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] [13.0% done] [  8852/ 13345 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [17.4% done] [ 11828/  8556 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [20.8% done] [  9237/  8768 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [24.0% done] [ 12363/  3422 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [26.9% done] [ 15332/  2664 kb/s] [eta 00m:19s]
Threads: 3: [mmm] [30.8% done] [ 12319/  4657 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [34.6% done] [  7004/  9676 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [38.5% done] [  8586/  4793 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [40.7% done] [ 10769/  2908 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [44.4% done] [  6232/  9660 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [48.1% done] [  4932/  8480 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [51.9% done] [  6736/  5512 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [53.6% done] [  7752/  3504 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.2% done] [  3468/  7735 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [56.7% done] [  2364/  7976 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [58.1% done] [  2268/  7528 kb/s] [eta 00m:13s]
Threads: 3: [mVm] [59.4% done] [ 11399/  1948 kb/s] [eta 00m:13s]
Threads: 3: [mVm] [58.8% done] [ 17105/   175 kb/s] [eta 00m:14s]
Threads: 2: [m_m] [60.0% done] [ 11714/  3135 kb/s] [eta 00m:14s]
Threads: 2: [m_m] [62.9% done] [  3076/  5728 kb/s] [eta 00m:13s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=1426, got signal=6
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 1: [m__] [67.6% done] [   472/  8092 kb/s] [eta 00m:11s]
fio: pid=1424, got signal=6

fio: (groupid=0): err= 0: pid=1424
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.9%, 2=4.3%, 4=32.8%, 8=62.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.2%, 4=0.2%, 10=1.9%, 20=7.1%, 50=16.1%, 100=24.3%
     lat (msec): 250=42.8%, 500=4.4%, 750=0.7%, 1000=0.9%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=1425
  read : io=100MiB, bw=4,917KiB/s, runt= 21301msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  243, avg=66.86, stdev=53.45
    bw (KiB/s) : min=   39, max=17408, per=58.22%, avg=5715.71, stdev=4737.32
  write: io=38,180KiB, bw=2,082KiB/s, runt= 18776msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  298, avg=66.15, stdev=53.86
    bw (KiB/s) : min=    0, max= 7746, per=37.69%, avg=2898.29, stdev=2181.70
  cpu          : usr=0.30%, sys=0.62%, ctx=5077
  IO depths    : 1=1.4%, 2=7.1%, 4=43.2%, 8=48.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.1%, 4=0.0%, 10=7.7%, 20=15.8%, 50=25.3%, 100=21.7%
     lat (msec): 250=27.9%, 500=0.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=1426
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.8%, 2=4.2%, 4=43.0%, 8=52.0%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.0%, 4=0.1%, 10=1.6%, 20=5.5%, 50=22.0%, 100=26.7%
     lat (msec): 250=38.1%, 500=2.9%, 750=0.8%, 1000=0.9%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=199MiB, aggrb=9,817KiB/s, minb=0KiB/s, maxb=4,917KiB/s, mint=0msec, maxt=21301msec
  WRITE: io=138MiB, aggrb=7,690KiB/s, minb=0KiB/s, maxb=2,082KiB/s, mint=0msec, maxt=21301msec

Disk stats (read/write):
  sda: ios=3309/2870, merge=451/297, ticks=42228/40348, in_queue=82572, util=98.70%
0.31user 0.40system 0:24.07elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2468minor)pagefaults 0swaps