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Speed Without Wizardry
Vyacheslav Egorov, who goes by mraleph on the Web, wrote a responseto my article “Oxidizing Source Maps with Rust and WebAssembly”titled “Maybe you don’t nee...
Most cited
Posts that commenters keep linking to, ranked by how many different people have cited them in Hacker News comments. 82 posts.
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Potential Impact of Spectre on Processors in the Power family
View, search and download security bulletin information for individual IBM product versions and releases.
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Centrifuge: a reliable system for delivering billions of events per day
Discover Centrifuge—a system designed for high-performance, exact data delivery. Learn how it handles massive event volumes, ensuring no data loss. Join Segment's innovation.
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Linus Torvalds on aliasing
See also Dennis Ritchie on aliasing, PLOS article , pointer alias in C and remarks on the purpose of C.
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The Road to QUIC
QUIC (Quick UDP Internet Connections) is a new encrypted-by-default Internet transport protocol, that provides a number of improvements designed to accelerate HTTP traffic as well as make it more secure, with the intended goal of eventually replacing TCP and TLS on the web.
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Facebook open-sources new suite of Linux kernel components and tools
An integral part of Facebook’s engineering culture has always been our development work on open source solutions that solve real-world production issues and address key challenges in modern l…
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Bpftrace for Linux 2018
bpftrace (DTrace 2.0) for Linux 2018: the bpftrace front-end
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Jepsen: MongoDB 3.6.4
MongoDB is a long-time user of Jepsen . Over the past three years, Jepsen has performed several analyses for MongoDB, and MongoDB has integrated an expansive Jepsen test suite into their CI system. In March, MongoDB requested Jepsen perform an analysis on a previously untested configuration: sharded clusters. We also…
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What Can I Do About Bufferbloat?
Bufferbloat is high latency (or lag) that occurs when there’s other traffic on your network. This means that your network isn’t always responsive - it’s wasting your time.
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How to drop 10M packets per second
Internally our DDoS mitigation team is sometimes called "the packet droppers". When other teams build exciting products to do smart things with the traffic that passed through our network, we take joy in discovering novel ways of discarding it.
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Clive OS: Go applications that can run without an operating system (2016)
Removing (most of) the software stack from the cloud Clive is an operating system designed to work in distributed and cloud computing environments. It’s main design guidelines are: Ther…
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Mtime comparison considered harmful
tl;dr: Rebuilding a target because its mtime is older than the mtimes of its dependencies, like `make` does, is very error prone. redo does...
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Introducing the Windows Pseudo Console (ConPty)
In this, the fourth post in the Windows Command-Line series, we'll discuss the new Windows Pseudo Console (ConPTY) infrastructure and API - why we built it, what it's for, how it works, how to use it, and more.
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FoundationDB Document Layer
Today we’re open sourcing the FoundationDB Document Layer, a document-oriented database that extends the core functionality of the FoundationDB key-value store.
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Some thoughts on Spectre and Meltdown
The story of these attacks starts in late 2004. I had submitted my doctoral thesis and had a few months before flying back to Oxford for my defense, so I turned to some light reading: Intel's latest "Optimization Manual", full of tips on how to write faster code. (Eking out every last nanosecond of performance has…
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The benefits and costs of writing a POSIX kernel in a high-level language
This paper presents an evaluation of the use of a high-level language (HLL) with garbage collection to implement a monolithic POSIX-style kernel. The goal is to explore if it is reasonable to use an HLL instead of C for such kernels, by examining performance costs, implementation challenges, and programmability and…
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Qubes Air: Generalizing the Qubes Architecture
The Qubes OS project has been around for nearly 8 years now, since its original announcement back in April 2010 (and the actual origin date can be traced back to November 11th, 2009, when an initial email introducing this project was sent within ITL internally). Over these years Qubes h...
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How to Fit a Large Program into a Small Machine (1999)
As a rule, "sophisticated" progrmming is pretty boring - optimizing the unnecessary to speed up the uninteresting. Here, however, is an incredibly sophisticated package intended for fun and games. The more you know about software, the more astounded you will become as you read this.
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Zombie Processes Are Eating Your Memory
Zombies probably won’t consume 32 GB of your memory like they did to me, but zombie processes do exist, and I can help you find them and make sure that developers fix them. Tool source link is at t…
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How Discord Handles Two and Half Million Concurrent Voice Users Using WebRTC
Discover the latest news and app updates, stories, company insights, and plenty more about Discord, all in one place.
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Why Skylake CPUs Are Sometimes 50% Slower
I got a call that on newer hardware some performance regression tests have become slower. Not a big deal. Usually it is a bad configuration somewhere in Windows or some BIOS settings were set to no…
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Meltdown and Spectre Linux kernel status
By now, everyone knows that something “big” just got announced regarding computer security. Heck, when the Daily Mail does a report on it …
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Amazon Aurora Backtrack
We’ve all been there! You need to make a quick, seemingly simple fix to an important production database. You compose the query, give it a once-over, and let it run. Seconds later you realize that you forgot the WHERE clause, dropped the wrong table, or made another serious mistake, and interrupt the query, but the […]
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LoJax: First UEFI rootkit found in the wild, courtesy of the Sednit group
ESET researchers have discovered the first in-the-wild UEFI rootkit. Dubbed LoJax, the research team has shown that the Sednit operators used different components of the LoJax malware to target a few government organizations in the Balkans as well as in Central and Eastern Europe.