Go Scheduler
Go Scheduler Contents Introduction Compilation and Go Runtime Primitive Scheduler Scheduler Enhancement GMP Model Program Bootstrap Creating a Goroutine Schedule Loop Finding a Runnable Goroutine Goroutine Preemption Handling System Calls Network I/O and File I/O How netpoll Works Garbage Collector Common Functions Go Runtime APIs Disclaimer This blog post primarily focuses on Go 1.24 programming
The following content is from my #til github. Source: https://github.com/leandromoreira/linux-network-performance-parameters/https://access.redhat.com/sites/default/files/attachments/20150325_network_performance_tuning.pdfhttps://www.coverfire.com/articles/queueing-in-the-linux-network-stack/https://blog.cloudflare.com/how-to-achieve-low-latency/https://blog.cloudflare.com/how-to-receive-a-million
Go: A Documentary
The historical release notes may helpful for general information: doc/go1release Go Release History doc/go1prerelease Pre-Go 1 Release History doc/go0release Weekly Release History (Before Go 1) Language Design General design/go0initial Rob Pike, Robert Griesemer, Ken Thompson. The Go Annotated Specification. Mar 3, 2008. design/go0spec0 The Go Programming Language. Language Specification. Mar 7,
技術部の笹田（ko1）と遠藤（mame）です。クックパッドで Ruby (MRI: Matz Ruby Implementation、いわゆる ruby コマンド) の開発をしています。お金をもらって Ruby を開発しているのでプロの Ruby コミッタです。 昨日 12/25 に、恒例のクリスマスリリースとして、Ruby 3.2.0 がリリースされました（Ruby 3.2.0 リリース）。今年も Ruby 3.2 の NEWS.md ファイルの解説をします。NEWS ファイルとは何か、は以前の記事を見てください。 プロと読み解く Ruby 2.6 NEWS ファイル - クックパッド開発者ブログ プロと読み解くRuby 2.7 NEWS - クックパッド開発者ブログ プロと読み解くRuby 3.0 NEWS - クックパッド開発者ブログ プロと読み解く Ruby 3.1 NEWS -
Sapling: Source control that’s user-friendly and scalable
Sapling is a new Git-compatible source control client. Sapling emphasizes usability while also scaling to the largest repositories in the world. ReviewStack is a demonstration code review UI for GitHub pull requests that integrates with Sapling to make reviewing stacks of commits easy. You can get started using Sapling today. Source control is one of the most important tools for modern developers,
GitHub - modelcontextprotocol/servers: Model Context Protocol Servers
Official integrations are maintained by companies building production ready MCP servers for their platforms. 21st.dev Magic - Create crafted UI components inspired by the best 21st.dev design engineers. 2slides - An MCP server that provides tools to convert content into slides/PPT/presentation or generate slides/PPT/presentation with user intention. ActionKit by Paragon - Connect to 130+ SaaS inte
プロと読み解くRuby 4.0 NEWS テクノロジー部門技術推進グループの笹田（ko1）と遠藤（mame）です。Ruby (MRI: Matz Ruby Implementation、いわゆる ruby コマンド) の開発をしています。お金をもらって Ruby を開発しているのでプロの Ruby コミッタです。 本日 12/25 に、恒例のクリスマスリリースとして、Ruby 4.0.0 がリリースされました（Ruby 4.0.0 リリース | Ruby）。今年も STORES Product Blog にて Ruby 4.0 の NEWS.md ファイルの解説をします（ちなみに、STORES Advent Calendar 2025 の記事になります。他も読んでね）。NEWS ファイルとは何か、は以前の記事を見てください。 プロと読み解く Ruby 2.6 NEWS ファイル - クック
Note: As of 2022/10/25 the information in this series is slightly outdated. See Part 5 for more up to date information. The Car⌗ Last summer I bought a 2021 Hyundai Ioniq SEL. It is a nice fuel-efficient hybrid with a decent amount of features like wireless Android Auto/Apple CarPlay, wireless phone charging, heated seats, & a sunroof. One thing I particularly liked about this vehicle was the In-V
Peter Jay Salzman, Michael Burian, Ori Pomerantz, Bob Mottram, Jim Huang 1 Introduction 1.1 Authorship 1.2 Acknowledgements 1.3 What Is A Kernel Module? 1.4 Kernel module package 1.5 What Modules are in my Kernel? 1.6 Is there a need to download and compile the kernel? 1.7 Before We Begin 2 Headers 3 Examples 4 Hello World 4.1 The Simplest Module 4.2 Hello and Goodbye 4.3 The __init and __exit Mac
NETGEAR社製ルーターにおける認証不要の任意コード実行の技術的解説(PSV-2022-0044) - GMO Flatt Security Blog
※本記事は先立って公開された英語版記事を翻訳し、日本語圏の読者向けに一部改変したものです。 画像出典: https://www.netgear.com/business/wifi/access-points/wac124/ はじめに こんにちは、株式会社Flatt Securityのstypr(@stereotype32)です。 一昨年、日本のOSS製品で発見された0day脆弱性に関する技術解説をブログに書きました。 それ以来、私は様々な製品に多くの脆弱性を発見してきました。残念ながら私が見つけたバグのほとんどはすぐに修正されなかったので、今日まで私が見つけた、技術的に興味深い脆弱性の情報を共有する機会がありませんでした。 本記事では、NETGEAR社のWAC124(AC2000)ルーターにおいて、様々な脆弱性を発見し、いくつかの脆弱性を連鎖させて、前提条件なしに未認証ユーザーの立場からコ
The first Asahi Linux Alpha Release is here! - Asahi Linux
It’s been a long while since we updated the blog! Truth be told, we wanted to write a couple more progress reports, but there was always “one more thing”… So, instead, we decided to take the plunge and publish the first public alpha release of the Asahi Linux reference distribution! We’re really excited to finally take this step and start bringing Linux on Apple Silicon to everyone. This is only t
Amazon Linux 2023 – 長期サポート付きのクラウド最適化 Linux ディストリビューション | Amazon Web Services
Amazon Web Services ブログ Amazon Linux 2023 – 長期サポート付きのクラウド最適化 Linux ディストリビューション Amazon Linux 2023 (AL2023) の一般提供の開始をお知らせします。AWS は 2010 年以来、クラウド最適化 Linux ディストリビューションを提供してきました。これは、当社の第 3 世代の Amazon Linux ディストリビューションです。 どの世代の Amazon Linux ディストリビューションもセキュリティで保護され、クラウド向けに最適化されており、長期的な AWS サポートを受けることができます。当社では、Amazon Linux 2023 をこれらの原則に基づいて構築し、さらに発展させています。Amazon Linux 2023 でワークロードをデプロイすると、高度なセキュリティ基準、予測可
Hello everyone, Asahi Lina here!✨ marcan asked me to write an article about the M1 GPU, so here we are~! It’s been a long road over the past few months and there’s a lot to cover, so I hope you enjoy it! What’s a GPU?You probably know what a GPU is, but do you know how they work under the hood? Let’s take a look! Almost all modern GPUs have the same main components: A bunch of shader cores, which
ストレージの暗号化は実施して当然のセキュリティ対策のひとつとなりつつあります。一般的なスマートフォンであればほぼ暗号化された状態ですし、WindowsやmacOSでも暗号化するための設定が用意されています。たとえばWindowsの場合、PCの購入時点で暗号化がオンになっているケースもあります。サーバーも用途によっては暗号化したい場合もあるでしょう。 ここで問題になるのが、どのようにしてストレージ復号用のパスフレーズを入力するのか、です。今回はUbuntuのルートファイルシステムを暗号化した上で、起動時にリモートからSSH経由でストレージの復号する方法を紹介しましょう。 ストレージ暗号化における復号の手間と意味 Ubuntu自体は10年以上前から、インストール時にストレージを暗号化するオプションが提供されていました。現在はその手法としてLVMとLUKSを利用したLinuxにおける一般的な暗号
今回はStarFive Technology製のRISC-Vシングルボードコンピューター（SBC）であるVisionFive 2にDebianをインストールして、その性能を計測してみましょう。 RISC-VとVisionFive 2 RISC-V（りすく・ふぁいぶ）は今もっとも熱い命令セットアーキテクチャーです。2010年頃に生まれたRISC-Vは、オープンな規格という強みを活かしてどんどんエコシステムを構築し、今では様々な企業がRISC-Vに本格的に手を出す状況になっています。AMD64/Intel 64やARMには性能も普及度合いもまだまだ及びませんが、今の勢いを維持できれば近い将来その状況は変わってくるでしょう。 本連載でも2018年ぐらいから、RISC-Vの記事を何度か取り上げていました。 第505回：「オープン規格の新しい命令セットアーキテクチャRISC-V入門 ツールチェインを
I've found that one of the best ways to understand a new concept is to start from the very beginning. Start from a place where it doesn't exist yet and recreate it yourself, learning in the process not just how it works, but why it was designed the way it was. This isn't a practical guide to async, but hopefully some of the background knowledge it covers will help you think about asynchronous prob
Exactly twenty years ago, on April 7, 2005, Linus Torvalds made the very first commit to a new version control system called Git. Torvalds famously wrote Git in just 10 days after Linux kernel developers lost access to their proprietary tool, BitKeeper, due to licensing disagreements. In fact, in that first commit, he’d written enough of Git to use Git to make the commit! Git’s unconventional and
Best Linux Commands For Advanced Hardware and System Info
Photo by Nathan Anderson / Unsplash Sometimes you need info about hardware, and you probably lost your invoice, spec list or a password to a store website. Maybe you did an upgrade and this info isn't accurate anymore. It's an easy case for home users, but what to do is you have many machines in a corporate environment? The commands below will also be useful for hardware debug. Uname - Linux kerne
Raspberry Pi 3 Fastboot - Less Than 2 Seconds - Bir Coder'ın Günlüğü
Bu yazıyı Türkçe oku.|Read the post in Turkish. This post tells about my journey of fast-booting a Raspberry Pi 3 (RPI). In addition to that, some optimizations are discussed that can be applied to a Qt (QML) application. In the end, we will have a RPI that boots from power-up to Linux shell in 1.75 seconds, power-up to Qt (QML) application in 2.82 seconds. Edit : There are requests for a demo ima
Update 1.69.1: The update addresses these issues. Update 1.69.2: The update addresses these issues. Downloads: Windows: x64 Arm64 | Mac: Universal Intel silicon | Linux: deb rpm tarball Arm snap Welcome to the June 2022 release of Visual Studio Code. There are many updates in this version that we hope you'll like, some of the key highlights include: 3-way merge editor - Resolve merge conflicts wit
No-Panic Rust: A Nice Technique for Systems Programming
Can Rust replace C? This is a question that has been on my mind for many years, as I created and now am tech lead for upb, a C library for Protocol Buffers. There is an understandable push to bring memory safety to all parts of the software stack, and this would suggest a port of upb to Rust. While I love the premise of Rust, I have long been skeptical that a port of upb to Rust could preserve the
Improving NGINX Performance with Kernel TLS and SSL_sendfile( )
* Kernel version must be 5.10, not 4.14; see OSs That Do Not Support kTLS and the Amazon Linux 2 FAQ ** Inherits its kTLS support status from RHEL 8 as its upstream source *** See the FreeBSD commit log OSs That Do Not Support kTLSThe following OSs do not support kTLS, for the indicated reason: Alpine Linux 3.11–3.14 – Kernel is built with the CONFIG_TLS=n option, which disables building kTLS as a
Introduction to Go 1.21 The latest Go release, version 1.21, arrives six months after Go 1.20. Most of its changes are in the implementation of the toolchain, runtime, and libraries. As always, the release maintains the Go 1 promise of compatibility; in fact, Go 1.21 improves upon that promise. We expect almost all Go programs to continue to compile and run as before. Go 1.21 introduces a small ch
Why GitHub Actually Won
A few days ago, a video produced by @t3dotgg was posted to his very popular YouTube channel where he reviews an article written by the Graphite team titled “How GitHub replaced SourceForge as the dominant code hosting platform”. Theo’s title was a little more succinct, “Why GitHub Won”. Being a cofounder of GitHub, I found Greg’s article and Theo’s subsequent commentary fun, but figured that it mi
AST vs. Bytecode: Interpreters in the Age of Meta-Compilation
233 AST vs. Bytecode: Interpreters in the Age of Meta-Compilation OCTAVE LAROSE, University of Kent, UK SOPHIE KALEBA, University of Kent, UK HUMPHREY BURCHELL, University of Kent, UK STEFAN MARR, University of Kent, UK Thanks to partial evaluation and meta-tracing, it became practical to build language implementations that reach state-of-the-art peak performance by implementing only an interprete
Join a VS Code Dev Days event near you to learn about AI-assisted development in VS Code. Update 1.67.1: The update addresses this security issue. Update 1.67.2: The update addresses these issues. Downloads: Windows: x64 Arm64 | Mac: Universal Intel silicon | Linux: deb rpm tarball Arm snap Welcome to the April 2022 release of Visual Studio Code. There are many updates in this version that we hope
Version 1.108 is now available! Read about the new features and fixes from December. Release date: June 12, 2025 Security update: The following extension has security updates: ms-python.python. Update 1.101.1: The update addresses these issues. Update 1.101.2: The update addresses these issues. Downloads: Windows: x64 Arm64 | Mac: Universal Intel silicon | Linux: deb rpm tarball Arm snap Welcome t
Amazon Linux 2023, a Cloud-Optimized Linux Distribution with Long-Term Support | Amazon Web Services
AWS News Blog Amazon Linux 2023, a Cloud-Optimized Linux Distribution with Long-Term Support 11/17/2025 Update: Amazon Linux 2 end of support date (End of Life, or EOL) has been extended to 2026-06-30. I am excited to announce the general availability of Amazon Linux 2023 (AL2023). AWS has provided you with a cloud-optimized Linux distribution since 2010. This is the third generation of our Amazon
Linux is an operating system, similar to Windows, but with many different versions due to the nature of being open source and fully customizable. To install Linux, you must choose an install method and choose a Linux distribution. To install Linux: Choose an install method: Windows Subsystem for Linux (WSL), Bare metal Linux; or create a Virtual Machine (VM) to run Linux locally or in the cloud. C
Rust Web Development
This article is part of a chapter of Rust Web Development which didn't make the cut to be in the book. TL;DR When we talk about a web service, we, more often than not, mean deployed code which listens on a certain IP address and port and responds to HTTP messages. There are many steps involved for two parties to be able to communicate with each other. Application developers are mainly confronted w
OpenZFS deduplication is good now and you shouldn't use it
OpenZFS 2.3.0 will be released any day now, and it includes the new “Fast Dedup” feature. My team at Klara spent many months in 2023 and 2024 working on it, and we reckon it’s pretty good, a huge step up from the old dedup as well as being a solid base for further improvements. I’ve been watching various forums and mailing lists since it was announced, and the thing I kept seeing was people saying
Over the course of my Spring 2020 semester at Harvey Mudd College, I developed a self-hosting compiler entirely from scratch. This article walks through many interesting parts of the project. It’s laid out so you can just read from beginning to end, but if you’re more interested in a particular topic, feel free to jump there. Or, take a look at the project on GitHub. Table of contents What the pro
OpenWrtへのサプライチェーン攻撃 - SHA-256の脆弱な取り扱いとコマンドインジェクションによるファームウェアアップデートの侵害 - GMO Flatt Security Blog
※本記事は筆者RyotaKが英語で執筆した記事を、弊社セキュリティエンジニアryotaromosaoが日本語に翻訳したものになります。 はじめに こんにちは、Flatt SecurityでセキュリティエンジニアをしているRyotaK (@ryotkak)です。 数日前、自宅のネットワークをアップグレードする際に、ルーターのOpenWrtを更新することにしました1。OpenWrtのWebインターフェースであるLuCIにアクセスしたところ、Attended Sysupgradeというセクションがあることに気付き、これを使ってファームウェアをアップグレードしてみることにしました。 機能説明を読んでみると、この機能はオンラインサービスを利用して新しいファームウェアをビルドする、と書かれていました。 どういう仕組みになっているのかがとても気になったため、当該機能を調査することにしました。 sysup
Introduction to Go 1.25 The latest Go release, version 1.25, arrives in August 2025, six months after Go 1.24. Most of its changes are in the implementation of the toolchain, runtime, and libraries. As always, the release maintains the Go 1 promise of compatibility. We expect almost all Go programs to continue to compile and run as before. Changes to the language There are no languages changes tha
Join a VS Code Dev Days event near you to learn about AI-assisted development in VS Code. Update 1.70.1: The update addresses these issues. Update 1.70.2: The update addresses these issues. Update 1.70.3: This update is only available for Windows 7 users and is the last release supporting Windows 7. Downloads: Windows: x64 Arm64 | Mac: Universal Intel silicon | Linux: deb rpm tarball Arm snap Welc
1. はじめに 2019年1月に「Let’s EncryptによるSSLサーバー証明書の取得、自動更新設定（2019年1月版）」という記事を書きました。 最近、証明書を取得、更新するためのcertbotコマンドの推奨インストール方法が変わりましたので、2021年3月版としてまとめ直します。 なお、以下の設定手順は、サーバーOSはCentOS 7で、2021年3月時点のものです。 Apache, Nginxについては、Let’s Encryptに関わる設定のみ記載し、Let’s Encryptに無関係な基本的な設定は、ここでは記載しません。 コマンドはrootユーザーで実行する想定です。 必要に応じて、sudoに置き換えてください。 （参考） ・Certbotのユーザーガイド https://certbot.eff.org/docs/using.html ・Let’s Encrypt で証明
I’ve become convinced that “little languages”–small languages designed to solve very specific problems–are the future of programming, particularly after reading Gabriella Gonzalez’s The end of history for programming and watching Alan Kay’s Programming and Scaling talk. You should go check them out because they’re both excellent, but if you stick around I’ll explain just what I mean by “little lan
Version 1.108 is now available! Read about the new features and fixes from December. Release date: May 8, 2025 Update: Enable Next Edit Suggestions (NES) by default in VS Code Stable (more...). Update 1.100.1: The update addresses these security issues. Update 1.100.2: The update addresses these issues. Update 1.100.3: The update addresses these issues. Downloads: Windows: x64 Arm64 | Mac: Univers
A Git story: Not so fun this time | Brachiosoft Blog
Linus Torvalds once wrote in a book that he created Linux just for fun, but it ended up sparking a revolution. Git, his second major creation, was also an accidental revolution. It’s now a standard tool for software engineers, but its origin story wasn’t so much fun this time, at least for Linus. Linus doesn’t scale 1998 was a big year for Linux. Major companies like Sun, IBM, and Oracle started g
OpenBSD is an operating system that's famous for its focus on security. Unfortunately, OpenBSD leader Theo states that there are only 7000 users of OpenBSD. So it's a very small but elite group, that wields a disproportionate influence; since we hear all the time about the awesome security features these guys get to use, even though we usually can't use them ourselves. Pledge is like the forbidden
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Linux Network Performance Ultimate Guide
プロと読み解く Ruby 3.2 NEWS - クックパッド開発者ブログ
プロと読み解くRuby 4.0 NEWS - STORES Product Blog
How I Hacked my Car
The Linux Kernel Module Programming Guide
Tales of the M1 GPU - Asahi Linux
第831回 暗号化されたUbuntuのルートファイルシステムをリモートから復号する方法 | gihyo.jp
第752回 RISC-VのシングルボードコンピューターであるVisionFive 2を使ってみる | gihyo.jp
Learning Async Rust With Entirely Too Many Web Servers
Git turns 20: A Q&A with Linus Torvalds
June 2022 (version 1.69)
Go 1.21 Release Notes - The Go Programming Language
April 2022 (version 1.67)
May 2025 (version 1.101)
How to download and install Linux
Kalyn: a self-hosting compiler for x86-64
Go 1.25 Release Notes - The Go Programming Language
July 2022 (version 1.70)
Let’s EncryptによるSSLサーバー証明書の取得、自動更新設定（2021年3月版）
Little Languages Are The Future Of Programming
April 2025 (version 1.100)
Porting OpenBSD pledge() to Linux