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] [8.1% done] [ 10901/  2583 kb/s] [eta 00m:34s]
Threads: 3: [mmm] [10.8% done] [  9704/  2520 kb/s] [eta 00m:33s]
Threads: 3: [mmm] [13.5% done] [  9286/  3127 kb/s] [eta 00m:32s]
Threads: 3: [mmm] [16.2% done] [ 12343/     0 kb/s] [eta 00m:31s]
Threads: 3: [mmm] [18.9% done] [  9271/  3528 kb/s] [eta 00m:30s]
Threads: 3: [mmm] [22.2% done] [  3367/ 10019 kb/s] [eta 00m:28s]
Threads: 3: [mmm] [25.0% done] [  9208/  1240 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [27.0% done] [  8923/  1344 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [28.9% done] [  8513/  1909 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [30.8% done] [  6600/  1994 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [32.5% done] [  5892/  4048 kb/s] [eta 00m:27s]
Threads: 3: [mmm] [35.0% done] [  4626/  5495 kb/s] [eta 00m:26s]
Threads: 3: [mmm] [37.5% done] [  5044/  4016 kb/s] [eta 00m:25s]
Threads: 3: [mmm] [40.0% done] [  4776/  4232 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [41.5% done] [  4268/  4140 kb/s] [eta 00m:24s]
Threads: 3: [mmm] [43.9% done] [  4928/  4494 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [45.2% done] [  6245/  1986 kb/s] [eta 00m:23s]
Threads: 3: [mmm] [47.6% done] [  6788/     0 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [48.8% done] [  5679/  3047 kb/s] [eta 00m:22s]
Threads: 3: [mmm] [51.2% done] [  5280/  2356 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [52.3% done] [  4598/  1631 kb/s] [eta 00m:21s]
Threads: 3: [mmm] [54.5% done] [  3856/  2856 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [55.6% done] [  1596/  6088 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [56.5% done] [  5460/  2056 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [57.4% done] [  3836/  1914 kb/s] [eta 00m:20s]
Threads: 3: [mmm] [58.0% done] [  6636/   868 kb/s] [eta 00m:21s]
Threads: 3: [Vmm] [58.8% done] [  3808/  3620 kb/s] [eta 00m:21s]
Threads: 3: [Vmm] [58.5% done] [ 16784/   152 kb/s] [eta 00m:22s]
Threads: 3: [Vmm] [59.3% done] [ 16676/    88 kb/s] [eta 00m:22s]
Threads: 2: [_mm] [60.0% done] [ 13820/   100 kb/s] [eta 00m:22s]
Threads: 2: [_mm] [61.8% done] [  5628/  2316 kb/s] [eta 00m:21s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5195, got signal=6
Threads: 1: [__m] [64.8% done] [  3280/  4168 kb/s] [eta 00m:19s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=5196, got signal=6

fio: (groupid=0): err= 0: pid=5194
  read : io=100MiB, bw=3,213KiB/s, runt= 32610msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  439, avg=107.24, stdev=88.19
    bw (KiB/s) : min=   47, max=18552, per=48.98%, avg=3699.12, stdev=4443.23
  write: io=43,676KiB, bw=1,501KiB/s, runt= 29789msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  339, avg=128.57, stdev=67.66
    bw (KiB/s) : min=    0, max= 6330, per=64.47%, avg=2443.35, stdev=2022.73
  cpu          : usr=0.02%, sys=0.40%, ctx=6260
  IO depths    : 1=0.6%, 2=2.5%, 4=27.3%, 8=69.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.2%, 4=0.0%, 10=2.9%, 20=8.3%, 50=24.9%, 100=11.8%
     lat (msec): 250=48.4%, 500=3.3%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=5195
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.3%, 2=1.2%, 4=17.0%, 8=81.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.3%, 4=0.0%, 10=1.5%, 20=3.8%, 50=16.9%, 100=4.0%
     lat (msec): 250=60.5%, 500=10.2%, 750=1.6%, 1000=0.8%, >=2000=0.2%
fio: (groupid=0): err= 0: pid=5196
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=1.4%, 4=16.2%, 8=82.1%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.4%, 4=0.0%, 10=1.0%, 20=3.2%, 50=15.7%, 100=4.2%
     lat (msec): 250=62.9%, 500=9.7%, 750=1.4%, 1000=1.1%, >=2000=0.2%

Run status group 0 (all jobs):
   READ: io=235MiB, aggrb=7,553KiB/s, minb=0KiB/s, maxb=3,213KiB/s, mint=0msec, maxt=32610msec
  WRITE: io=108MiB, aggrb=3,790KiB/s, minb=0KiB/s, maxb=1,501KiB/s, mint=0msec, maxt=32610msec

Disk stats (read/write):
  sda: ios=4063/2117, merge=915/734, ticks=89028/34952, in_queue=123980, util=98.87%
0.08user 0.46system 0:36.11elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2503minor)pagefaults 0swaps