UMA Memory percentage Calculation

Products

• DX Application Performance Management

Issue/Introduction

How APM SaaS calculate the UMA Memory percentage?

Environment

APM  UMA 21.4

Resolution

UMA calculates the memory usage by subtracting cache memory from total memory usage. That's why memory usage value was different from GKE total memory (evictable + non-evictable)

Memory Usage = Total Memory Usage - Memory Cache Usage
Memory % = (Total Memory Usage / Memory Limit) * 100)

This difference i.e. subtracting cache usage from total usage for "Memory usage" metric and where as not doing same calculation for "Memory %" is confusing the users.