def _delete_cgroup(self, path):
        """
        
        """
        node = trees.Tree().root
        path_split = path.split("/")
        for path_element in path_split:
            name_to_node = {x.name: x for x in node.children}
            if path_element not in name_to_node:
                self.log.warning("Cgroup does not exist: %s", path)
                return
            else:
                node = name_to_node[path_element]
        # node is now the leaf node
        parent = node.parent
        self.log.debug("Deleting cgroup %s/%s", parent, node.name)
        parent.delete_cgroup(node.name)