The so-called GC (Garbage Collector) roots are special objects for garbage collector. The objects it collects are those that 1) are not GC roots and a) are not accessible by references from GC roots.
"GC Roots" view shows garbage collector roots sorted by types.
"GC Roots" view is NOT the best place to start memory leak detection - see Working with paths for
a better approach.
Instead, "GC Roots" view acts as an overview of all objects that could not be collected at the moment the snapshot was created. The view is provided for information purposes only.
For memory leak analysis please use the Find paths feature.