Linux Server Performance Analysis: CPU, RAM and Disk Density Detection
When your Linux-based game or web servers experience sudden slowdowns, freezes or unresponsiveness, you need to know whether the problem is caused by a lack of hardware resources or an application in the background. In this article, you will learn how to instantly monitor server resources and detect bottlenecks with Linux terminal commands.
Command 1: Advanced Task Manager (htop)
The most popular tool that, unlike the standard `top` command, displays all processor cores and RAM consumption in color and graphically:
- Ubuntu installation:
apt install htop -y| AlmaLinux installation:dnf install htop -y - To run it in terminal htop Just write it. You can see the applications that consume the most CPU and memory at the top, and you can view the problematic process (PID) from the keyboard.
F9You can terminate it instantly (Kill) by pressing the button.
Command 2: Disk Read/Write (I/O) Speed Analysis (iotop)
The reason for the slowness on your server may not be the processor but too much data being written to disk (Disk I/O bottleneck). To detect this:
- To the terminal
iotopBy typing, you can instantly monitor the MySQL query or log writing process that is using the disk the most at that moment in MB/s.
Command 3: Network Traffic and Instant Bandwidth (iftop)
Monitor the network interface to see if your server is experiencing a DDoS attack or if a script is consuming excessive traffic:
- To the terminal
iftopBy typing, you can watch all external IP addresses connected to your server and how many Mbps of data those IPs send/receive with live graphics.
This article is specially prepared for PvPServer.
