The article explains how CPU scheduling works, why tasks can overload the processor, outlines common pitfalls such as dead loops, lock contention, memory leaks, priority inversion and context‑switch overload, and provides a step‑by‑step troubleshooting and remediation guide for Linux systems.
When a data platform server suddenly shows CPU usage above 90%, this guide walks you through using Linux tools and a custom script to identify the offending Java process, trace the problematic thread, pinpoint the exact code line, and apply a fix that reduces load dramatically.
This guide walks you through diagnosing and resolving typical yum command failures on CentOS 7—including 404 repository errors, package installation failures caused by immutable file attributes, and missing Python interpreter issues—providing step‑by‑step commands, repository configuration tips, and file‑system fixes to restore yum functionality.
A sudden high‑load alert on a web server was traced to Nginx’s massive write operations on fastcgi_temp files, revealed through top, iotop, lsof, strace and iostat, and temporarily resolved by redirecting fastcgi_temp to memory.
