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NEWS 》 Weekly News Digest - Week 8 - February 2018

Asymmetric Processor Cores
Most Intel processors use one of two cores, the main-line core and the Atom core. Desktop processors might use the newer Kaby Lake or Coffee Lake micro-architecture cores, while the Xeon SP lines uses the previous generation Skylake micro-architecture. All of these are part of the main core line. The Atom core is used in Xeon Phi, Atom and some Pentium or Celeron processors. In simple terms, the main-line is a big core and the Atom is a small core... Read More



Using QCT Quanta LB6M 10GbE Switch for Container Networking
Quanta LB6M is everywhere, yet you won’t find it on Quanta’s website. That’s because it’s not sold to end users, it is an early hyper-scale switch based on the Scorpion chipset. It’s the first 10 GBit/s merchant silicon chipset used by Google and probably others in the development of their large-scale networks... Read More


Watch on Youtube - x226 Linux Kernel Tasklets | Big-Picture | vs User-Space pth... ↗

Using SSE Instead Of WebSockets For Unidirectional Data Flow Over HTTP/2
When building a web application, one must consider what kind of delivery mechanism they are going to use... Read More


Watch on Youtube - x226 Linux Kernel Tasklets | Big-Picture | vs User-Space pth... ↗

Why IPv6 networks create DNS configuration problems
DNS data is among the most basic and crucial information required for network connectivity, but configuring DNS recursive servers in IPv6-only networks can pose challenges... Read More


Hypervisor or containers: Which solution is right for you?
There are a lot of considerations to make when using virtualization technologies. Finding a solution which balances performance and security can be challenging... Read More


Watch on Youtube - x22c Linux Kernel Programming | likely() & unlikely() ↗

Blockchain for 2018 and Beyond: A (growing) list of blockchain use cases
The blockchain process of transacting and storing information on a decentralized, distributed ledger yields many benefits for enterprise application data... Read More


Raw sockets backdoor gives attackers complete control of some Linux servers
A stealthy backdoor undetected by antimalware providers is giving unknown attackers complete control over at least 100 Linux servers that appear to be used in business production environments, warn researchers... Read More



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Featured Video:
Watch on Youtube - 352 Linux user-space - Shared Memory IPC - Live Demo and Exa ↗

Raspberry Pi OS with PIXEL ↗
Saturday' 13-Mar-2021

Programming Language Performance and Overheads ↗
Saturday' 13-Mar-2021
A detailed Youtube video series of various programming language performance and overheads - a big picture

What is a Linux Kernel Module - a Big Picture ↗
Saturday' 13-Mar-2021
Learning Linux Kernel Programming is always fascinating and yet challenging. So generally you may tend to learn Kernel Module programming, since such a module can be dynamically plugged into running Linux Kernel. But this will lead to confusion, and many assume kernel source is mostly a collection of these modules. Which in reality is not. Not just that, when we say Kernel Module, its a vaguely defined term. The term Module (as we know) is nothing but a collection of APIs, bunch of variables and associated data-structures. Which may or may not be a plugable kernel module. If you ask me, I am a fan of wiring Linux Kernel Modules, which may not be necessarily a pluggable kernel module. It all boils down to the address space at which these modules function inside a monolithic Linux Kernel. Which is nothing but Linux Kernel's address space. Hence here is my detailed multi-episode Youtube video series on Linux Kernel modules, a big picture and the significance of the

Linux Kernel Programming | with or without Kernel Modules | Device Drivers ↗
Saturday' 13-Mar-2021
When learning Linux Kernel programming, often I notice my students and viewers gets confused and they start with learning writing Linux Kernel modules. And so they develop the common misconception about Kernel Programming in general. They assume writing code in Linux Kernel means writing kernel modules. Which is absolutely not. Kernel modules are an optional choice and are part of Linux Kernel. But besides modules, Linux Kernel has lot of other mainstream code. Hence if anyone wants to be a Kernel Developer, you should be aware that sometimes you add new code via modules, sometimes without them. And if you ask me, I am not much in favor of writing Kernel modules. Instead in my code, I try to integrate and make them a part of Linux Kernel so that they all get initialized during boot time. Here is an extensive Youtube video of mine on Linux Kernel Programming, with and without Kernel Modules.

Weekly News Digest - Week 03 - June 2020 ↗
Saturday' 13-Mar-2021
The Linux Channel :: Weekly News Digest - Week 03 - June 2020 > Kimχ Micro: A powerful alternative to the Raspberry Pi that supports PCIe cards > Linux Lands And Then Reverts Usage Of Flexible Array Members > AMD Ryzen 4000-Powered Asus Mini PC Challenges Intel's NUC > Aaeon's Raspberry Pi-like Board Bears An Intel 8th Gen Core i7 CPU and 16GB of DDR4 > Linus Torvalds Announces Massive Linux Kernel 5.8 Update > New Cisco Cloud Scale ASIC & 400G Line Card Announced > Key Differences of PoE vs PoE+ vs PoE++ Switches a STH Guide

CEO, CTO Talk ↗
Saturday' 13-Mar-2021

TCP vs UDP an Expert Opinion ↗
Saturday' 13-Mar-2021

Weekly News Digest - Week 5 - February 2018 ↗
Saturday' 13-Mar-2021
> Mini-ITX board fosters flexibility and fights obsolescence > You Can Do Better Than Arduino: Try These Microcontrollers > Open source is 20: How it changed programming and business forever > Since computer technology evolves so rapidly, does it matter if you have 5 or 15 years of experience as e.g. software developer? > Linux Kernel net_device data-structure - possible_net_t nd_net - Network namespace and Linux Containers - Ep7 > New Wave of Mini Satellites Could Boost Climate Research > Here come all the AI deployments; Now how do we manage AI? > Imagination announces neural network acceleration push

How to start Open-Source Project ↗
Saturday' 13-Mar-2021

Weekly News Digest - Week 8 - February 2018 ↗
Saturday' 13-Mar-2021
> Asymmetric Processor Cores > Using QCT Quanta LB6M 10GbE Switch for Container Networking > Using SSE Instead Of WebSockets For Unidirectional Data Flow Over HTTP/2 > Why IPv6 networks create DNS configuration problems > Hypervisor or containers: Which solution is right for you? > Blockchain for 2018 and Beyond: A (growing) list of blockchain use cases > Raw sockets backdoor gives attackers complete control of some Linux servers


Trending Video:
Watch on Youtube - x22f Linux Kernel Network Drivers - Classification ↗

Circular Ring Buffers Architecture - Linux Kernel - Device Drivers - Network Stack ↗
Saturday' 13-Mar-2021
A circular buffer, circular queue, cyclic buffer or ring buffer is a data structure is a fixed-size buffer as if it were connected end-to-end or can be a dynamic one if implemented via Linked Lists. This is a data-structure quite popularly used in many parts of Linux Kernel such as Device Drivers, especially Network Hardware drivers, Network Packet Buffer such as sk_buff and so on. We can use a Ring Buffer in user-space application programming too. These kind of buffers are more suited for holding steady stream of incoming data. For example Network Packets. If the buffer gets full, we can discard the oldest buffer elements (such as packets). And to avoid we can increase the buffer size. So circular ring buffers plays a major role especially in Network Appliances such as Routers, Firewalls, etc.



Recommended Video:
Watch on Youtube - x224 Linux Kernel Dummy Network Interface /drivers/net/dummy... ↗