limiting egress traffic - CoS - is failling

I have setup CS724T switch, and followed the document:

Rate Limiting / Traffic Shaping

I only need to use 5 ports. 

Internet connected with 1 Gbit to port 1 and CoS = 0 and the other 4 port as follows.

I have made the CoS values like this

        port     -  wanted     -     measured   -    CoS value

        port 22  500 Mbit - down 8,2 Mbps  -  CoS 8000
        port 21 350 Mbit - down 5,64 Mbps -  CoS 5600
        port 20  80 Mbit  - down 1,25 Mbps  - CoS 1280
        port 19  70 Mbit - down 1,12 Mbps  -  CoS 1120

If 1 Gbps = 16000 then 500 Mbit must be 8000 etc.

With 1 Gbps on port 1 and CoS = 0, and a PC connected to the other ports one by one, I had the down load written above.

Then I took one port and the CoS as follows, and got the downloads

  port 22  CoS  8000 -  Download 4.65 Mbps
  port 22  CoS  12000 - Download  11,37 Mbps
  port 22  CoS  16000 - Download 15,15 Mbps

Then I tried with port 1 still CoS=0, and the changed the download port 22 to CoS = 0

 And now Download was 1 Gbit

I also tried change CoS a factor 10, and result looks like the same.

  port 21 - down 5,64 Mbps -  CoS 5600

  port 21 - down  0,56 Mbps -  CoS 560

Looks like the values I get is around 60-64 times to small

wanted  500 Mb got 8.2 that gives  500/8,2 equal 61

         70 Mbit / 1,12  = 62,5.

Can someone explain how I get the right value. Max CoS number is 16346, and it gives around 16 Mbps.

I should be around 1.000.000 to give me 1 Gbps