- Install the System Activity Reporter package on your Linux system.
- Configure SAR to monitor your website or service.
- Use SAR to detect security breaches and performance issues.
- Monitor SAR’s resources usage to determine if you’re using too much CPU or memory on your system.
Steps to use System Activity Reporter
Prerequisites
- Linode is a cloud-based server service that provides access to a wide range of applications and services, including software updates.
- There are existing articles about updating packages in Linode’s documentation, so you can be sure that you’re doing everything you need to be up and running with the latest software.
- If you’re not sure whether your server is a production server, please check our documentation for instructions on how to update packages on Linode.
Step 2: To view sar statistics, we can use the sar command with the -v option: In this example, we can see that the system is currently using 1.5GB of memory and has been for the past hour. ..
Install and Configure sar
The open-source sar program is frequently used, but it’s not included in most Linux distributions. You must install it as part of the sysstat package. This section shows you how to install sar on the Debian/Ubuntu Linux distributions.
Step 2: Use the sar command to view system resource usage: Step 3: To reduce system resource usage, use the sar command to identify which processes are using the most resources. ..
Step 2: Sar must be enabled before it can begin to collect data. To enable Sar, open the /etc/default/sysstat configuration file, and change the value of ENABLED to true.
cat /etc/cron.d/sysstat
cat /etc/sysstat/sysstat.d
nano /etc/cron.d/sysstat
nano /etc/sysstat/sysstat.d
The first line of the file contains the default values for sar, while the second line sets up a custom cron job to check sysstats files for changes.
set sar frequency [number] The number can be any integer from 1 to 99. ..
Using sar
- As an interactive program:
sar -a
- As a shell program:
sh sar
Step 2: To use sar as an interactive program, you can use the -a option to specify the path to the sar executable. To use the sar executable in a shell program, you can use the -s option.
This command displays the current day’s saXX data to the standard output. If you omit the saXX data file, sar will default to displaying the current day’s saXX data in a text file.
- sar -f saXX data file
sar -p 24
The number corresponds to the day of the month for which the data was collected. The example command displays the cumulative real-time CPU usage of all CPU cores on the 24th day of the current month: ..
Final Words
We hope you enjoy our article on how to use System Activity Reporter. A lot of information about your computer can be displayed by the System Activity Reporter, which can also save that information to files for subsequent examination. The sysstat package includes this application and any related tools. The software is set to run both at 10-minute intervals and once per day at 23:59 on Debian and the majority of other distributions. Depending on your distribution, one of sar’s two default scripts, sa1 or sa2, runs instead of calling sar directly.