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MirageOS 4.0 – Self-managed internet infrastructure with unikernels
Read the post on "Announcing MirageOS 4.0.0" from our blog.
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The latest blog posts to take off on Hacker News. 2,560 posts.
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Brutal OS reached milestone 4
The Year of the Brutal Desktop
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A FOSS proposal for a new type of OS for a new type of computer (2021)
A possible next evolutionary step for computers is persistent memory: large capacity non-volatile main memory. With a few terabytes of nonvolatile RAM, who needs an SSD any more? I will sketch out a proposal for how to build an versatile, general-purpose OS for a computer that doesn't need or use filesystems or files…
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Using Rust to Scale Elixir for 11 Million Concurrent Users
The Backend Infrastructure team at Discord was hard at work improving the scalability and performance of our core real-time communications infrastructure.
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Another Vulnerability in the LPC55S69 ROM
The discovery of an undocumented hardware block in the LPC55S69.
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Asahi Linux alpha release
Porting Linux to Apple Silicon
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Continental Europe successfully synced with Ukraine and Moldova power systems
Following an urgent request by Ukrenergo and Moldova for emergency synchronisation, the TSOs of Continental Europe agreed to start on 16 March 2022 the trial synchronisation of the Continental European Power System with the power systems of Ukraine and Moldova. This acceleration of the synchronisation project ongoing…
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Put an io_uring on it: Exploiting the Linux kernel
How much do you know about system calls and how they introduce security risks? We shed light on these interactions and how security teams monitor them.
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The AMD Branch (Mis)Predictor Part 2: Where No CPU Has Gone Before
In this blog post, OSS Security Researcher Pawel Wieczorkiewicz shares his journey from trying to save one byte of code to the discovery of two new cases of Straight-Line-Speculation (SLS) which affect the Zen1 and Zen2 microarchitectures of AMD CPUs. Using the findings presented in his earlier blog on the AMD branch…
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A new speed milestone for Chrome
Everyday, billions of people around the world turn to Chrome to get things done quickly on their devices, whether shopping for a new pair o...
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Speeding up Go's built-in JSON encoder for large arrays of objects
I was looking into some of octosql 's benchmarks the other day and noticed a large chunk of time in DataStation / dsq is spent in encoding JSON objects. JSON is an intermediate format in DataStation and it's pretty inefficient. But the reason it's used is because almost every scripting language supported by…
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Avoiding the top Nginx configuration mistakes
Deliver modern applications with NGINX. Explore high-performance load balancing, API gateways, and web server solutions trusted by top global enterprises.
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LXC vs. Docker
Are you confused about whether to use LXC or Docker for your containerization needs? This article compares the two container platforms in terms of ...
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Amazon Elastic File System Update – Sub-Millisecond Read Latency
Amazon Elastic File System (Amazon EFS) was announced in early 2015 and became generally available in 2016. We launched EFS in order to make it easier for you to build applications that need shared access to file data. EFS is (and always has been) simple and serverless: you simply create a file system, attach it […]
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The world of PostgreSQL wire compatibility
A wire protocol is the format for interactions between a database server and its clients. It encompasses authentication, sending queries, receiving responses, and so on. It is a description of the exact bytes sent and received by servers and clients. It does NOT encompass the actual query language itself, let alone…
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Landing a new syscall, part 1: What is futex?
A deep dive into the futex system call and how it is used to process synchronization functions.
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Raid-Z Expansion Feature for ZFS Goes Live
The Foundation sponsored feature reflows existing data to rewrite it onto a new arrangement of disks thereby freeing space at the end of the logical RAID-Z group The FreeBSD Foundation funded the project to ensure the completion and release of an easy-to-use and practical application. The project came in under budget…
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Java BitSet performance-flicker mystery
Why does the performance of this prime sieve, using a Java BitSet, flicker between either decent performance and half of that?
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Jepsen: Radix DLT 1.0-Beta.35.1
Radix DLT (Distributed Ledger Technology) is a distributed ledger: a serializable log of transactions over a state machine, along with mechanisms for querying that state. Throughout this report, “Radix” refers to the Radix DLT software .
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How to stop running out of ephemeral ports and love long-lived connections
Often programmers have assumptions that turn out, to their surprise, to be invalid. From my experience this happens a lot. Every API, technology or system can be abused beyond its limits and break in a miserable way
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Failing to reach DDR4 bandwidth
Unum builds the Search, Storage, and Networking engines powering the modern data stack. Deployed on 100M+ devices, our technology serves DBMS unicorns and frontier AI labs.
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WebVM: Server-less x86 virtual machines in the browser
We made a server-less virtual Linux environment that runs unmodified Debian binaries in the browser. This is powered by CheerpX, a WebAssembly virtualization platform. Feel free to play with it and report bugs: https://webvm.io
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PostgreSQL used fsync incorrectly for 20 years (2019) [video]
About a year ago the PostgreSQL community discovered that fsync (on Linux and some BSD systems) may not work the way we always thought it is, with possibly disastrous consequences for data durability/consistency (which is something the PostgreSQL community really values).
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Magic-trace: Diagnose tricky performance issues with Intel Processor Trace
Intel Processor Trace is a hardware technology that can record all program execution flow along with timing information accurate to around 30ns. As far as I ...
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Prime Video Uses WebAssembly
The switch to WebAssembly increases stability, speed.
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