Paging & Page Tables
Understanding how paging divides memory into fixed-size pages, how page tables track virtual-to-physical mappings, and how the TLB accelerates address translation.
Posts in technical
Performance Profiling
Master Linux performance profiling with perf, ftrace, BCC tools, and flame graphs to identify and eliminate kernel bottlenecks.
Pipes & Named Pipes (FIFO)
Learn how anonymous pipes connect related processes and named pipes (FIFOs) enable communication between unrelated processes in Unix/Linux systems.
Process Concept
A deep dive into process states, Process Control Block (PCB) architecture, and the mechanics of process creation in modern operating systems.
Process Scheduling
Understanding OS schedulers, scheduling algorithms, and the critical mechanism of context switching that enables multiprogramming.
Process Scheduling Algorithms
A comprehensive guide to CPU scheduling algorithms including FCFS, SJF, Round Robin, Priority scheduling, and multi-level feedback queues.
Readers-Writer Locks
Shared vs exclusive access, read-preferring vs write-preferring variants
Real-Time Operating Systems
Understand RTOS concepts, scheduling guarantees, latency bounds, and the PREEMPT_RT patch for achieving real-time Linux.
SELinux & AppArmor
Mandatory Access Control (MAC), security policies, and label-based enforcement in Linux
Semaphores & Condition Variables
Counting semaphores, producer-consumer problem, and CV signaling