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Table of Contents
1. Use the uptime command to view the system running time and load
2. Use top or htop to view real-time load
3. Read /proc/uptime and /proc/loadavg directly
Home System Tutorial LINUX How to see my system's uptime and load average?

How to see my system's uptime and load average?

Jun 26, 2025 am 12:27 AM

If you want to know the running time and load of Linux system, you can use the following methods: 1. Use the uptime command to view the system running time and the average load of nearly 1, 5, and 15 minutes; 2. Use the top or htop tools to dynamically view the real-time load information. It is recommended to install htop to obtain a more friendly interface; 3. Directly read /proc/uptime to obtain the total number of running seconds and /proc/loadavg to obtain the load average, which is suitable for script monitoring.

How to see my system\'s uptime and load average?

Want to know how long your system has been running and how it has been recently loaded? Linux and Unix-like systems provide several simple but practical commands to view this information. Here are a few methods you can use directly.


1. Use the uptime command to view the system running time and load

uptime is the most direct way. Open the terminal and enter:

 uptime

The output result looks like this:

 14:30:00 up 3 days 5 hours, 2 users, load average: 0.15, 0.10, 0.05
  • "up 3 days 5 hours" indicates how long the system has been running continuously.
  • The last three numbers are the average loads of the past 1 minute, 5 minutes and 15 minutes respectively.

This command is suitable for quick viewing and can get key information without additional parameters.


2. Use top or htop to view real-time load

If you want to see dynamically updated load information, you can use top :

 top

In the first row you will see load data similar to uptime .

Tips: htop is a more friendly alternative that supports color and a clearer interface. If not installed, you can use the package manager to install it, for example:

 sudo apt install htop # Debian/Ubuntu

Then run:

 htop

3. Read /proc/uptime and /proc/loadavg directly

For those who like to go deep into system files, you can directly view the contents in the /proc file system:

Check the run time (in seconds):

 cat /proc/uptime

The output is similar:

 298320.12 298000.00

The first number is how many seconds the system has run in total.

View load average:

 cat /proc/loadavg

The output is similar:

 0.15 0.10 0.05 1/200 1234

The first three items are the average load of 1, 5, and 15 minutes.


Basically these are the methods. You can choose which command to use according to your habits. If you are writing scripts or monitoring, it is recommended to use /proc/loadavg ; if it is just a daily viewing, uptime and htop are more convenient.

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