linuxconfig.org Image: linuxconfig.orgCPU-MEM-monitor is a great simple script to track Linux CPU memory usage over time and generated with a CSV report that can be easily evaluated and generated with Excel or OpenOffice Calc for example. More specifically, this script allows you to track CPU usage for each thread and callback usage by automatically analyzing the output of the TOP or PIDSTAT utilities.
Processor performance is one aspect that only measures system performance, which is literally important for measuring overall system performance.
If the CPU of an ideal Linux system is occupied by different processes, it will not be available for other requests, and the remaining team will have to wait until the CPU is usually free.
When your system is under load it can slow down Make your application work and become a complete bottleneck in the system.
There are many CPU monitoring and display programs available on Linux such as top, htop, look, etc.
In this tutorial, we have added shell scripts to track CPU usage on a Linux system. This is highly recommended if the user only has a few systems to help him control.
These scripts send an email with the correct email id when the technology reaches a certain threshold.
Read the following blog posts to learn more about monitoring storage and disk usage with email notification capability:
How to track disk usage using shell scripts
How to find out the most common memory processes in Linux
Method 1: Linux Shell Script To Track CPU Usage With One Email Notification
If you just want to track the percentage of CPU usage (with one noteE-mail) rather than information about the processes when the system reaches a certain threshold, use the scenario below.
This is a simple and straightforward script that sends an email when your system is using 80% CPU.
* / 5 * * * * / usr / bin / cat / proc / loadavg Awk | 'Print $ 1' Awk | 'if ($ 1> 80) printf ("Current CPU usage:% .2f% n"), $ 0;' | mail -s "CPU Usage Alert" [email is being protected]
Note. Modify the email ID and CPU utilization thresholds according to these requirements.
Result: You will receive an email notification similar to the one below.
Current CPU utilization: 80.40%
Method 2: Write A Linux Shell To Track CPU Usage With Email Alert
If you would like to get detailed information about the CPU utilization processes through email notifications, use the following script.
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This requires information on the 10 most CPU-intensive tasks based on the top and p commands. C. Order.
This gives you an immediate idea of what’s going on on your system.
An email will be sent when your system reaches 90% CPU usage please
Note. Change my email ID and CPU usage thresholds as needed.
# vi /opt/scripts/cpu-alert.sh#! / bin / bashcpuuse = $ (cat / proc / loadavg | awk 'print -f $ 3' | cut 1 -g ".")if ["$ cpuuse" -ge]; then ninetySUBJECT = "WARNING: high CPU usage on $ (hostname) since $ (date)"MESSAGE = "/ tmp / Mail.out"To = " [protected by email] " echo "Current CPU usage is usually: $ cpuuse%" >> $ MESSAGE echo "" >> $ MESSAGE echo "+ ----------------------------------------------- ------------ ------------------- + ">> $ MESSAGE present "Top 20 Processes Using an Exceptional Processor" >> $ MESSAGE echo "+ ----------------------------------------------- - ------------ ------------------- + ">> $ MESSAGE echo "$ (top -bn1 | end -20)" >> $ MESSAGE echo "" >> $ MESSAGE echo "+ ----------------------------------------------- - ------------ ------------------- + ">> $ MESSAGE show "Top 10 Processes Using Massive CPU Using ps Command" >> $ MESSAGE echo "+ ----------------------------------------------- - ------------ ------------------- + ">> $ MESSAGE Mirror "$ (ps -eo pcpu, pid, user, args| sort -k 9 -r | head -10) ">> $ MESSAGE send -s "$ SUBJECT" "$ A" <$ MESSAGE rm /tmp/Mail.outanotherecho "Server CPU usage below threshold" fi
Finally, add a cron job to this computer. It will be updated every 5 minutes.
