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Dodging S3 Downtime with Nginx and HAProxy
How we took eggs out of the S3 basket.
Topics /
Systems & Performance
The most popular blog posts about systems & performance on Hacker News. 2,560 posts.
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When Solid State Drives Are Not That Solid
One night, one of the servers of our search API stopped processing indexing jobs for an unknown reason. See Algolia's process of diagnosing the problem.
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Gaining kernel code execution on an MTE-enabled Pixel 8
In this post, I’ll look at CVE-2023-6241, a vulnerability in the Arm Mali GPU that allows a malicious app to gain arbitrary kernel code execution and root on an Android phone. I’ll show how this vulnerability can be exploited even when Memory Tagging Extension (MTE), a powerful mitigation, is enabled on the device.
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Investigating Linux phantom disk reads
An investigation of weird hardware utilization highlighting some interesting Linux kernel behaviors.
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It's the end of observability as we know it (and I feel fine)
In a really broad sense, the history of observability tools over the past couple of decades have been about a pretty simple concept: how do we make terabytes of heterogeneous telemetry data comprehensible to human beings? We’ve seen different companies tackle this in different ways for technology like Ruby on Rails…
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How Facebook encodes videos
People upload hundreds of millions of videos to Facebook every day. Making sure every video is delivered at the best quality — with the highest resolution and as little buffering as possible — mean…
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Linux 7.2
Igalia is an open source consulting firm specialised in the development of innovative projects and solutions. Our engineers have expertise in a wide range of technological areas, including browsers and client-side web technologies, graphics pipeline, compilers and virtual machines. We have the most WPE, WebKit…
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SQLite briefing for Linux kernel hackers (2019)
This is a briefing on SQLite intended for Linux kernel hackers, and especially those working on Linux filesystems.
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Replacing WebRTC: real-time latency with WebTransport and WebCodecs
Media over QUIC: The long path to use something else for real-time media.
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The perils of transition to 64-bit time_t
(please note that there’s a correction at the bottom) In the Overview of cross-architecture portability problems, I have dedicated a section to the problems resulting from use of 32-bit time_…
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Debugging a Linux network stack crash via a single register value
It’s not every day that you get to debug what may well be a packet of death. It was certainly the first time for me. What do I mean by “a packet of death”? A software bug where the network stack crashes in reaction to a single received network packet, taking down the whole operating system with it.
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How we migrated onto K8s in less than 12 months
Migrating onto Kubernetes can take years. Here’s why we decided it was worth undertaking, and how we moved a majority of our core services.
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Introducing Windows Terminal
We are beyond excited to announce Windows Terminal! Windows Terminal is a new, modern, fast, efficient, powerful, and productive terminal application for
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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.
496
Slack’s Incident on 2-22-22
By Laura Nolan, with contributions from Glen D. Sanford, Jamie Scheinblum, and Chris Sullivan. Assessing conditions Slack experienced a major incident on February 22 this year, during which time many users were unable to connect to Slack, including the author — which certainly made my role as Incident Commander more…
497
Microsoft Announces Nano Server
Access to this page requires authorization. You can try signing in or changing directories .
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ReactOS 0.4.6 released
ReactOS is a free, opensource reimplementation of windows
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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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Beginning fully autonomous operations with the 6th-generation Waymo driver
Waymo will begin fully autonomous operations with its 6th-generation Driver —an important step in bringing our technology to more riders in more cities. This latest system serves as the primary engine for our next era of expansion, with a streamlined configuration that drives down costs while maintaining our…
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ReactOS 0.4.4 Released
ReactOS is a free, opensource reimplementation of windows
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AV1 beats x264 and libvpx-vp9 in practical use case
Improved video compression is important for delivering digital video files more quickly and with higher quality, while using less bandwidth and storage. Everything from 4K movie streaming to smartp…
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Haiku R1/beta1 has been released
After nearly 6 years since R1/alpha4, Haiku R1/beta1 has been released. See “Release Notes” for the (lengthy) release notes, “Press contact”, for press inquiries … and “Get Haiku!” to skip all that and just …
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Netflix Now Streaming AV1 on Android
By Liwei Guo, Vivian Li, Julie Beckley, Venkatesh Selvaraj, and Jeff Watts
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V8 Sparkplug – A non-optimizing JavaScript compiler
In V8 v9.1 we’re improving V8 performance by 5–15% with Sparkplug: a new, non-optimizing JavaScript compiler.
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The scourge of x86 emulation
Welcome to the first feature article on our site. We’re going to cover an ongoing problem with x86 emulation that affects every application that we emulate. This comes down to a single over-arching term that has wide-reaching ramifications; Emulating the x86 Total Store Ordering memory model (x86-TSO) .
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Kernel bugs hide for 2 years on average. Some hide for 20
What I learned mining 125,000 vulnerabilities from Linux git history. The average kernel bug lives 2.1 years before discovery, but some subsystems are far worse.