=================
System Monitoring
=================

System monitoring refers to inspecting runtime system metrics such as CPU usage,
temperature, or uptime, in real-time.

The last section of the ``show version`` command displays a snapshot of most useful
metrics:

.. code-block:: none

  admin@osdx$ show version

  Bootloader name:           U-Boot
  Bootloader version:        2018.03-g2fc31fe-1.19-0++teldat~master~26~2fc31fe
  Bootloader build date:     Jun 28 2023 - 12:00:00

  OS vendor:                 Windbit
  OS name:                   OSDx
  OS version:                v3.8.1.1
  OS Linux kernel:           5.10.127
  OS built by:               jenkins@daphne
  OS build date:             Thu Jun 29 10:34:33 UTC 2023
  OS installation:           physical
  OS boot mode:              user
  OS min bootloader:         0
  License:                   RS420_BASE DPI RD-ETSI RD-FCC RD-NOM RD-ROW WLAN

  Hardware vendor:           Windbit
  Hardware model:            RS420
  Hardware version:          1
  Hardware S/N:              DAAXZ-000153
  Hardware UUID:             299ad66a-b315-514d-91f5-7851c57401e6
  Hardware architecture:     arm64
  Hardware fwid:             marvell_a
  Hardware base MAC:         00:a0:26:0e:00:9f
  Hardware cpu:              1 x Cortex-A53 (2 cores)
  Hardware mfg date:         2023W20

  Last reboot reason:        Performed by user

  Date:                      Thu 14 Feb 2019 12:18:46 PM UTC
  Uptime:                    0:01:56
  CPU load (1m, 5m, 15m):    1.17 0.73 0.29
  CPU usage % (1m):          56.86
  Storage usage (kB):        284877/3710628
  Memory usage (kB):         246236/1002232
  Temperature (ºC):          0
  Users logged in:           1
  Mode (current/next boot):  user/user

  Hostname:                  osdx

Additionally, OSDx supports displaying some of these metrics in a text-based dynamic
graph through the ``monitor system graph`` command family.

*Examples*:

.. figure:: cpu_graph.png
  :width: 400px

  *CPU graph*

.. figure:: mem_graph.png
  :width: 400px

  *Memory graph*

The graph may be exited by pressing ``Ctrl+C``.