F.43. system_stats
Prev UpAppendix F. Additional Supplied ModulesHome Next

F.43. system_stats

F.43.1. Security
F.43.2. Functions
F.43.3. Detailed output of each functions

system_stats is a LightDB extension that provides functions to access system level statistics that can be used for monitoring.

F.43.1. Security

Due to the nature of the information returned by these functions, access is restricted to superusers and members of the monitor_system_stats role which will be created when the extension is installed. To allow users to access the functions without granting them superuser access, add them to the monitor_system_stats role. For example: 

GRANT monitor_system_stats to nagios;

F.43.2. Functions

The following functions are provided to fetch system level statistics for all platforms.

F.43.2.1. pg_sys_os_info

This interface allows the user to get operating system statistics.

F.43.2.2. pg_sys_cpu_info

This interface allows the user to get CPU information.

F.43.2.3. pg_sys_cpu_usage_info

This interface allows the user to get CPU usage information. Values are a percentage of time spent by CPUs for all operations.

F.43.2.4. pg_sys_memory_info

This interface allows the user to get memory usage information. All the values are in bytes.

F.43.2.5. pg_sys_io_analysis_info

This interface allows the user to get an I/O analysis of block devices.

F.43.2.6. pg_sys_disk_info

This interface allows the user to get the disk information.

F.43.2.7. pg_sys_load_avg_info

This interface allows the user to get the average load of the system over 1, 5, 10 and 15 minute intervals.

F.43.2.8. pg_sys_process_info

This interface allows the user to get process information.

F.43.2.9. pg_sys_network_info

This interface allows the user to get network interface information.

F.43.2.10. pg_sys_cpu_memory_by_process

This interface allows the user to get the CPU and memory information for each process ID.

F.43.3. Detailed output of each functions

F.43.3.1. pg_sys_os_info

  • Name

  • Version

  • Host name

  • Domain name

  • Handle count

  • Process count

  • Thread count

  • Architecture

  • Last bootup time

  • Uptime in seconds

F.43.3.2. pg_sys_cpu_info

  • Vendor

  • Description

  • Model name

  • Processor type

  • Logical processor

  • Physical processor

  • Number of cores

  • Architecture

  • Clock speed in hz

  • CPU type

  • CPU family

  • Byte order

  • L1d cache size

  • L1i cache size

  • L2 cache size

  • L3 cache size

F.43.3.3. pg_sys_cpu_usage_info

  • Percent time spent in processing usermode normal process

  • Percent time spent in processing usermode niced process

  • Percent time spent in kernel mode process

  • Percent time spent in idle mode

  • Percent time spent in io completion

  • Percent time spent in servicing interrupt

  • Percent time spent in servicing software interrupt

  • Percent user time spent

  • Percent processor time spent

  • Percent privileged time spent

  • Percent interrupt time spent

F.43.3.4. pg_sys_memory_info

  • Total memory

  • Used memory

  • Free memory

  • Total swap memory

  • Used swap memory

  • Free swap memory

  • Total cache memory

  • Total kernel memory

  • Kernel paged memory

  • Kernel non paged memory

  • Total page file

  • Available page file

F.43.3.5. pg_sys_io_analysis_info

  • Block device name

  • Total number of reads

  • Total number of writes

  • Read bytes

  • Written bytes

  • Time spent in milliseconds for reading

  • Time spent in milliseconds for writing

F.43.3.6. pg_sys_disk_info

  • File system of the disk

  • File system type

  • Mount point for the file system

  • Drive letter

  • Drive type

  • Total space in bytes

  • Used space in bytes

  • Available space in bytes

  • Number of total inodes

  • Number of used inodes

  • Number of free inodes

F.43.3.7. pg_sys_load_avg_info

  • 1 minute load average

  • 5 minute load average

  • 10 minute load average

  • 15 minute load average

F.43.3.8. pg_sys_process_info

  • Number of total processes

  • Number of running processes

  • Number of sleeping processes

  • Number of stopped processes

  • Number of zombie processes

F.43.3.9. pg_sys_network_info

  • Name of the interface_name

  • ipv4 address of the interface

  • Number of total bytes transmitted

  • Number of total packets transmitted

  • Number of transmit errors by this network device

  • Number of packets dropped during transmission

  • Number of total bytes received

  • Number of total packets received

  • Number of receive errors by this network device

  • Number of packets dropped by this network device

  • Interface speed in mbps

F.43.3.10. pg_sys_cpu_memory_by_process

  • PID of the process

  • Process name

  • CPU usage in bytes

  • Memory usage in bytes

  • Total memory used in bytes

Prev Up Next
F.42. rum Home F.44. tablefunc