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15 articles · Page 1 of 1
MaGe Linux Operations
MaGe Linux Operations
Jul 23, 2026 · Operations

When Linux CPU spikes to 99%, these 6 commands saved me three times

If a Linux server shows 99% CPU usage, don’t restart immediately; instead use a systematic chain of six diagnostic commands—uptime, top, ps, pidstat, mpstat, and sar—combined with cgroup, thread, and log analysis to pinpoint the true cause, whether user‑space computation, I/O wait, soft‑interrupts, virtualization steal, or container limits, and then apply targeted remediation.

CPULinuxMonitoring
0 likes · 24 min read
When Linux CPU spikes to 99%, these 6 commands saved me three times
MaGe Linux Operations
MaGe Linux Operations
Jul 11, 2026 · Operations

Step‑by‑Step Guide to Diagnose 100 % CPU on a Linux Server

When a Linux server’s CPU spikes to 100 %, this article walks through a systematic investigation—from defining what “CPU 100 %” really means, gathering timestamps and metrics, using tools like top, mpstat, vmstat, pidstat, sar, perf, and strace, to tracing processes, threads, containers, and Kubernetes, building an evidence chain, applying low‑risk fixes, and verifying the resolution.

CPUKubernetesLinux
0 likes · 24 min read
Step‑by‑Step Guide to Diagnose 100 % CPU on a Linux Server
Raymond Ops
Raymond Ops
Jun 24, 2026 · Operations

How to Diagnose Linux Server CPU Spikes: A Practical Step‑by‑Step Guide

This article presents a systematic, evidence‑driven process for locating and resolving high CPU usage on Linux servers, covering environment preparation, layered troubleshooting from whole‑machine to thread level, concrete command examples, real‑world case studies, best‑practice recommendations, and monitoring configurations.

CPULinuxops
0 likes · 33 min read
How to Diagnose Linux Server CPU Spikes: A Practical Step‑by‑Step Guide
Liangxu Linux
Liangxu Linux
Sep 15, 2022 · Operations

10 Essential Linux Commands to Diagnose Performance Issues in One Minute

When a Linux server’s load spikes, you can quickly pinpoint CPU, memory, disk I/O, and network bottlenecks by running ten concise commands—uptime, dmesg, vmstat, mpstat, pidstat, iostat, free, sar, and top—each providing specific metrics for rapid troubleshooting.

Command LineLinuxperformance
0 likes · 20 min read
10 Essential Linux Commands to Diagnose Performance Issues in One Minute
Liangxu Linux
Liangxu Linux
Aug 31, 2021 · Operations

10 Essential Linux Commands to Diagnose Server Performance in the First Minute

When a Linux server shows performance problems, the first 60 seconds are critical; using ten standard command‑line tools such as uptime, dmesg, vmstat, mpstat, pidstat, iostat, free, sar, and top lets you quickly assess load, memory, I/O, and network health to pinpoint the root cause.

Command LineLinuxServer Diagnostics
0 likes · 18 min read
10 Essential Linux Commands to Diagnose Server Performance in the First Minute
Liangxu Linux
Liangxu Linux
Jun 7, 2020 · Operations

How to Diagnose Linux Server Performance in the First 60 Seconds

When you log into a Linux server for performance troubleshooting, Netflix’s engineering team shows that running ten standard command‑line tools within the first minute gives a comprehensive view of system load, resource saturation, errors, and bottlenecks, enabling rapid root‑cause analysis.

Command LineOperationsperformance monitoring
0 likes · 21 min read
How to Diagnose Linux Server Performance in the First 60 Seconds
MaGe Linux Operations
MaGe Linux Operations
Jul 31, 2014 · Operations

Master Linux Performance Monitoring with sar: A Complete Guide

This article explains how to use the sar (System Activity Reporter) tool on Linux to collect and analyze performance data, covering past and real‑time statistics, CPU, memory, I/O and swap metrics, installation steps, and a full list of command‑line options.

CPU usageLinux performanceMemory usage
0 likes · 9 min read
Master Linux Performance Monitoring with sar: A Complete Guide