stat

Returns a Hash containing information about the GC.

The hash includes information about internal statistics about GC such as:

{
    :count=>2,
    :heap_used=>9,
    :heap_length=>11,
    :heap_increment=>2,
    :heap_live_slot=>6836,
    :heap_free_slot=>519,
    :heap_final_slot=>0,
    :heap_swept_slot=>818,
    :total_allocated_object=>7674,
    :total_freed_object=>838,
    :malloc_increase=>181034,
    :malloc_limit=>16777216,
    :minor_gc_count=>2,
    :major_gc_count=>0,
    :remembered_shady_object=>55,
    :remembered_shady_object_limit=>0,
    :old_object=>2422,
    :old_object_limit=>0,
    :oldmalloc_increase=>277386,
    :oldmalloc_limit=>16777216
}

The contents of the hash are implementation specific and may be changed in the future.

This method is only expected to work on C Ruby.