HI,
Please help review the code. Under the existing metirc framework, some new system and process metrics like sys_free_physical_memory_size, process_mem_ratio, and sys_disk_free_space have been added, which will provide more useful information helping us resolving system problems, detecting potential system risks and enhancing system stability. PR: https://github.com/apache/iotdb/pull/5406/files#diff-21aadf817eed8be94a3bf9a72ff626bf56fb53190a1be4262627f4fc581e8a41 zhenqiang CISDI INFO
