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] [9.4% done] [ 12768/  3005 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [12.1% done] [  4127/ 15025 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [14.7% done] [  6218/  9432 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [16.7% done] [  9629/  4068 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [18.4% done] [ 12709/   393 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [21.1% done] [  7077/  7601 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [23.7% done] [  6037/  6848 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [25.6% done] [  8286/  3242 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [28.2% done] [  8910/  2976 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [30.0% done] [  4709/  7697 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [31.7% done] [  6859/  4103 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [33.3% done] [  3888/  6885 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [36.6% done] [  4326/  6917 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [38.1% done] [  7112/  1980 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [40.5% done] [  8048/  1726 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [43.9% done] [  6402/  3558 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [45.2% done] [  7940/   791 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.6% done] [  3042/  5832 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [48.8% done] [  3295/  4602 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [50.0% done] [  4796/  2580 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [53.5% done] [   236/  8428 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [58.5% done] [  1300/  7564 kb/s] [eta 00m:17s]
Threads: 3: [mVm] [59.1% done] [ 12776/     0 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=2215, got signal=6
Threads: 2: [mV_] [60.0% done] [ 12610/   127 kb/s] [eta 00m:18s]
Threads: 2: [mV_] [59.6% done] [ 19319/   183 kb/s] [eta 00m:19s]
Threads: 1: [m__] [63.0% done] [ 10212/  3502 kb/s] [eta 00m:17s]
Threads: 1: [m__] [66.7% done] [     0/  6908 kb/s] [eta 00m:15s]
Threads: 1: [V__] [79.5% done] [ 18360/   168 kb/s] [eta 00m:08s]
Threads: 1: [V__] [94.1% done] [ 23628/     0 kb/s] [eta 00m:02s]
fio: (groupid=0): err= 0: pid=2213
  read : io=100MiB, bw=3,223KiB/s, runt= 32458msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  915, avg=92.31, stdev=122.72
    bw (KiB/s) : min=   26, max=26400, per=46.07%, avg=3927.24, stdev=5815.00
  write: io=50,164KiB, bw=1,709KiB/s, runt= 30049msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  827, avg=98.93, stdev=135.57
    bw (KiB/s) : min=    0, max= 8441, per=59.19%, avg=2729.37, stdev=2905.83
  cpu          : usr=0.22%, sys=0.39%, ctx=6629
  IO depths    : 1=1.3%, 2=7.9%, 4=47.5%, 8=43.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=1.0%, 4=0.0%, 10=9.0%, 20=23.1%, 50=26.2%, 100=10.5%
     lat (msec): 250=18.9%, 500=8.9%, 750=1.7%, 1000=0.4%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2214
  read : io=99MiB, bw=3,648KiB/s, runt= 28589msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    6, max=  295, avg=75.01, stdev=61.34
    bw (KiB/s) : min=   62, max=18521, per=55.94%, avg=4769.14, stdev=5080.67
  write: io=48,964KiB, bw=2,220KiB/s, runt= 22580msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  389, avg=104.37, stdev=75.19
    bw (KiB/s) : min=    0, max= 8737, per=66.19%, avg=3052.12, stdev=2482.51
  cpu          : usr=0.28%, sys=0.28%, ctx=5866
  IO depths    : 1=0.6%, 2=3.4%, 4=43.8%, 8=52.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.1%, 4=0.0%, 10=2.7%, 20=12.3%, 50=26.7%, 100=22.1%
     lat (msec): 250=32.7%, 500=3.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=2215
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=2.2%, 4=30.8%, 8=66.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.0%, 10=0.8%, 20=4.2%, 50=13.8%, 100=25.0%
     lat (msec): 250=49.0%, 500=5.8%, 750=0.3%, 1000=0.2%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=264MiB, aggrb=8,525KiB/s, minb=0KiB/s, maxb=3,648KiB/s, mint=0msec, maxt=32458msec
  WRITE: io=132MiB, aggrb=4,611KiB/s, minb=0KiB/s, maxb=2,220KiB/s, mint=0msec, maxt=32458msec

Disk stats (read/write):
  sda: ios=4987/2819, merge=667/213, ticks=67460/47464, in_queue=114920, util=98.75%
0.24user 0.34system 0:32.87elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2487minor)pagefaults 0swaps