Sysadmin - Free Hosting Blog

DPDK vs XDP: Comparing High-Performance Packet Processing Frameworks on Linux

October 1, 2026 by Ranjan

Compare DPDK vs XDP for high-speed Linux packet processing. Evaluate kernel bypass versus in-kernel eBPF datapaths, latency, and production tuning.

Should You Disable CPU Mitigations on Linux? Performance Gains vs Security Risks

October 1, 2026 by Ranjan

Disabling CPU mitigations yields 5% to 30% I/O gains but exposes memory to side-channel exploits. Here is the operational risk vs reward guide.

ISO 27001 Compliance Requirements and Implementation Guide for Small Hosting Agencies

September 30, 2026 by Ranjan

Achieve ISO 27001:2022 certification for small hosting agencies with our production Linux hardening, ISMS controls, and automated audit architectures.

Policy-as-Code with Kyverno: Enforcing Security Policies in Kubernetes Clusters

September 30, 2026 by Ranjan

Master Kyverno Policy-as-Code to secure Kubernetes clusters. Automate admission control, image verification, and governance with native YAML manifests.

Linux CPU Governor Tuning for Maximum Energy Savings on Always-On Web Servers

September 30, 2026 by Ranjan

Optimize Linux CPU frequency scaling and energy-performance preference (EPP). Cut server power draw by 40% while preserving sub-millisecond tail latency.

ARM vs x86 Server Architecture: Power Efficiency and Web Hosting Performance in 2026

September 30, 2026 by Ranjan

Compare ARM vs x86 server power efficiency and hosting performance in 2026. Discover how Neoverse and x86-64 optimize data center TCO and web workloads.

Automating Raspberry Pi Fleet Provisioning and Configuration with Ansible

September 30, 2026 by Ranjan

Orchestrate enterprise Raspberry Pi edge fleets with Ansible. Automate OS bootstrap, SSH hardening, and kernel tuning at scale without configuration drift.

Building a Multi-Location Edge CDN with Nginx, GeoDNS and Budget VPS Nodes

September 30, 2026 by Ranjan

Deploy a high-performance DIY edge CDN across continents using Nginx reverse proxy caching and GeoDNS on budget VPS nodes. Slash TTFB and origin load globally.