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
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=31628, got signal=6
Threads: 2: [F_m] [42.9% done] [  4392/ 48384 kb/s] [eta 00m:04s]
Threads: 2: [F_m] [40.0% done] [   855/     0 kb/s] [eta 00m:06s]
Threads: 2: [F_m] [41.7% done] [   356/     0 kb/s] [eta 00m:07s]
Threads: 2: [F_m] [40.0% done] [   448/   372 kb/s] [eta 00m:09s]
Threads: 2: [V_m] [41.2% done] [ 12028/     0 kb/s] [eta 00m:10s]
Threads: 2: [V_m] [42.1% done] [ 20988/     0 kb/s] [eta 00m:11s]
Threads: 2: [V_m] [42.9% done] [ 29924/     0 kb/s] [eta 00m:12s]
Threads: 2: [V_m] [43.5% done] [ 25136/   300 kb/s] [eta 00m:13s]
Threads: 1: [__m] [61.1% done] [ 15592/ 23307 kb/s] [eta 00m:07s]
Threads: 1: [__m] [63.2% done] [  1255/     0 kb/s] [eta 00m:07s]
Threads: 1: [__F] [100.0% done] [   725/  9585 kb/s] [eta 00m:00s]
Threads: 1: [__F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__F] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 1: [__V] [67.9% done] [  1288/     0 kb/s] [eta 00m:09s]
Threads: 1: [__V] [87.0% done] [ 27396/     0 kb/s] [eta 00m:03s]
Threads: 1: [__V] [100.0% done] [ 32084/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=31627
  read : io=100MiB, bw=9,690KiB/s, runt= 10821msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  567, avg=27.24, stdev=54.46
    bw (KiB/s) : min=   22, max=32280, per=156.30%, avg=15067.23, stdev=11780.98
  write: io=97,488KiB, bw=15,501KiB/s, runt=  6440msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  338, avg= 1.09, stdev=11.94
    bw (KiB/s) : min=    0, max=120766, per=325.18%, avg=48124.00, stdev=64007.47
  cpu          : usr=7.47%, sys=3.62%, ctx=3638
  IO depths    : 1=1.4%, 2=56.2%, 4=30.8%, 8=11.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=49.4%, 4=0.6%, 10=20.8%, 20=13.6%, 50=9.0%, 100=3.4%
     lat (msec): 250=2.4%, 500=0.6%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=31628
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.6%, 2=88.9%, 4=7.9%, 8=2.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=84.0%, 4=8.6%, 10=4.3%, 20=0.2%, 50=0.1%, 100=0.3%
     lat (msec): 250=1.0%, 500=1.2%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=31629
  read : io=100MiB, bw=4,716KiB/s, runt= 22230msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max= 1432, avg=67.20, stdev=152.61
    bw (KiB/s) : min=    7, max=34824, per=70.50%, avg=6796.47, stdev=11307.31
  write: io=81,724KiB, bw=4,365KiB/s, runt= 19168msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max= 1238, avg= 7.59, stdev=62.17
    bw (KiB/s) : min=    0, max=22978, per=48.94%, avg=7242.83, stdev=9206.10
  cpu          : usr=3.72%, sys=1.60%, ctx=6356
  IO depths    : 1=0.9%, 2=45.2%, 4=33.4%, 8=20.5%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=38.2%, 4=5.5%, 10=14.0%, 20=22.7%, 50=7.4%, 100=2.4%
     lat (msec): 250=4.6%, 500=2.8%, 750=1.3%, 1000=0.5%, >=2000=0.2%

Run status group 0 (all jobs):
   READ: io=204MiB, aggrb=9,640KiB/s, minb=0KiB/s, maxb=9,690KiB/s, mint=22230msec, maxt=22230msec
  WRITE: io=271MiB, aggrb=14,799KiB/s, minb=0KiB/s, maxb=15,501KiB/s, mint=22230msec, maxt=22230msec

Disk stats (read/write):
  sda: ios=2530/2539, merge=893/66653, ticks=43760/2395188, in_queue=2440096, util=97.19%
2.66user 1.04system 0:22.56elapsed 16%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (0major+2494minor)pagefaults 0swaps