The status module

The status module allows you to view or manipulate the following aspects of ThinLinc, by selecting the relevant submenu:

  • Licenses allows you to view license usage.

  • Load allows you to check the current workload on the ThinLinc agents.

  • Sessions allows you to terminate, shadow or view details of sessions.

Licenses

The licenses menu provides graphs showing current and historical license usage, along with the current total number of licenses. It also includes functionality to generate a graph displaying license usage over a specified number of days in the past.

Load

The load menu displays information about system utilization across the ThinLinc agents, enabling administrators to monitor performance metrics and evaluate the capacity for adding more users to the cluster.

The overview shows the current workload for each agent in the ThinLinc cluster, including the total number of users (not only users running ThinLinc sessions), memory usage, CPU usage, and rating. To view load details for a specific agent, click on the agent’s name. A popup will appear with detailed information about the selected session. Refer to the list below for explanation of the rating and other load parameters.

  • ThinLinc users: The number of users on the agent running one or more ThinLinc sessions.

  • Total number of users: The total numbers of unique users on the agent (not only users running ThinLinc sessions). This includes both human users as well as system users for background processes.

  • Memory (used RAM+swap): The combined total of RAM and swap memory currently in use.

  • RAM (used/total): The amount of RAM currently used compared to the total available RAM.

  • Swap (used/total): The amount of swap memory currently used compared to the total available swap memory.

  • CPU: The total CPU resources being utilized across all available CPUs.

  • Load (1 min): The CPU load 1-minute average.

  • Number of CPUs: The total number of available CPUs.

  • Bogomips: A measurement of the system’s computational capacity, providing an estimate of processing performance.

  • Rating: A score indicating the agent’s capacity to handle additional sessions; for example, a rating of 10.0 suggests that the agent can accommodate approximately 10 more sessions.

  • Penalty points: Points assigned to the agent for performance issues, such as slow response times or additional users connecting. These points negatively impact the agent’s rating.

  • Last updated: The timestamp indicating when the load information was last refreshed.

Sessions

When you select the sessions menu, a table with all currently active sessions is displayed. To perform additional tasks, click on the corresponding username. This will bring up the session details popup, which displays all the session parameters for the chosen session. The information table in the popup is described below.

  • Created: A timestamp for when the session was initially created.

  • Session status: The health status of the session as seen by the master machine.

  • Connection status: The current connection status between the client and the session.

  • Last connection: A timestamp for when the last connection was initiated and the IP address of the last connected client.

  • Agent: The DNS host name of the server that is hosting the session, as seen by the master machine.

  • Agent server address: The DNS host name of the server that is hosting this session, as seen by the client machine.

  • Display number: Each session on a certain server has a unique number, the X Window System display number. Display zero is reserved, and never used for ThinLinc sessions.

  • Terminal ID: An identification of the thin terminal. This is the terminal’s hardware address (MAC address).

  • Framebuffer size: The size (resolution) of the active session.

  • Local screen size: The size (resolution) of the terminal’s screen.

  • Session process ID: The PID (process identification number) of the tl-session process, which is the parent for all processes belonging to a certain session.

  • Command: The command line that was specified when starting this session. This is usually empty for full desktop sessions.

Below the session information table, there are two buttons:

  • Terminate session: By clicking this button, you can terminate a session immediately. Caution: This can lead to data loss, since applications running on the ThinLinc servers may not hold unsaved data.

  • Shadow session: This button will generate a ThinLinc “launch file” (see Launching the client from a web page) that starts the native ThinLinc client, preconfigured to shadow the current user.

    Note

    The user might not be informed that shadowing is in progress if shadowing notification has been disabled. See Shadowing for details.