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
"AKS reserves an additional 2GB for system process in Windows nodes that are not part of the calculated 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
"AKS reserves an additional 2GB for system process in Windows nodes that are not part of the calculated memory."
https://learn.microsoft.com/en-us/azure/aks/concepts-cluster...