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] [ 10692/  2944 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [10.5% done] [  7792/  6380 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [13.5% done] [ 11064/  2176 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [16.2% done] [  6140/  6622 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [18.9% done] [  6812/  4560 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [21.6% done] [ 11396/   436 kb/s] [eta 00m:29s]
Threads: 3: [mmm] [24.3% done] [  8536/  2824 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [27.0% done] [  9928/   660 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [28.9% done] [  6668/  3372 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [30.8% done] [  7585/  2855 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [33.3% done] [  8236/  1052 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [35.0% done] [  4632/  4832 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [36.6% done] [  4180/  5512 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [39.0% done] [  4760/  4960 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [42.5% done] [  3084/  7428 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [43.9% done] [  5840/  2860 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [46.3% done] [  3832/  4668 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [47.6% done] [  5676/   576 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [48.8% done] [  6100/  1452 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [50.0% done] [  5836/  1196 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [52.3% done] [  4884/  1677 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [53.3% done] [  3492/  3948 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [54.3% done] [  5096/  1037 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [56.5% done] [  1293/  7050 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [56.2% done] [  1008/  6556 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [57.1% done] [  3140/  3668 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [58.0% done] [  3840/  3156 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [57.7% done] [  3344/  2684 kb/s] [eta 00m:22s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=11377, got signal=6
Threads: 2: [_Vm] [58.5% done] [  9744/   528 kb/s] [eta 00m:22s]
Threads: 2: [_Vm] [59.3% done] [ 16692/     0 kb/s] [eta 00m:22s]
Threads: 2: [_Vm] [59.6% done] [ 15884/     0 kb/s] [eta 00m:23s]
Threads: 1: [__m] [62.5% done] [ 10588/  2480 kb/s] [eta 00m:21s]
Threads: 1: [__m] [66.7% done] [  4604/  1632 kb/s] [eta 00m:18s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=11379, got signal=6

fio: (groupid=0): err= 0: pid=11377
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.5%, 2=1.9%, 4=20.4%, 8=77.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.0%, 10=1.8%, 20=3.7%, 50=15.3%, 100=9.6%
     lat (msec): 250=62.2%, 500=6.5%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=11378
  read : io=100MiB, bw=3,039KiB/s, runt= 34338msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  455, avg=104.26, stdev=91.01
    bw (KiB/s) : min=    5, max=19512, per=48.12%, avg=3436.75, stdev=4291.66
  write: io=46,920KiB, bw=1,552KiB/s, runt= 30949msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  560, avg=130.72, stdev=75.75
    bw (KiB/s) : min=    0, max= 6200, per=63.84%, avg=2406.30, stdev=1899.26
  cpu          : usr=0.03%, sys=0.34%, ctx=6717
  IO depths    : 1=0.6%, 2=2.6%, 4=29.5%, 8=67.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.5%, 4=0.0%, 10=3.7%, 20=8.2%, 50=29.3%, 100=5.5%
     lat (msec): 250=48.3%, 500=4.1%, 750=0.1%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=11379
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.4%, 4=15.5%, 8=82.7%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.9%, 4=0.0%, 10=1.1%, 20=1.2%, 50=19.4%, 100=1.9%
     lat (msec): 250=62.3%, 500=9.9%, 750=1.5%, 1000=1.2%, >=2000=0.1%

Run status group 0 (all jobs):
   READ: io=234MiB, aggrb=7,142KiB/s, minb=0KiB/s, maxb=3,039KiB/s, mint=0msec, maxt=34338msec
  WRITE: io=111MiB, aggrb=3,769KiB/s, minb=0KiB/s, maxb=1,552KiB/s, mint=0msec, maxt=34338msec

Disk stats (read/write):
  sda: ios=4210/2275, merge=675/321, ticks=83548/38352, in_queue=121900, util=99.31%
0.10user 0.30system 0:36.40elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2511minor)pagefaults 0swaps