Linux Commands to Troubleshoot Performance Issues
When troubleshooting performance issues on Linux systems, you can use a variety of commands to help diagnose and identify the root cause. Here are some commonly used commands:
- top: This command shows you the real-time system performance, highlighting processes and their resource usage.
$ top- ps: It lists running processes on the system, allowing you to see their resource consumption.
$ ps aux- htop: Similar to top, htop provides an interactive and colorful process viewer with more features.
$ htop- vmstat: This command provides information about overall system performance, including memory, CPU, and I/O statistics.
$ vmstat- iostat: You can use iostat to monitor and collect statistics related to input/output (I/O) devices, including disks.
$ iostat -d- sar: The sysstat package provides sar, a command-line utility that collects, reports, and analyzes system activity.
$ sar -u- netstat: Use this command to gather information about network connections, interfaces, and stats.
$ netstat -a- iftop: It helps you monitor network bandwidth usage by displaying a real-time interactive interface.
$ iftop- dmesg: This command shows kernel ring buffer messages, which can be useful for investigating hardware-related issues.
$ dmesg- free: It provides information about available and used memory on the system.
$ free -mThese commands should give you a good starting point to troubleshoot performance issues on Linux.