Awesome Dev Tool Tips 🔥
Contents (Click to expand) ↕️ Design Mode Pretty Print Command Pallet and Super Search Snippets Live Expressions Tracking Changes Console Shorthand Find Unused Code Rendering Panel Network Paint Times Network Timings Inspect Network Requests Performance Identifying Memory Leaks Raw Memory Inspection Test bfcache Full Refresh Lighthouse Page Size Breakdown Record User Flows Advanced User Flow Opera
BPF Performance Toolsを読んだので、感想ブログです。 先に感想を言っておくと「最高」でした。 BPF Performance Toolsとは？ NetflixでKernel・パフォーマンスにかかわるチューニング・アーキテクチャを専門にしているBrendan Greggさんが書いた本です。BPFのiovisorというTracing分野の第一人者でもあります。 www.brendangregg.com 2019年12月に発売したばかりなので、BPFの分野では最新の本でしょう。他の著書に有名な本として(日本語版の)「詳解システム・パフォーマンス」があります。 BPF Performance Toolsは「詳解システム・パフォーマンス」第二弾と言えるかもしれません。ちなみにページ数は880Pあり、Kindleで表示される読み終わるための平均的な時間は「27時間30分」で、大作R
Linux perf Examples
Recent posts: 24 Mar 2024 » Linux Crisis Tools 17 Mar 2024 » The Return of the Frame Pointers 10 Mar 2024 » eBPF Documentary 28 Apr 2023 » eBPF Observability Tools Are Not Security Tools 01 Mar 2023 » USENIX SREcon APAC 2022: Computing Performance: What's on the Horizon 17 Feb 2023 » USENIX SREcon APAC 2023: CFP 02 May 2022 » Brendan@Intel.com 15 Apr 2022 » Netflix End of Series 1 09 Apr 2022 » Te
Go: A Documentary
Go: A Documentary by Changkun Ou <changkun.de> (and many inputs from contributors) This document collects many interesting (publicly observable) issues, discussions, proposals, CLs, and talks from the Go development process, which intends to offer a comprehensive reference of the Go history. Disclaimer Most of the texts are written as subjective understanding based on public sources Factual and ty
EngineeringGit Credential Manager: authentication for everyoneEnsuring secure access to your source code is more important than ever. Git Credential Manager helps make that easy. Universal Git Authentication “Authentication is hard. Hard to debug, hard to test, hard to get right.” – Me These words were true when I wrote them back in July 2020, and they’re still true today. The goal of Git Credenti
Nov 10, 2020eBPF - The Future of Networking & Security Today is an exciting day for the Cilium community: Isovalent, the company behind Cilium, is announcing its $29M Series A financing round backed by Andreessen Horowitz, Google, and Cisco. This is a perfect occasion to take a deeper look into where eBPF-based networking is coming from and to understand what the excitement is all about. Two weeks
Microsoft Security Response Center（MSRC）は2019年9月30日（米国時間）、Microsoft社内におけるRust言語の採用事例を発表した。 「Azure IoT Edge」のセキュリティデーモンコンポーネントを実装するプログラミング言語として「Rust」を選択した背景と、実装過程で分かったメリットと課題が分かる。 Azure IoT Edgeは、MicrosoftのAzure IoTチームが手掛けるオープンソースのクロスプラットフォームソフトウェアプロジェクト。プロジェクトの目的は、クラウドからオンプレミスネットワーク内のエッジへとコンピューティング機能の分散を進め、管理する上での問題解決だ。 Azure IoT Edgeのセキュリティデーモンは、Azure IoT Edgeランタイムを起動（ブートストラップ）する。さらに、Azure IoTランタ
What's New In DevTools (Chrome 94) | Blog | Chrome for Developers
Use DevTools in your preferred language Chrome DevTools now supports more than 80 languages, allowing you to work in your preferred language! Open Settings, then select your preferred language under the Preferences > Language dropdown and reload DevTools. Preferences" width="800" height="494"> Chromium issue: 1163928 New Nest Hub devices in the Device list You can now simulate the dimensions of Ne
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
Linux Hardening Guide | Madaidan's Insecurities
Last edited: March 19th, 2022 Linux is not a secure operating system. However, there are steps you can take to improve it. This guide aims to explain how to harden Linux as much as possible for security and privacy. This guide attempts to be distribution-agnostic and is not tied to any specific one. DISCLAIMER: Do not attempt to apply anything in this article if you do not know exactly what you ar
Windows版「rm -rf /*」の「cmd /c rd /s /q c:\」を実行してみた | DevelopersIO
よい子(大人を含む)はマネしないでね。 この記事に書いてある内容を、自分が所有するPC以外（業務用PC、公共のPCなどで）で行った場合、 電子計算機損壊等業務妨害罪（刑法234条の2）に問われ、5年以下の懲役または100万円以下の罰金の可能性や損害賠償を求められる可能性があるらしいです。 Windows版「rm -rf /*」を実行してみたくなった つい先日、Amazon Linux 2でrm -rf /*を実行して、OSを破壊してみました。そちらの様子は以下記事をご参照ください。 Linuxを破壊してみると、何だか次はWindowsも破壊したくなってきました。 そこで、Windows Server 2019に対して、Windows版rm -rf /*と呼ばれるcmd /c rd /s /q c:\を実行してみて、どこまで壊れるのか確認してみます。 いきなりまとめ cmd /c rd /s
Data encryption at rest is a must-have for any modern Internet company. Many companies, however, don't encrypt their disks, because they fear the potential performance penalty caused by encryption overhead. Encrypting data at rest is vital for Cloudflare with more than 200 data centres across the world. In this post, we will investigate the performance of disk encryption on Linux and explain how w
linux-kernel.vger.kernel.org archive mirror help / color / mirror / Atom feed* Linux kernel in-tree Rust support @ 2020-07-09 18:41 Nick Desaulniers 2020-07-09 20:52 ` Miguel Ojeda ` (5 more replies) 0 siblings, 6 replies; 28+ messages in thread From: Nick Desaulniers @ 2020-07-09 18:41 UTC (permalink / raw) To: alex.gaynor, geofft, jbaublitz, Masahiro Yamada, Linus Torvalds, Greg KH, Miguel Ojeda
Opens in a new windowOpens an external siteOpens an external site in a new window After years of native mobile development, we’ve decided to go full steam ahead building all of our new mobile apps using React Native. As I’ll explain, that decision doesn’t come lightly. Each quarter, the majority of buyers purchase on mobile (with 71% of our buyers purchasing on mobile in Q3 of last year). Black Fr
Ubuntu Weekly Recipe 第814回1500円以下で買えるRaspberry Pi PicoサイズのRISC-VボードなMilk-V DuoでUbuntuを動かす Ubuntu 24.04 LTSではRISC-Vボードのひとつである「Milk-V Mars」をサポートしました。これは中国のRISC-V製品のベンダーであるMilk-Vが作っているRaspberry Piライクなシングルボードコンピューターです[1]。ただしこのMarsはなかなか入手できない状況が続いています。Milk-Vでは他にも64コア搭載されたPCライクなPioneer、10GbEのネットワークスイッチとして使えるVegaなどもリリースしています。今回はRaspberry Pi Picoサイズの小さなボードで、比較的安価で入手性が高いMilk-V Duoシリーズに、Ubuntuをインストールしてみましょう
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
Opens in a new windowOpens an external siteOpens an external site in a new window On February 24, 2021, Shipit!, our monthly event series, presented Making Commerce Extensible with WebAssembly. The video is now available. At Shopify we aim to make what most merchants need easy, and the rest possible. We make the rest possible by exposing interfaces to query, extend and alter our Platform. These in
What's New In DevTools (Chrome 95) | Blog | Chrome for Developers
New CSS length authoring tools DevTools added an easier yet flexible way to update lengths in CSS! In the Styles pane, look for any CSS property with length (e.g. height, padding). Hover over the unit type, and notice the unit type is underlined. Click on it to select a unit type from the dropdown. Hover over the unit value, and your mouse pointer is changed to horizontal cursor. Drag horizontally
8 best practices for optimizing Lambda functions — Cloudash Blog
Published onMonday, April 18, 20228 best practices for optimizing Lambda functionsAuthorsNameTomasz ŁakomyTwitter@tlakomy AWS Lambda is the backbone of every serverless architecture. While browsing endless serverless patterns, architectures and solutions available online, it's hard to find one without at least a single lambda function. Since its announcement in 2014, AWS Lambda has become a de-fac
Bringing Javascript to WebAssembly for Shopify Functions
Opens in a new windowOpens an external siteOpens an external site in a new window At Winter Editions 2023 we announced a Local Developer Preview for JavaScript for Shopify Functions. That means that we’re adding JavaScript right next to Rust as our first-class languages for Shopify Functions (but you can still use anything that compiles to WebAssembly!). While you can’t deploy a Shopify Function w
What's New In DevTools (Chrome 90) | Blog | Chrome for Developers
New CSS flexbox debugging tools DevTools now has dedicated CSS flexbox debugging tools! When an HTML element on your page has display: flex or display: inline-flex applied to it, you can see a flex badge next to it in the Elements panel. Click the badge to toggle the display of a flex overlay on the page. In the Styles pane, you can click on the new icon next to the display: flex or display: inlin
Every so often I read an essay that I end up thinking about, and citing in conversation, over and over again. Here’s my index of all the ones of those I can remember! I’ll try to keep it up to date as I think of more. There's a lot in here! If you'd like, I can email you one essay per week, so you have more time to digest each one: Nelson Elhage, Computers can be understood. The attitude embodied
Introduction to Go 1.17 The latest Go release, version 1.17, arrives six months after Go 1.16. 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 Go 1.17 includes three small enhancements to the l
What's New In DevTools (Chrome 77) | Blog | Chrome for Developers
Copy element's styles Right-click a node in the DOM Tree to copy that DOM node's CSS to your clipboard. Figure 1. Copy element styles. Thanks Adam Argyle and VisBug for the inspiration. Visualize layout shifts Supposing you're reading a news article on your favorite website. As you're reading the page, you keep losing your place because the content is jumping around. This problem is called layout
Twenty-five open-source network emulators and simulators you can use in 2023 - Open-Source Routing and Network Simulation
I surveyed the current state of the art in open-source network emulation and simulation. I also reviewed the development and support status of all the network emulators and network simulators previously featured in my blog. Of all the network emulators and network simulators I mentioned in my blog over the years, I found that eighteen of them are still active projects. I also found seven new proje
CUPID—for joyful coding
What started as lighthearted iconoclasm, poking at the bear of SOLID, has developed into something more concrete and tangible. If I do not think the SOLID principles are useful these days, then what would I replace them with? Can any set of principles hold for all software? What do we even mean by principles? I believe that there are properties or characteristics of software that make it a joy to
What follows is a brain dump of everything I know about compiling Rust to WebAssembly. Enjoy. Some time ago, I wrote a blog post on how to compile C to WebAssembly without Emscripten, i.e. without the default tool that makes that process easy. In Rust, the tool that makes WebAssembly easy is called wasm-bindgen, and we are going to ditch it! At the same time, Rust is a bit different in that WebAss
IntroductionWhen roaming around the techies forums, I often see some people (and many not very experienced) asking for “How do I make an antivirus”, sometimes with not very adapted languages (bat, PHP, …) and having a wrong idea of what an antivirus is, and how it should be built. I’ve also seen many “Antivirus softwares” made by kiddies, with very few still-at-school people and about 4 hours per
1 Introduction Compilers, assemblers and similar tools generate all the binary code that processors execute. It is no surprise then that these tools play a major role in security analysis and hardening of relevant binary code. Often the only practical way to protect all binaries with a particular security hardening method is to have the compiler do it. And, with software security becoming more and
NVIDIA Releases Open-Source GPU Kernel Modules | NVIDIA Technical Blog
NVIDIA is now publishing Linux GPU kernel modules as open source with dual GPL/MIT license, starting with the R515 driver release. You can find the source code for these kernel modules in the NVIDIA/open-gpu-kernel-modules GitHub page This release is a significant step toward improving the experience of using NVIDIA GPUs in Linux, for tighter integration with the OS, and for developers to debug, i
WebAssembly 入門してみた
WebAssembly 入門してみた 最近こんなニュース記事を見て、 WebAssemblyに対してクラウドサービスを抽象化、そのままAWSでもAzureでもGoogle Cloudでも実行可能にする「SpiderLightning」、Deis Labsが公開、標準化も推進 いろんなOSにまたがった実行環境という意味ではJavaのJVMみたいだなと思ったり(Javaそんなに詳しくないけど)、「WebAssemblyってそんなこともできるのか...」とちょっと興味を惹かれた。 名前のちょっとした概要だけは知っている所謂「にわか勢」だったので、良い機会だし少しちゃんと調べてみる。 そもそもWebAssemblyて とりあえず公式ページを見てみると、こんな記載がある。 WebAssembly (abbreviated Wasm) is a binary instruction format fo
The SYZBOT CTF
目次 第０章 概要 0.1 syzbot とは？ 0.2 主な登場人物紹介？ 0.3 自己紹介：熊猫の Linux との関わりについて 0.4 今日のお話「バグハンティング」 第１章 Linux カーネルについて 1.1 Linux カーネルの規模について 1.2 Linux カーネルの制約事項について 1.3 Linux カーネルのデバッグ支援機能について 第２章 カーネルメッセージを読めるようにするための試行錯誤について 2.1 printk() に求められているものとは？ 2.2 複数行分のメッセージをバッファリングする試み（２０１７年４月～） 2.3 メッセージ本文中にコンテキスト情報を埋め込む試み（２０１８年４月～） 2.4 １行分のメッセージをバッファリングする試み（２０１８年６月～） 2.5 再び１行分のメッセージをバッファリングする試み（２０１８年９月～） 2.6 再挑戦（
What's New In DevTools (Chrome 100) | Blog | Chrome for Developers
Chrome 100 Here’s to the 100th Chrome version! Chrome DevTools will continue to provide reliable tools for developers to build on the web. Take a moment to click around in the What’s New tab to celebrate the milestones. As usual, you can watch the latest What’s New in DevTools video by clicking on the image. View and edit @supports at rules in the Styles pane You can now view and edit the CSS @sup
Python is eating the world: How one developer's side project became the hottest programming language on the planet
Python is eating the world: How one developer’s side project became the hottest programming language on the planet Share with Your Friends Python is eating the world: How one developer’s side project became the hottest programming language on the planet Check out this article I found on TechRepublic. Your email has been sent Python is eating the world: How one developer’s side project became the h
Modern Linux operating systems provide many tools to run code more securely. There are namespaces (the basic building blocks for containers), Linux Security Modules, Integrity Measurement Architecture etc. In this post we will review Linux seccomp and learn how to sandbox any (even a proprietary) application without writing a single line of code. Tux by Iwan Gabovitch, GPL Sandbox, Simplified Pixa
Introducing Apple’s On-Device and Server Foundation Models
At the 2024 , we introduced Apple Intelligence, a personal intelligence system integrated deeply into iOS 18, iPadOS 18, and macOS Sequoia. Apple Intelligence is comprised of multiple highly-capable generative models that are specialized for our users’ everyday tasks, and can adapt on the fly for their current activity. The foundation models built into Apple Intelligence have been fine-tuned for u
.app 1 .dev 1 #11WeeksOfAndroid 13 #11WeeksOfAndroid Android TV 1 #Android11 3 #DevFest16 1 #DevFest17 1 #DevFest18 1 #DevFest19 1 #DevFest20 1 #DevFest21 1 #DevFest22 1 #DevFest23 1 #hack4jp 3 11 weeks of Android 2 A MESSAGE FROM OUR CEO 1 A/B Testing 1 A4A 4 Accelerator 6 Accessibility 1 accuracy 1 Actions on Google 16 Activation Atlas 1 address validation API 1 Addy Osmani 1 ADK 2 AdMob 32 Ads
You’re seeing information for Japan . To see local features and services for another location, select a different city. Show more The App Size Problem Uber’s iOS mobile Apps for Rider, Driver, and Eats are large in size. The choice of Swift as our primary programming language, our fast-paced development environment and feature additions, layered software and its dependencies, and statically linked
We announced the Bytecode Alliance nearly a year ago, and since then it has been… quite a year 😬 While the 2020-ness of this year has slowed us down on some fronts, we’ve also made a lot of progress on others. Now that we’ve adjusted to the new normal, we’re gearing up to accelerate on all fronts. But before we do that, we wanted to share some highlights of what we’ve achieved to date. Progress o
Effective TypeScript › The Saga of the Closure Compiler, and Why TypeScript Won
Here's something that makes me feel old: in just six months, Gmail will celebrate its 20th anniversary. If you weren't actively developing web sites at the time, it's hard to capture just how revolutionary it was. This was a time when JavaScript was held in almost universally low regard. The idea that you could build a sophisticated web app using it was mind-boggling. But it clearly worked and it
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BPF Performance Toolsを読んだ感想 - go_vargoのブログ
Git Credential Manager: authentication for everyone
eBPF - The Future of Networking & Security
Rust言語のメリットと課題、「Azure IoT Edge」の事例から分かること
The Linux Kernel Module Programming Guide
Speeding up Linux disk encryption
Linux kernel in-tree Rust support
React Native is the Future of Mobile at Shopify
第814回 1500円以下で買えるRaspberry Pi PicoサイズのRISC-VボードなMilk-V DuoでUbuntuを動かす | gihyo.jp
Tales of the M1 GPU - Asahi Linux
How Shopify Uses WebAssembly Outside of the Browser
Essays on programming I think about a lot
Go 1.17 Release Notes - The Go Programming Language
Rust to WebAssembly the hard way — surma.dev
Making an antivirus engine : Guidelines - Adlice Software
Low-Level Software Security for Compiler Developers
Sandboxing in Linux with zero lines of code
動的機能モジュールからコードにアクセスするパターン
How Uber Deals with Large iOS App Size
Bytecode Alliance: One year update