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Top posts
Every blog post that took off on Hacker News, ranked by the votes of its best submission. 2,560 posts.
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Debugging a FUSE deadlock in the Linux kernel
Tycho Andersen
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The Architecture of a Large-Scale Web Search Engine, Circa 2019
Our Journey to Microservices, Kubernetes and beyond.
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State machine replication, and why you should care
Listen in on Jane Street’s Ron Minsky as he has conversations with engineers working on everything from clock synchronization to reliable multicast, build systems to reconfigurable hardware. Get a peek at how Jane Street approaches problems, and how those ideas relate to tech more broadly.
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PyPy warmup improvements
Hello everyone! I'm very pleased to announce that we've just managed to merge the optresult branch. Under this cryptic name is the bigges...
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OpenZFS vs. Btrfs and other file systems (2017)
Michael Dexter returns to update his blog post on the different file systems and details some key developments that are unfolding. He covers what's being added to these respective file systems: OpenZFS, Btrfs, and bcachefs. Michael Dexter has invested his volunteer time and career in Open Source hypervisors and file…
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Speeding up C++ build times
How we cut build times by 50% and shipped a solution for scale.
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OpenZFS – dRAID, Finally
Learn about dRAID in OpenZFS 2.1. Explore its data protection capabilities, distributed hot spares, faster resilvering, and enhanced performance in this article.
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About ZFS Performance
You likely know I like the ZFS filesystem a lot. ZFS stores the files in B-trees in a similar fashion as InnoDB stores data.
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We sped up time series by 20-30x
This is a follow up post that dives into how we managed to achieve such huge performance gains for time series (among other things), and why it was so hard in the first place.
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Pgsql: Create an infrastructure for parallel computation in PostgreSQL
Create an infrastructure for parallel computation in PostgreSQL. This does four basic things. First, it provides convenience routines to coordinate …
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Quicker serverless Postgres connections
Neon’s serverless driver redirects the PostgreSQL TCP wire protocol over WebSockets. This makes ordinary, fully-functional PostgreSQL connections accessible from new environments — including serverless platforms like Cloudflare Workers and Vercel Edge Functions. A key feature of these environments is that state is not…
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PC-BSD Evolves into TrueOS
Hey TrueOS Community! I just wanted to take a few minutes to address what some of you may have already guessed. With a heavy heart, the TrueOS Project’s core
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64 bits ought to be enough for anybody
How quickly can we use brute force to guess a 64-bit number? The short answer is, it all depends on what resources are available. So we’re going to examine this problem starting with the most naive approach and then expand to other techniques involving parallelization. We’ll discuss parallelization at the CPU level…
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Gremlin Free – Run chaos experiments to prevent outages
Get immediate access to Gremlin
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Why does one Nginx worker take all the load?
Scaling up TCP servers is usually straightforward. Most deployments start by using a single process setup. When the need arises more worker processes are added.
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Fixing a Buffer Overflow in Unix v4 Like It's 1973
This blog post shows how to fix a buffer overflow in the su progam of UNIX v4
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Optimizing the Ion compiler back end
In September, machine learning engineers at Mozilla filed a bug report indicating that Firefox was consuming excessive memory and CPU resources while running Microsoft’s ONNX Runtime (a machine learning library) compiled to WebAssembly.
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Postgres performance analysis resulted in a 10x improvement in CPU use
Heap is the only digital insights platform that shows everything users do on your site, revealing the "unknown unknowns" that stay invisible with other tools. Learn about how we improved our performance and saved millions!
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Time Traveling Linux Bug Reporting: Coming in Julia 1.5
Julia 1.5 is gaining a cool new bug reporting capability, leveraging mozilla's rr project to automatically create fully-reproducible bug reports
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Intro to kernel debugging
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Netflix: 30% bitrate saving using Film Grain Synthesis
Searchable archive of articles, posts and press on video denoising, per-shot encoding, AV1 film grain synthesis, MXL and broadcast AI.
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Linux ext2 filesystem driver now marked as deprecated
31 years after the start of its career in 1993, it’s time for ext2 to retire. Here we are talking about the driver for this filesystem, not exactly the filesystem itself. Continue reading to understand the subtle difference.
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Kernel RCE in iOS/macOS with ICMP
Today, GitHub code scanning has all of LGTM.com’s key features—and more! The time has therefore come to announce the plan for the gradual deprecation of LGTM.com.
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Leave your OS at home: the rise of library operating systems
The efficiency of Operating Systems (OSes) has always been in the spotlight of systems researchers, ever since the seminal Dijkstra’s THE multiprogramming system in early 60s. But the reason …
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