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: [FmF] [5.7% done] [   681/   697 kb/s] [eta 00m:50s]
Threads: 3: [FmF] [7.7% done] [  3008/     0 kb/s] [eta 00m:48s]
Threads: 3: [FmF] [26.3% done] [  1713/ 26182 kb/s] [eta 00m:14s]
Threads: 3: [FmF] [27.3% done] [  1087/     0 kb/s] [eta 00m:16s]
Threads: 3: [FmF] [30.4% done] [  1787/  3127 kb/s] [eta 00m:16s]
Threads: 3: [FmF] [66.7% done] [   232/ 53212 kb/s] [eta 00m:04s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=13407, got signal=6
Threads: 2: [F_F] [100.0% done] [  1843/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [F_F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__V] [82.4% done] [ 21539/     0 kb/s] [eta 00m:03s]
Threads: 1: [__V] [100.0% done] [ 32504/     0 kb/s] [eta 00m:00s]
Threads: 1: [__V] [100.0% done] [ 33732/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=13406
  read : io=0KiB, bw=0KiB/s, runt= 13642msec
  write: io=100MiB, bw=7,707KiB/s, runt= 13604msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=    2, avg= 0.17, stdev= 0.38
    bw (KiB/s) : min=    0, max=135110, per=317.91%, avg=67555.00, stdev=95537.20
  cpu          : usr=5.75%, sys=2.35%, ctx=3044
  IO depths    : 1=0.2%, 2=98.8%, 4=0.9%, 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%
fio: (groupid=0): err= 0: pid=13407
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=83.4%, 4=5.5%, 8=10.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=83.7%, 4=0.7%, 10=0.7%, 20=0.5%, 50=1.0%, 100=1.8%
     lat (msec): 250=4.5%, 500=3.9%, 750=1.8%, 1000=0.9%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=13408
  read : io=100MiB, bw=6,197KiB/s, runt= 16920msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  223, avg=19.26, stdev=34.08
    bw (KiB/s) : min=    2, max=39559, per=301.19%, avg=21899.33, stdev=15429.06
  write: io=95,488KiB, bw=7,185KiB/s, runt= 13608msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  115, avg= 0.35, stdev= 3.84
    bw (KiB/s) : min=    0, max=135503, per=318.83%, avg=67751.50, stdev=95815.09
  cpu          : usr=4.18%, sys=2.55%, ctx=4210
  IO depths    : 1=3.8%, 2=58.6%, 4=28.3%, 8=9.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=50.8%, 4=0.2%, 10=21.9%, 20=17.8%, 50=5.8%, 100=0.9%
     lat (msec): 250=2.4%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=117MiB, aggrb=7,271KiB/s, minb=0KiB/s, maxb=6,197KiB/s, mint=16920msec, maxt=16920msec
  WRITE: io=276MiB, aggrb=21,250KiB/s, minb=0KiB/s, maxb=7,707KiB/s, mint=16920msec, maxt=16920msec

Disk stats (read/write):
  sda: ios=1522/1911, merge=445/68472, ticks=31512/1691724, in_queue=1725288, util=94.36%
2.17user 1.05system 0:17.31elapsed 18%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2461minor)pagefaults 0swaps