Cpu Memory

How to Configure Windows Reliability Monitor on Windows Server 2022 — step-by-step Windows Server 2022 tutorial on Progressive Robot

How to Configure Windows Reliability Monitor on Windows Server 2022

Introduction to Reliability Monitor on Windows Server 2022 Reliability Monitor is a built-in Windows Server 2022 diagnostic tool that provides a chronological view of system stability by correlating software installations, updates, application crashes, Windows failures, and other events against a rolling reliability index score. While not a real-time monitoring tool, it is invaluable for post-incident […]

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How to Manage Paging Space on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Manage Paging Space on IBM AIX 7.2

Introduction IBM AIX 7.2 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.2 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to manage paging space on ibm aix 7.2 on IBM […]

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How to Set Up Dovecot IMAP Server on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Set Up Dovecot IMAP Server on FreeBSD 12

Introduction This guide explains how to Set Up Dovecot IMAP Server on FreeBSD 12 on FreeBSD 12. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum for […]

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How to Configure Huge Pages for Database Performance on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Configure Huge Pages for Database Performance on RHEL 9

Standard Linux memory pages are 4 KB, and the kernel must maintain a Translation Lookaside Buffer (TLB) entry for each mapped page. Database systems that manage large shared memory segments — such as PostgreSQL’s shared_buffers, Oracle’s SGA, or MySQL’s InnoDB buffer pool — can create millions of TLB entries, causing frequent TLB misses that significantly […]

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Common Problems 116985

Ubuntu 22.04 LTS – Kubelet node NotReady from cgroup mismatch – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 1 December 2022 Affected versions: Ubuntu 22.04 LTS 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]

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How to Set Up Windows Admin Center on Windows Server 2022 — step-by-step Windows Server 2022 tutorial on Progressive Robot

How to Set Up Windows Admin Center on Windows Server 2022

What Is the Sysinternals Suite? The Sysinternals Suite is a collection of advanced diagnostic and troubleshooting utilities for Windows developed originally by Mark Russinovich and Bryce Cogswell, and now maintained by Microsoft. The tools provide deep visibility into the Windows operating system that Task Manager, Event Viewer, and other built-in tools simply cannot match. For […]

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Common Problems 111740

Windows Server 2022 — Performance Monitor counters missing after server role install — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 28 November 2022 Affected versions: Windows Server 2022 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution — Primary Fix Solution — Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]

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How to Use Global vs System WPARs on IBM AIX 7.3 — step-by-step IBM AIX 7.3 tutorial on Progressive Robot

How to Use Global vs System WPARs on IBM AIX 7.3

Introduction IBM AIX 7.3 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.3 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to use global vs system wpars on IBM AIX 7.3 […]

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How to Set Up Node Exporter for Server Metrics on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Set Up Node Exporter for Server Metrics on Debian 9

Introduction Debian 9 Stretch is built around the ethos of stability and free software. Setting up set up node exporter for server metrics on debian 9 on Stretch leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Stretch freeze. Follow each […]

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Common Problems 116942

Ubuntu 22.04 high CPU usage from gnome-shell

🟡 Medium   ⏱ 5–30 min  Last verified: 25 November 2022 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & Cross-Refs References & Further […]

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