gistfile1.txt

openstack flavor set g6 --property quota:disk_io_limit=800


fio result from the instance with g6 flavor

root@g6:/home/ubuntu#  fio --randrepeat=1 --ioengine=libaio --direct=1 --gtod_reduce=1 --name=test --filename=test --bs=4k --iodepth=64 --size=1G --readwrite=randrw --rwmixread=75
test: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=libaio, iodepth=64
fio-3.16
Starting 1 process
test: Laying out IO file (1 file / 1024MiB)
Jobs: 1 (f=1): [m(1)][100.0%][r=111MiB/s,w=37.7MiB/s][r=28.5k,w=9648 IOPS][eta 00m:00s]
test: (groupid=0, jobs=1): err= 0: pid=2453: Mon Mar  8 11:39:34 2021
  read: IOPS=27.7k, BW=108MiB/s (113MB/s)(768MiB/7104msec)
   bw (  KiB/s): min=94984, max=116704, per=100.00%, avg=111769.86, stdev=6135.87, samples=14
   iops        : min=23746, max=29176, avg=27942.43, stdev=1533.95, samples=14
  write: IOPS=9240, BW=36.1MiB/s (37.8MB/s)(256MiB/7104msec); 0 zone resets
   bw (  KiB/s): min=31800, max=39792, per=100.00%, avg=37355.50, stdev=2133.46, samples=14
   iops        : min= 7950, max= 9948, avg=9338.86, stdev=533.35, samples=14
  cpu          : usr=6.05%, sys=37.55%, ctx=158964, majf=0, minf=9
  IO depths    : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=0.1%, 32=0.1%, >=64=100.0%
     submit    : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
     complete  : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.1%, >=64=0.0%
     issued rwts: total=196498,65646,0,0 short=0,0,0,0 dropped=0,0,0,0
     latency   : target=0, window=0, percentile=100.00%, depth=64

Run status group 0 (all jobs):
   READ: bw=108MiB/s (113MB/s), 108MiB/s-108MiB/s (113MB/s-113MB/s), io=768MiB (805MB), run=7104-7104msec
  WRITE: bw=36.1MiB/s (37.8MB/s), 36.1MiB/s-36.1MiB/s (37.8MB/s-37.8MB/s), io=256MiB (269MB), run=7104-7104msec

Disk stats (read/write):
  vda: ios=196496/65648, merge=0/1, ticks=433307/15049, in_queue=164484, util=98.81%