This guide explains what kdump is, how it works, and provides step‑by‑step instructions for installing, configuring, and verifying kdump on Linux systems, plus tips for analyzing vmcore files with crash and GDB.
This article explains why the Windows "Update and Shut Down" option sometimes restarts the computer instead of powering off, describes the KB5067036 update that fixes the task‑manager related bug, and provides command‑line steps to kill stray processes and reset Windows Update components.
The article explains the meaning of a process being in the “D” state on Linux, describing it as an uninterruptible sleep caused by blocked I/O, how to identify it with tools like ps or top, why it cannot be killed, and common troubleshooting steps.
Learn step‑by‑step how to capture a Linux core dump with kdump, install the crash utility and debuginfo packages, and use commands like sys, bt, ps, files, and sym to trace the root cause of kernel panics, illustrated with a real‑world case study.
This article outlines a comprehensive, step‑by‑step approach to performance testing and root‑cause analysis for backend services, covering environment validation, tool selection, Linux system limits, dependency checks, empty‑endpoint verification, throughput calculation, log monitoring, and essential Linux commands such as netstat, vmstat, mpstat, iostat, top and free.
This article shares practical methods for frontline engineers to quickly understand, assess, and resolve online system problems by categorizing system layers, evaluating impact, using essential Linux monitoring tools, and applying systematic troubleshooting and design‑for‑failure strategies to minimize downtime.
This article outlines a systematic methodology for understanding, evaluating, and quickly resolving production system incidents by categorizing system layers, assessing impact, employing Linux diagnostic tools, and designing fault‑tolerant mechanisms to minimize downtime and maintain core functionality.
This article presents a systematic methodology for diagnosing and resolving online system issues, covering system understanding, impact assessment, rapid recovery techniques, detailed troubleshooting steps with Linux and Java tools, and design principles to mitigate future failures.
When system performance degrades, start by examining OS reports—CPU usage, memory consumption, disk and network I/O, and connection counts—using tools like Windows PerfMon, Linux vmstat, iostat, top, iftop, or Wireshark to pinpoint bottlenecks before diving into code.
