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UNIXISM

Of consoles and blinking cursors

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 * About Unixism
 * Lord of the io_uring


USING SIGNALFD AND PIDFD TO MAKE SIGNALS LESS PAINFUL UNDER LINUX

Anyone introduced to Unix programming gets to marvel at the clever construct of
signals. In the life-cycle of a process, fortune and misfortune are present in
good measure. Signals allow the operating system to tell the process about the
occurrence of various events like the execution of illegal CPU instructions, a
user typing and thus… Continue reading Using signalfd and pidfd to make signals
less painful under Linux

Published February 27, 2021
Categorized as Linux, Network Programming, Unix Tagged pidfd, signalfd, signals


GETTING A PDF VERSION OF THE POSIX STANDARD DOCUMENT

As of writing this article, the latest POSIX standard was published in 2018.
However, the confusion starts with the name itself. First off, let’s examine the
many names that POSIX has. Let’s first look at what Wikipedia has to say on the
subject: IEEE Std 1003.1-2017 (Revision of IEEE Std 1003.1-2008) – IEEE Standard
for… Continue reading Getting a PDF version of the POSIX standard document

Published July 29, 2020
Categorized as Unix Tagged posix, unix


INSTALLING NEOVIM ON NETBSD

I have a certain Vim setup with Neovim being my choice of Vim. I’ve been playing
around with NetBSD recently, but I did not find a stable package available for
Neovim in the official package repositories. When I went about building it
however, I faced a couple of challenges. I thought it might be a… Continue
reading Installing Neovim on NetBSD

Published July 20, 2020
Categorized as NetBSD Tagged neovim, netbsd


PIPES AND PROCESS GROUPS

Source code for this tidbit is available at the Linux Tidbits repo here.

Published June 15, 2020
Categorized as Linux Tagged linux, pipes, process groups, unix


CONTAINERS THE HARD WAY: GOCKER: A MINI DOCKER WRITTEN IN GO

They are popular and they are misunderstood. Containers have become the default
way applications are packaged and run on servers, initially popularized by
Docker. Now, Docker itself is misunderstood. It is the name of a company and a
command (a suite of commands, rather) that allow you to manage containers
(create, run, delete, network) easily.… Continue reading Containers the hard
way: Gocker: A mini Docker written in Go

Published June 13, 2020
Categorized as Docker, Linux, Network Programming Tagged cgroups, containers,
docker, linux, namespaces


WHAT KIND OF TRAFFIC DOES HACKER NEWS GENERATE?

Every single post on this blog you’re now reading has done well on Hacker News.
This generates a lot of back-links and also results in a lively discussion on
the comments section from where I’ve learned a lot. Knowing that there is an
audience for the stuff you write is a great feeling. One question… Continue
reading What kind of traffic does Hacker News generate?

Published May 17, 2020
Categorized as Writing Tagged analytics, hacker news, writing


IO_URING BY EXAMPLE: AN ARTICLE SERIES

io_uring is a clever new, high-performance interface for asynchronous I/O for
Linux without the drawbacks of the aio set of APIs. In this 3-part article
series, we look at how to use io_uring to get the most common programming tasks
done under Linux. We write a series of programs of increasing complexity to
slowly but… Continue reading io_uring By Example: An Article Series

Published April 5, 2020
Categorized as Linux, Performance


IO_URING BY EXAMPLE: PART 3 – A WEB SERVER WITH IO_URING

This article is a part of a series on io_uring Series introduction Part 1:
Introduction to io_uring. In this article we create cat_uring based on the raw
io_uring interface and cat_liburing, built on the higher level liburing. Part 2:
Queuing multiple operations: We develop a file copying program, cp_liburing
leveraging multiple requests with io_uring. Part… Continue reading io_uring By
Example: Part 3 – A Web Server with io_uring

Published April 5, 2020
Categorized as Linux, Performance


IO_URING BY EXAMPLE: PART 2 – QUEUING MULTIPLE REQUESTS

This article is a part of a series on io_uring Series introduction Part 1:
Introduction to io_uring. In this article we create cat_uring based on the raw
io_uring interface and cat_liburing, built on the higher level liburing. Part 2:
This article. Part 3: A web server written using io_uring. In part 1, we saw
how… Continue reading io_uring By Example: Part 2 – Queuing multiple requests

Published April 5, 2020
Categorized as Linux, Performance


IO_URING BY EXAMPLE: PART 1 – INTRODUCTION

This article is a part of a series on io_uring Series introduction Part 1: This
article. Part 2: Queuing multiple operations: We develop a file copying program,
cp_liburing leveraging multiple requests with io_uring. Part 3: A web server
written using io_uring. Introduction Come to think about it, I/O, along with
compute are the only two… Continue reading io_uring by example: Part 1 –
Introduction

Published April 5, 2020
Categorized as Linux, Performance Tagged async, asynchronous programming,
io_uring, linux


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