What is a Swap File and How does It Work

A swap file is a disk space used when RAM is full, allowing virtual memory systems to manage memory effectively. It aids performance but can impact speed, especially under memory pressure.

Compiler Optimizations from O0 to Oz

The article by Yashwanth Naidu Tikkisetty explores various compiler optimization options, detailing their effects and uses. It provides an overview of how different options can influence the optimization process and performance of compiled code. By explaining the mechanisms behind these optimizations, the article aims to demystify the complexities of compiler settings for readers. The resource includes a linked PDF for a deeper dive into the topic, as well as a LinkedIn post for additional engagement. Overall, it serves as a valuable guide for understanding and navigating compiler optimizations effectively.

Loop Unrolling in RISC-V

Loop unrolling significantly enhances performance in embedded systems, particularly in RISC-V architectures. By reducing loop overhead and increasing instruction-level parallelism, it minimizes control operations. However, this technique increases code size, necessitating careful consideration for systems with memory constraints.

Data Hazard Stalls in Cache Memory

In the realm of computer architecture, particularly in the context of embedded systems, data hazard stalls are a critical challenge that can significantly impact the performance and efficiency of a system. This write up aims to dissect the concept of data hazard stalls, particularly in cache memory, using RISC-V assembly code examples to illustrate the […]

Pipelining in Cache Memory

𝗣𝗶𝗽𝗲𝗹𝗶𝗻𝗶𝗻𝗴 𝗶𝗻 the context of 𝗰𝗮𝗰𝗵𝗲 𝗺𝗲𝗺𝗼𝗿𝘆 is a critical concept in modern computing architectures, playing a pivotal role in enhancing the performance and efficiency of systems. It refers to the process of arranging the execution of commands in a way that overlaps different stages of instruction execution. This technique, when applied to cache memory, involves […]

Cache Replacement Policies

At the heart of every high-performing embedded system lies a well-oiled cache memory mechanism, silently dictating the efficiency and responsiveness of the technology we rely on daily. Cache replacement policies, often overlooked, are the unsung heroes in this scenario, subtly but significantly influencing system performance. From wearables to aerospace, these policies are the architects of […]

Interrupt Latency: The Sleeping Dragon of Embedded Systems

Interrupt latency in embedded systems is the time from when an interrupt occurs to when the corresponding ISR executes. High latency can jeopardize real-time functionality in critical applications like airbag deployment. Factors affecting latency include priority levels, CPU cycles, and context switching. Optimizing ISRs and utilizing low-latency processors can mitigate this issue.

WHAT THE FU*K

The Fast Inverse Square Root line of code, ‘i = 0x5f3759df – (i >> 1);’, revolutionized graphics processing in the 90s by efficiently calculating 1/sqrt(x) through bit manipulation and approximation. It exemplified creative programming, significantly enhancing game performance and remains a celebrated part of programming lore and hacker culture.

What is Context Switching

The article explains context switching and details the roles of the scheduler and kernel during the process. It highlights how efficient context switching is crucial for multitasking in operating systems, allowing multiple processes to share system resources seamlessly. For further insights, the article is available in PDF format.

𝑪𝒂𝒄𝒉𝒆 𝑾𝒓𝒊𝒕𝒆 𝑻𝒉𝒓𝒐𝒖𝒈𝒉 𝒂𝒏𝒅 𝑪𝒂𝒄𝒉𝒆 𝑾𝒓𝒊𝒕𝒆 𝑩𝒂𝒄𝒌

Modern computing relies on the efficient interaction of components, particularly involving cache memory. This article explores the Write-Through and Write-Back strategies, detailing their operations, benefits, and drawbacks. Understanding these mechanisms enhances knowledge of the performance dynamics that underpin today’s digital environments.