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] [30.0% done] [  5924/ 54312 kb/s] [eta 00m:07s]
Threads: 3: [mmF] [30.8% done] [   186/     0 kb/s] [eta 00m:09s]
Threads: 3: [mmF] [29.4% done] [   251/     0 kb/s] [eta 00m:12s]
Threads: 3: [mmF] [30.0% done] [   174/     0 kb/s] [eta 00m:14s]
Threads: 3: [mmF] [30.4% done] [   755/    16 kb/s] [eta 00m:16s]
Threads: 3: [mmF] [30.8% done] [   308/   190 kb/s] [eta 00m:18s]
Threads: 3: [mmF] [30.0% done] [   534/   311 kb/s] [eta 00m:21s]
Threads: 3: [mmV] [31.2% done] [  6488/   238 kb/s] [eta 00m:22s]
Threads: 3: [mmV] [31.4% done] [ 27022/ 28021 kb/s] [eta 00m:24s]
Threads: 3: [mmV] [32.4% done] [ 22869/   642 kb/s] [eta 00m:25s]
Threads: 3: [mFV] [32.5% done] [ 13145/ 25774 kb/s] [eta 00m:27s]
Threads: 3: [mFV] [32.6% done] [   304/     0 kb/s] [eta 00m:29s]
Threads: 3: [mFV] [32.6% done] [  5205/     0 kb/s] [eta 00m:31s]
Threads: 3: [mVV] [33.3% done] [ 26376/   369 kb/s] [eta 00m:32s]
Threads: 2: [mV_] [45.9% done] [ 29431/ 18513 kb/s] [eta 00m:20s]
Threads: 2: [mV_] [46.2% done] [ 28261/     0 kb/s] [eta 00m:21s]
Threads: 2: [mV_] [46.3% done] [ 25430/     0 kb/s] [eta 00m:22s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5519, got signal=6

fio: (groupid=0): err= 0: pid=5519
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=84.3%, 4=4.4%, 8=11.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=85.5%, 4=0.4%, 10=0.1%, 20=0.2%, 50=0.3%, 100=2.8%
     lat (msec): 250=1.8%, 500=3.0%, 750=2.1%, 1000=1.0%, >=2000=1.2%
fio: (groupid=0): err= 0: pid=5520
  read : io=100MiB, bw=5,375KiB/s, runt= 19501msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max= 5791, avg=66.51, stdev=356.64
    bw (KiB/s) : min=    3, max=28783, per=63.32%, avg=7350.58, stdev=10079.45
  write: io=88,568KiB, bw=5,932KiB/s, runt= 15288msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max= 4038, avg= 8.93, stdev=121.37
    bw (KiB/s) : min=    0, max=18475, per=32.70%, avg=5858.00, stdev=8706.97
  cpu          : usr=3.79%, sys=2.32%, ctx=6923
  IO depths    : 1=1.0%, 2=50.0%, 4=31.8%, 8=17.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=45.7%, 4=2.7%, 10=11.5%, 20=22.0%, 50=9.9%, 100=1.7%
     lat (msec): 250=3.6%, 500=1.2%, 750=0.5%, 1000=0.3%, >=2000=0.1%
fio: (groupid=0): err= 0: pid=5521
  read : io=100MiB, bw=6,224KiB/s, runt= 16846msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max= 1295, avg=42.98, stdev=112.82
    bw (KiB/s) : min=   25, max=30851, per=98.08%, avg=11385.41, stdev=10321.48
  write: io=92,852KiB, bw=10,042KiB/s, runt=  9468msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  211, avg= 1.30, stdev=13.13
    bw (KiB/s) : min=    0, max=38620, per=107.79%, avg=19310.00, stdev=27308.46
  cpu          : usr=4.61%, sys=2.94%, ctx=6202
  IO depths    : 1=0.6%, 2=51.5%, 4=30.9%, 8=17.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=48.5%, 4=1.1%, 10=10.5%, 20=20.4%, 50=11.1%, 100=2.6%
     lat (msec): 250=4.7%, 500=0.5%, 750=0.0%, 1000=0.3%, >=2000=0.3%

Run status group 0 (all jobs):
   READ: io=216MiB, aggrb=11,608KiB/s, minb=0KiB/s, maxb=6,224KiB/s, mint=16846msec, maxt=19501msec
  WRITE: io=261MiB, aggrb=17,915KiB/s, minb=0KiB/s, maxb=10,042KiB/s, mint=16846msec, maxt=19501msec

Disk stats (read/write):
  sda: ios=2697/1536, merge=870/52839, ticks=66456/1177824, in_queue=1244284, util=97.61%
2.17user 1.26system 0:20.13elapsed 17%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2469minor)pagefaults 0swaps