183.84%, avg=11811.44, stdev=12070.02
  write: io=84,968KiB, bw=5,202KiB/s, runt= 16724msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  170, avg= 0.89, stdev= 7.94
    bw (KiB/s) : min=    0, max=23010, per=71.47%, avg=11505.00, stdev=16270.53
  cpu          : usr=3.11%, sys=1.88%, ctx=6894
  IO depths    : 1=1.1%, 2=51.2%, 4=31.2%, 8=16.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=46.4%, 4=0.2%, 10=17.9%, 20=19.8%, 50=6.2%, 100=2.5%
     lat (msec): 250=5.9%, 500=0.7%, 750=0.1%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=126MiB, aggrb=6,425KiB/s, minb=0KiB/s, maxb=5,091KiB/s, mint=20585msec, maxt=20585msec
  WRITE: io=257MiB, aggrb=16,097KiB/s, minb=0KiB/s, maxb=5,202KiB/s, mint=20585msec, maxt=20585msec

Disk stats (read/write):
  sda: ios=1872/2725, merge=616/62847, ticks=39532/2275632, in_queue=2317004, util=98.54%
2.06user 1.06system 0:20.98elapsed 14%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2493minor)pagefaults 0swaps