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] [9.4% done] [  8464/     0 kb/s] [eta 00m:29s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=25524, got signal=6
Threads: 2: [m_F] [36.4% done] [  2408/ 87648 kb/s] [eta 00m:07s]
Threads: 2: [m_F] [38.5% done] [  1344/   526 kb/s] [eta 00m:08s]
Threads: 2: [m_F] [40.0% done] [   736/     0 kb/s] [eta 00m:09s]
Threads: 2: [m_F] [38.9% done] [   656/     0 kb/s] [eta 00m:11s]
Threads: 2: [m_F] [40.0% done] [   876/     0 kb/s] [eta 00m:12s]
Threads: 2: [m_F] [40.9% done] [  1104/     0 kb/s] [eta 00m:13s]
Threads: 2: [m_F] [52.6% done] [  1004/ 17020 kb/s] [eta 00m:09s]
Threads: 2: [m_F] [52.4% done] [  1160/     0 kb/s] [eta 00m:10s]
Threads: 2: [F_F] [100.0% done] [   888/ 21308 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: [F_E] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [V__] [85.7% done] [ 23920/     0 kb/s] [eta 00m:03s]
Threads: 1: [V__] [100.0% done] [ 34024/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=25523
  read : io=100MiB, bw=5,183KiB/s, runt= 20229msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max= 1107, avg=63.37, stdev=145.14
    bw (KiB/s) : min=    0, max=34945, per=115.47%, avg=6846.32, stdev=11271.86
  write: io=80,208KiB, bw=4,702KiB/s, runt= 17464msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  627, avg= 3.98, stdev=37.20
    bw (KiB/s) : min=    0, max=16663, per=40.00%, avg=6338.75, stdev=7980.71
  cpu          : usr=3.14%, sys=1.88%, ctx=4761
  IO depths    : 1=2.1%, 2=53.4%, 4=28.7%, 8=15.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=46.3%, 4=0.3%, 10=19.1%, 20=17.3%, 50=7.0%, 100=1.3%
     lat (msec): 250=4.0%, 500=3.2%, 750=0.9%, 1000=0.5%, >=2000=0.1%
fio: (groupid=0): err= 0: pid=25524
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=91.9%, 4=1.6%, 8=6.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=92.2%, 4=0.5%, 10=0.0%, 20=0.1%, 50=0.2%, 100=0.1%
     lat (msec): 250=4.7%, 500=2.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=25525
  read : io=0KiB, bw=0KiB/s, runt= 17480msec
  write: io=100MiB, bw=6,012KiB/s, runt= 17440msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=    2, avg= 0.15, stdev= 0.36
    bw (KiB/s) : min=    0, max=137117, per=432.65%, avg=68558.50, stdev=96956.36
  cpu          : usr=4.21%, sys=1.58%, ctx=3551
  IO depths    : 1=0.3%, 2=97.6%, 4=2.1%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=99.3%, 4=0.2%, 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=114MiB, aggrb=5,929KiB/s, minb=0KiB/s, maxb=5,183KiB/s, mint=17480msec, maxt=20229msec
  WRITE: io=264MiB, aggrb=15,846KiB/s, minb=0KiB/s, maxb=6,012KiB/s, mint=17480msec, maxt=20229msec

Disk stats (read/write):
  sda: ios=1654/2951, merge=676/64376, ticks=33872/2200172, in_queue=2238212, util=97.88%
2.09user 0.93system 0:20.59elapsed 14%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2474minor)pagefaults 0swaps