DROP FUNCTION pg_sys_cpu_info();
DROP FUNCTION pg_sys_cpu_usage_info();
DROP FUNCTION pg_sys_memory_info();
DROP FUNCTION pg_sys_io_analysis_info();
DROP FUNCTION pg_sys_disk_info();
DROP FUNCTION pg_sys_load_avg_info();
DROP FUNCTION pg_sys_os_info();
DROP FUNCTION pg_sys_process_info();
DROP FUNCTION pg_sys_network_info();
DROP FUNCTION pg_sys_cpu_memory_by_process();
