elasticsearch-js/docs/reference/api/NodesCgroupMemory.md

Interface NodesCgroupMemory

Name	Type	Description
control_group	string	The memory control group to which the Elasticsearch process belongs.
limit_in_bytes	string	The maximum amount of user memory (including file cache) allowed for all tasks in the same cgroup as the Elasticsearch process. This value can be too big to store in a long, so is returned as a string so that the value returned can exactly match what the underlying operating system interface returns. Any value that is too large to parse into a long almost certainly means no limit has been set for the cgroup.
usage_in_bytes	string	The total current memory usage by processes in the cgroup, in bytes, by all tasks in the same cgroup as the Elasticsearch process. This value is stored as a string for consistency with limit_in_bytes.