Linux Knowledge Base

Centralized repository of technical facts, conceptual notes, and architectural references for Linux-based systems. This index documents system internals and theoretical standards in a neutral, descriptive format.

Kernel & Core

[2026-01] [NEW] eBPF Subsystem Architecture - Notes on helper functions and maps in modern kernels.
[2025-08] Memory Management: Cgroups v2 - Reference documentation on resource isolation and hierarchy.
[2024-11] [WIP] Systemd Boot Sequence - Descriptive map of target units and initialization phases.

Filesystems & Storage

[2025-10] [NEW] Btrfs Send/Receive Logic - Conceptual overview of subvolume snapshot transfer mechanisms.
[2025-03] XFS On-Disk Format Reference - Factual data regarding allocation groups and inode structures.
[2022-05] EXT3 Journaling Modes [OBSOLETE] - Comparative notes on data=journal vs data=ordered behaviors.

Networking Stack

[2025-12] [NEW] Netfilter vs Nftables - Technical comparison of hook points and bytecode execution.
[2025-05] QUIC Protocol Implementation - Notes on user-space UDP handling and congestion control.
[2024-02] [WIP] WireGuard Cryptographic Primitives - Reference list of protocols used for the tunnel layer.