How to Use the Command `tlp-stat` (with examples)
The tlp-stat
command is a comprehensive tool used to generate status reports about the power management configuration and status of a Linux system. TLP is a feature-rich tool for managing power and optimizing battery life on laptops. The tlp-stat
command provides detailed insights into various aspects of your system’s power management settings and hardware, making it an essential utility for system administrators and enthusiasts who want to ensure optimal performance and energy efficiency.
Use case 1: Generate Status Report with Configuration and All Active Settings
Code:
sudo tlp-stat
Motivation:
Running this command allows users to obtain a full report of all active settings and configuration parameters related to power management on their system. This is particularly useful when diagnosing power efficiency issues or checking if TLP is configured correctly.
Explanation:
sudo
: This command needs superuser privileges because it queries system-level settings.tlp-stat
: Invokes the tool to generate the status report.
Example Output:
--- TLP 1.3.1 --------------------------------------------
+++ Configured Settings:
...
+++ System Information
...
+++ Power Supply Diagnostics
...
+++ Battery Status
...
Use case 2: Show Information About Various Devices
Code:
sudo tlp-stat --battery|disk|processor|graphics|pcie|rfkill|usb
Motivation:
This command allows users to query specific components of their system, revealing detailed information about each. This can be vital for debugging hardware issues or optimizing specific device settings.
Explanation:
sudo
: Needed for accessing low-level system information.tlp-stat
: The command used to generate the report.--battery|disk|processor|graphics|pcie|rfkill|usb
: Flags to select specific devices to include in the report. For instance,--battery
queries the battery status, while--usb
focuses on USB device information.
Example Output:
--- TLP 1.3.1 --------------------------------------------
+++ Battery Status:
Charge = 85.7%
...
+++ Processor:
CPU Min/Max Frequency: 800 MHz / 3000 MHz
...
+++ USB Devices:
Bus 002 Device 003: ID 046d:c31c Logitech, Inc. Keyboard
...
Use case 3: Show Verbose Information About Devices That Support Verbosity
Code:
sudo tlp-stat --verbose --battery|processor|pcie|usb
Motivation:
This command is used when detailed debug-level information is needed. Verbose mode provides exhaustive details about the components, which can be instrumental in deep-dive diagnostics and fine-tuning.
Explanation:
sudo
: Superuser privileges required.tlp-stat
: Command to execute the status report.--verbose
: Turns on detailed output mode.--battery|processor|pcie|usb
: Specific components to include in the verbose report.
Example Output:
+++ Verbose Battery Information:
Battery Mode: Primary
Design Voltage: 11200 mV
...
+++ Verbose Processor Information:
Core 0: status 0, 800 MHz
...
Use case 4: Show Configuration
Code:
sudo tlp-stat -c|--config
Motivation:
To get a comprehensive view of all configured TLP parameters, users can use this command. It’s useful for verifying configurations or preparing system documentation.
Explanation:
sudo
: Required for accessing configuration files.tlp-stat
: Invokes the TLP status tool.-c|--config
: Options for displaying current configuration settings in TLP.
Example Output:
--- TLP 1.3.1 --------------------------------------------
+++ Configuration:
TLP_ENABLE=1
...
Use case 5: Monitor Power Supply ‘udev’ Events
Code:
sudo tlp-stat -P|--pev
Motivation:
Running this command helps users monitor power events related to the ‘udev’ device manager in Linux. This is crucial for diagnosing issues with devices not responding correctly to power state changes.
Explanation:
sudo
: Access to device manager is restricted to superuser.tlp-stat
: Executes the monitoring process.-P|--pev
: Options to view power supply events.
Example Output:
Monitoring power supply udev events...
(Press Ctrl-C to abort)
Use case 6: Show Power Supply Diagnostics
Code:
sudo tlp-stat --psup
Motivation:
This command offers insights into the power supply hardware and diagnostics status. It’s useful for examining power irregularities or failures.
Explanation:
sudo
: Required for accessing hardware diagnostics.tlp-stat
: Calls the necessary utility.--psup
: Specifically focused on power supply information.
Example Output:
--- TLP 1.3.1 --------------------------------------------
+++ Power Supply Diagnostics
Warning: Battery charge below threshold!
...
Use case 7: Show Temperatures and Fan Speed
Code:
sudo tlp-stat -t|--temp
Motivation:
This command can be invaluable when monitoring internal temperatures and fan speeds to prevent overheating and ensure efficient thermal management.
Explanation:
sudo
: Needed for accessing hardware sensors.tlp-stat
: The tool to provide the required output.-t|--temp
: Options that focus on temperature and fan speed data.
Example Output:
--- TLP 1.3.1 --------------------------------------------
+++ Temperatures
CPU: 45°C
...
+++ Fan Speed
Fan 1: 2500 RPM
...
Use case 8: Show General System Information
Code:
sudo tlp-stat -s|--system
Motivation:
For a quick overview of the system’s general status, this command gives a summary of the key components and their current statuses. It is a great starting point for a general health inspection of the machine.
Explanation:
sudo
: Superuser permissions are needed.tlp-stat
: The command that retrieves the information.-s|--system
: Flags to display system-specific information.
Example Output:
--- TLP 1.3.1 --------------------------------------------
+++ System Info
System = LENOVO ThinkPad X1
BIOS = N1QET91W (1.66 )
...
Conclusion
The tlp-stat
command is an extensively powerful tool for managing and diagnosing the power efficiency and hardware status of Linux systems. By leveraging the different use cases of tlp-stat
, users can gain critical insights into their systems’ performance, pinpoint any underlying issues, and ensure their devices are tuned for optimal efficiency and longevity.