cpu usage

This article provides a comprehensive guide on diagnosing and resolving high CPU and memory usage issues with Apache on Linux. It covers common causes like high traffic and inefficient scripts, tools for monitoring such as `top` and `ps`, and steps for optimization including configuration adjustments and module management. Further, it stresses regular performance checks to maintain server efficiency and uptime.

Profiling Bash scripts with `perf stat` helps optimize performance by analyzing CPU and system call usage. Simple to use, developers can prepend `perf stat` to their command, receiving detailed output on CPU cycles, cache hits, and more, aiding in pinpointing inefficiencies and understanding resource use in Linux environments.

Flame graphs are vital for spotting CPU usage hotspots, particularly in Bash scripts on Linux. These graphs plot the time spent in script segments, helping optimize performance. By using tools like **perf** and **FlameGraph**, developers can visually analyze and refine Bash script efficiency, identifying and addressing performance bottlenecks effectively.

The blog post explains how to parse the `ps` command in Linux to monitor and calculate cumulative CPU usage of processes by integrating it with tools like `awk`. Starting with a Q&A section, it progresses into practical examples and a custom Bash script, demonstrating CPU usage tracking for system optimization and effective resource management in Linux system administration.

Explore the powerful 'top' command in Linux, an essential tool for monitoring and managing system processes in real-time. Understand dynamic CPU and memory usage, installation methods across different distributions using package managers, and learn to customize and navigate 'top' for efficient system administration. Dive deeper with further readings on related tools for enhanced Linux performance and monitoring.

Learn to monitor CPU usage with `mpstat`, part of the `sysstat` package on Linux, useful for performance analysts and system administrators. This guide includes installation instructions for various distributions like Ubuntu and Fedora, explains key performance indicators such as `%usr` and `%sys`, and offers tips on utilizing `mpstat` alongside other tools for detailed system analysis and effective capacity planning. Ideal for both experts and novices in optimizing system performance.

Explore the functionalities of `top` and `htop` for monitoring Linux system resources. This article explains how these tools offer insights into CPU use, memory consumption, and process management. `top` provides a classic, real-time system display, whereas `htop` offers a user-friendly interface with features like mouse support for enhanced navigation. Essential for administrators, these tools aid in efficient system performance management and optimization.