You might be asking some questions reading yesterday's post. Why I would need to modify GC Hard limit settings❓
In most cases - you don't want to. But if you are running in a container you might want to consider being explicit.
GC by default reserves higher of the two: 20 MB or 75% of available memory (https://github.com/dotnet/runtime/blob/main/src/coreclr/gc/gcpriv.h#L5127). But memory might be needed for some other type of resources. Depending on the case it might be correct or it might be too low or too much. AppContext.SetData allows us to be specific 🔎 about our managed memory needs.
So again, if you work in a constraint environment consider
AppContext.SetData("GCHeapHardLimit", (ulong)300 * 1_024 * 1_024);
GC.RefreshMemoryLimit();