This article explains Android's client/server architecture, detailing how public manager APIs act as client stubs, how system services are implemented and registered using AIDL, ServiceManager, and SystemService, and discusses hidden APIs, boot phases, and the modular APEX system for updates.
The article outlines Android’s cold‑start sequence, describing how the system’s zygote, system_server services, and Activity Manager Service allocate resources, fork a new process, create the Application and Activity objects, render the first UI frame, and replace the placeholder window, helping developers diagnose and optimize launch performance.
This guide explains how to list all running Linux services, inspect their status, and examine service configurations using systemd commands, netstat, and the /etc/services file on CentOS/RHEL and older SysV init systems.
This article explains the Android boot sequence, covering the bootloader's two stages, Linux kernel initialization, the Init process, the Zygote process that spawns application instances, and the role of ServiceManager and SystemServer in bringing the Android system to a ready state.
A comprehensive overview of common Linux daemon processes, detailing each service’s purpose, typical use cases, and key configuration notes for system administrators seeking to understand and manage background services effectively.
