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: [mFF] [30.0% done] [  1180/     0 kb/s] [eta 00m:07s]
Threads: 3: [mFF] [66.7% done] [   528/ 44864 kb/s] [eta 00m:02s]
Threads: 3: [mFF] [71.4% done] [   464/  6572 kb/s] [eta 00m:02s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=19537, got signal=6
Threads: 2: [_FF] [100.0% done] [     0/  4380 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_FF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 2: [_VF] [69.2% done] [   203/     0 kb/s] [eta 00m:04s]
Threads: 2: [_VV] [71.4% done] [ 24775/     0 kb/s] [eta 00m:04s]
Threads: 2: [_VV] [84.6% done] [ 37571/     0 kb/s] [eta 00m:02s]
Threads: 2: [_VV] [92.3% done] [ 31134/     0 kb/s] [eta 00m:01s]
Threads: 2: [_VV] [100.0% done] [ 31878/     0 kb/s] [eta 00m:00s]
Threads: 2: [_VV] [100.0% done] [ 37616/     0 kb/s] [eta 00m:00s]
Threads: 1: [__V] [100.0% done] [ 22324/     0 kb/s] [eta 00m:00s]
Threads: 1: [__V] [100.0% done] [  8600/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=19537
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.7%, 2=89.4%, 4=4.0%, 8=5.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=88.8%, 4=3.6%, 10=0.2%, 20=0.2%, 50=0.4%, 100=0.8%
     lat (msec): 250=2.7%, 500=1.7%, 750=1.4%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=19538
  read : io=100MiB, bw=7,165KiB/s, runt= 14633msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  333, avg=27.30, stdev=47.63
    bw (KiB/s) : min=   25, max=30269, per=111.31%, avg=14624.92, stdev=8716.08
  write: io=98,836KiB, bw=11,181KiB/s, runt=  9051msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=   42, avg= 0.43, stdev= 1.92
    bw (KiB/s) : min=    0, max=59407, per=93.48%, avg=29703.50, stdev=42007.09
  cpu          : usr=5.74%, sys=3.17%, ctx=4874
  IO depths    : 1=3.0%, 2=53.1%, 4=31.5%, 8=12.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=48.3%, 4=2.7%, 10=20.9%, 20=15.7%, 50=5.2%, 100=2.2%
     lat (msec): 250=4.4%, 500=0.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=19539
  read : io=100MiB, bw=6,344KiB/s, runt= 16526msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  415, avg=35.46, stdev=59.30
    bw (KiB/s) : min=    4, max=25201, per=97.96%, avg=12871.07, stdev=7379.16
  write: io=97,752KiB, bw=10,648KiB/s, runt=  9400msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  206, avg= 0.99, stdev=10.25
    bw (KiB/s) : min=    0, max=123265, per=193.97%, avg=61632.50, stdev=87161.52
  cpu          : usr=4.87%, sys=3.19%, ctx=4464
  IO depths    : 1=1.7%, 2=55.8%, 4=31.7%, 8=10.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=48.9%, 4=0.9%, 10=23.4%, 20=11.8%, 50=4.9%, 100=2.8%
     lat (msec): 250=6.3%, 500=0.8%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=207MiB, aggrb=13,139KiB/s, minb=0KiB/s, maxb=7,165KiB/s, mint=14633msec, maxt=16526msec
  WRITE: io=285MiB, aggrb=31,774KiB/s, minb=0KiB/s, maxb=11,181KiB/s, mint=14633msec, maxt=16526msec

Disk stats (read/write):
  sda: ios=1913/1751, merge=787/68504, ticks=28608/1754840, in_queue=2143612, util=98.93%
2.50user 1.29system 0:16.90elapsed 22%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2479minor)pagefaults 0swaps