I’m trying to figure out how GKE reserves memory based on machine type.

From the docs, it reserves memory based on the following calculation :

• 255 MiB of memory for machines with less than 1 GB of memory
• 25% of the first 4GB of memory
• 20% of the next 4GB of memory (up to 8GB)
• 10% of the next 8GB of memory (up to 16GB)
• 6% of the next 112GB of memory (up to 128GB)
• 2% of any memory above 128GB

I’m unsure as to what upto 8GB means.
Lets say I have a n1-standard-16 machine with 60 GB Memory and 16 Cores.

25% of 4GB = 1GB (covered first 4GB)
20% of next 4GB = 0.8 GB (covered next 4GB or should it be 8? whats the meaning of upto 8 GB here?)
10% 0f next 8GB = 0.8
6% of next 112 GB = 6% of remaining i.e 44(since we don't have 112 GB )= 2.64 

reserved_memory = 1+0.8+0.8+ 2.64 = 5.24
reserved_memory = 5.24 + 100MB (eviction threshold) + 100MB (OS reserved) = 5.44
total - reserved_memory = 54.56 GB is the allocatable memory?

Same goes for CPU reservartions

• 6% of the first core
• 1% of the next core (up to 2 cores)
• 0.5% of the next 2 cores (up to 4 cores)
• 0.25% of any cores above 4 cores

with 16 Cores we can calculate the following:

6% of first core = 0.6 (60 milicores)
1% of next core = 0.01 (10 milicores) (again here, what is upto 2 cores?)
0.5% of next 2 cores = 0.01 (10 milicores) (upto 4 cores) 
0.25% of remaining 12 cores  = 0.03 (30 milicores) 

reserved = 100 milicores 
total - reserved = 160000 - 100 = 15900 milicores 

Somewhat similar calculation is followed by AKS and EKS as well.