The updated GetGCMemoryInfo API in .NET 5.0 and how it can help you | .NET Blog
A bit of history In .NET 3.0 we introduced a GC.GetGCMemoryInfo API for library code to get memory load related things (this was used in ArrayPool for example) so it exposed things library folks wanted at the time. In 5.0 I got requests from folks to monitor more things about the GC.