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
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=26878, got signal=6
Threads: 2: [m_F] [60.0% done] [  4772/ 84204 kb/s] [eta 00m:02s]
Threads: 2: [m_F] [66.7% done] [   460/  8628 kb/s] [eta 00m:02s]
Threads: 2: [m_F] [62.5% done] [   132/     0 kb/s] [eta 00m:03s]
Threads: 2: [m_F] [66.7% done] [   328/    96 kb/s] [eta 00m:03s]
Threads: 2: [F_F] [100.0% done] [   160/  7036 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_V] [71.4% done] [   392/     0 kb/s] [eta 00m:04s]
Threads: 2: [F_V] [73.3% done] [  4636/     0 kb/s] [eta 00m:04s]
Threads: 2: [V_V] [70.6% done] [  8168/     0 kb/s] [eta 00m:05s]
Threads: 2: [V_V] [76.5% done] [ 23304/     0 kb/s] [eta 00m:04s]
Threads: 2: [V_V] [77.8% done] [ 16912/     0 kb/s] [eta 00m:04s]
Threads: 2: [V_V] [83.3% done] [ 21880/     0 kb/s] [eta 00m:03s]
Threads: 2: [V_V] [94.1% done] [ 26204/     0 kb/s] [eta 00m:01s]
Threads: 2: [V_V] [100.0% done] [ 26564/     0 kb/s] [eta 00m:00s]
Threads: 2: [V_V] [100.0% done] [ 28952/     0 kb/s] [eta 00m:00s]
Threads: 2: [V_V] [100.0% done] [ 26928/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=26877
  read : io=100MiB, bw=5,338KiB/s, runt= 19641msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max= 1271, avg=57.97, stdev=129.27
    bw (KiB/s) : min=    8, max=28997, per=68.73%, avg=7502.48, stdev=8502.95
  write: io=93,384KiB, bw=7,925KiB/s, runt= 12065msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  903, avg= 5.45, stdev=50.81
    bw (KiB/s) : min=    0, max=128352, per=117.34%, avg=28461.00, stdev=55976.63
  cpu          : usr=3.85%, sys=1.96%, ctx=5526
  IO depths    : 1=1.6%, 2=53.5%, 4=29.8%, 8=15.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=48.2%, 4=0.9%, 10=19.0%, 20=13.1%, 50=6.0%, 100=3.0%
     lat (msec): 250=6.6%, 500=1.9%, 750=0.5%, 1000=0.5%, >=2000=0.1%
fio: (groupid=0): err= 0: pid=26878
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=93.4%, 4=2.2%, 8=4.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=86.1%, 4=7.5%, 10=1.6%, 20=0.1%, 50=0.0%, 100=0.4%
     lat (msec): 250=2.8%, 500=1.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=26879
  read : io=100MiB, bw=5,311KiB/s, runt= 19742msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  815, avg=54.94, stdev=86.51
    bw (KiB/s) : min=   16, max=18803, per=71.34%, avg=7787.21, stdev=5707.46
  write: io=95,764KiB, bw=10,253KiB/s, runt=  9564msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  150, avg= 1.07, stdev= 7.38
    bw (KiB/s) : min=    0, max=44962, per=87.52%, avg=21228.00, stdev=22585.51
  cpu          : usr=5.02%, sys=2.25%, ctx=4843
  IO depths    : 1=1.3%, 2=52.5%, 4=31.9%, 8=14.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=43.5%, 4=4.2%, 10=17.5%, 20=12.3%, 50=8.3%, 100=3.5%
     lat (msec): 250=8.9%, 500=1.5%, 750=0.1%, 1000=0.1%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=206MiB, aggrb=10,916KiB/s, minb=0KiB/s, maxb=5,338KiB/s, mint=19742msec, maxt=19742msec
  WRITE: io=279MiB, aggrb=24,256KiB/s, minb=0KiB/s, maxb=10,253KiB/s, mint=19742msec, maxt=19742msec

Disk stats (read/write):
  sda: ios=2360/1672, merge=905/66674, ticks=60744/1720828, in_queue=2566428, util=99.26%
2.79user 1.14system 0:20.07elapsed 19%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2485minor)pagefaults 0swaps