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: [mmm] [8.3% done] [  6336/  6636 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [11.4% done] [  4908/  8916 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [14.3% done] [ 12876/     0 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [16.7% done] [  9996/  2868 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [19.4% done] [  5436/  6464 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [21.6% done] [  5212/  6052 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [24.3% done] [  6220/  5132 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [27.0% done] [  4948/  5100 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [28.9% done] [  6280/  2712 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [30.8% done] [  6208/  2992 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [33.3% done] [  5520/  3584 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.0% done] [  5224/  3248 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [36.6% done] [  8120/  2112 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [39.0% done] [  4404/  6036 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [41.5% done] [  4212/  5116 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [42.9% done] [  6115/  3358 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [45.2% done] [  4403/  3351 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.5% done] [  7078/  1316 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.7% done] [  5006/  3718 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [50.0% done] [  5847/  1897 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [51.1% done] [  6807/     0 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [53.3% done] [  2356/  4356 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [54.3% done] [  2916/  4624 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [56.5% done] [  2476/  4468 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [57.4% done] [  3772/  3276 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [57.1% done] [  4848/  1540 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [58.0% done] [  3912/  3492 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [57.7% done] [  7244/     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=4126, got signal=6
Threads: 2: [V_m] [58.5% done] [  8136/   764 kb/s] [eta 00m:22s]
Threads: 2: [V_m] [58.2% done] [ 14476/   252 kb/s] [eta 00m:23s]
Threads: 2: [V_m] [58.9% done] [ 15944/   420 kb/s] [eta 00m:23s]
Threads: 1: [__m] [64.2% done] [  4316/  4664 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=4127, got signal=6

fio: (groupid=0): err= 0: pid=4125
  read : io=99MiB, bw=3,086KiB/s, runt= 33777msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    6, max=  787, avg=118.18, stdev=96.76
    bw (KiB/s) : min=   18, max=17866, per=50.07%, avg=3318.85, stdev=3754.32
  write: io=35,252KiB, bw=1,148KiB/s, runt= 31429msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  635, avg=137.04, stdev=85.92
    bw (KiB/s) : min=    0, max= 5176, per=47.94%, avg=1921.91, stdev=1682.66
  cpu          : usr=0.06%, sys=0.31%, ctx=9028
  IO depths    : 1=0.5%, 2=2.3%, 4=26.4%, 8=70.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.6%, 4=0.0%, 10=1.9%, 20=7.6%, 50=27.0%, 100=8.5%
     lat (msec): 250=48.8%, 500=4.7%, 750=0.3%, 1000=0.1%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=4126
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.2%, 2=0.8%, 4=15.7%, 8=83.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.0%, 10=0.6%, 20=3.0%, 50=17.5%, 100=3.6%
     lat (msec): 250=68.3%, 500=6.4%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=4127
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=2.2%, 4=17.0%, 8=80.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.1%, 4=0.0%, 10=0.6%, 20=4.3%, 50=17.9%, 100=3.2%
     lat (msec): 250=62.2%, 500=7.7%, 750=1.6%, 1000=0.5%, >=2000=0.5%

Run status group 0 (all jobs):
   READ: io=214MiB, aggrb=6,628KiB/s, minb=0KiB/s, maxb=3,086KiB/s, mint=0msec, maxt=33777msec
  WRITE: io=120MiB, aggrb=4,009KiB/s, minb=0KiB/s, maxb=1,148KiB/s, mint=0msec, maxt=33777msec

Disk stats (read/write):
  sda: ios=3975/2196, merge=624/373, ticks=83836/39608, in_queue=123444, util=99.04%
0.11user 0.36system 0:35.95elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2506minor)pagefaults 0swaps