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The Billion Row Challenge (1BRC) – Step-by-Step from 71s to 1.7s
A step-by-step walkthrough of the Billion Row Challenge, taking a Parallel Java Streams aggregation from 71 seconds down to 1.7 with SIMD and tuning.
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The latest blog posts to take off on Hacker News. 2,560 posts.
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Moving a billion Postgres rows on a $100 budget
Inspired by the 1BR Challenge, I wanted to see how much it would cost to transfer 1 billion rows from Postgres to Snowflake. Moving 1 billion rows is no…
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SSDs have become fast, except in the cloud
A blog by and for database architects.
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Nebula is not the fastest mesh VPN, but neither are the others
(But neither are any of the others)
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Ledger: Stripe's system for tracking and validating money movement
Technical details on how Stripe built Ledger, a state-of-the-art money movement tracking system, including how teams at Stripe interact with the data quality metrics that underlie our payment processing network.
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GPU synchronization in Godot 4.3 is getting a major upgrade
Say goodbye to placing barriers, hello to the new acyclic graph
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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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It Can Be Done (2003)
A story about quality from the development of the Multics operating system.
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Building the DirectX shader compiler better than Microsoft?
This is a story about the messy state of Microsoft’s DirectX shader compiler, and trying to wrangle it into a nicer experience for game developers. In some respects, building the DXC compiler better than how Microsoft does.
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Fedora Atomic Desktops
Announcing a new family of Fedora Linux spins: Fedora Atomic. This will simplify how to discuss rpm-ostree and naming of future atomic spins.
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What's Inside a Linux Kernel Core Dump
An extremely thorough explanation of what's contained inside a Linux kernel core dump.
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Sudo for Windows
Introducing Sudo for Windows We're excited to announce the release of Sudo for Windows in Windows 11 Insider Preview Build 26052! Sudo for Windows is a
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Simple Precision Time Protocol at Meta
While deploying Precision Time Protocol (PTP) at Meta, we’ve developed a simplified version of the protocol (Simple Precision Time Protocol – SPTP), that can offer the same level of clock syn…
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When "letting it crash" is not enough
This essay explores the connection between Erlang's process supervision, state management and durable execution.
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New IBM LinuxONE 4 Express – Rack-mounted pre-configured Linux mainframe
IBM announced IBM® LinuxONE 4 Express, extending the latest performance, security and AI capabilities of LinuxONE to small and medium sized businesses and within new data center environments.
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RavenDB 6.0.2 (A Jepsen Report)
RavenDB is a distributed document database which repeatedly advertises its support for ACID transactions. 1 It’s intended for OLTP workloads, and offers a variety of ETL paths for exporting data to other systems. Its transactional API revolves around a session handle, which “represents a single business transaction on…
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WASI 0.2.0 and Why It Matters
With the release of WASI Preview 2, we take a step back and look at why it matters for wasmCloud and the WebAssembly ecosystem.
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A jump into the middle of an instruction from nowhere (2023)
Another rogue patcher.
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From slow to SIMD: A Go optimization story
So, there's this function. It's called a lot. More importantly, all those calls are on the critical path of a key user interaction. Let's talk about making it fast.
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Ceph: A Journey to 1 TiB/s
Ceph is an open source distributed storage system designed to evolve with data.
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Sourcehut network outage post-mortem
sourcehut is a network of useful open source tools for software project maintainers and collaborators, including git repos, bug tracking, continuous integration, and mailing lists.
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We switched to Java 21 virtual threads and got a deadlock in TPC-C for Postgres
We revise some fundamental background and highlight an important concern behind Java 21 virtual threads: deadlocks might be unpredictable
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SQLite: Wal2 Mode
"Wal2" mode is very similar to "wal" mode. To change a database to wal2 mode, use the command:
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A Technical Dive into PostgreSQL's replication mechanisms
Guide to PostgreSQL Replication and CDC - Navigate the complexities of logical replication in PostgreSQL.
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Databases and why their complexity is now unnecessary
This post is not going to be about what’s wrong with individual databases. There are so many databases and so many individual API issues, operational problems, and arbitrary limitations that it wou…
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Solver Performance: 1989 vs. 2024
We estimate the magnitude of speed improvement for optimization solvers and computer hardware in the 35 years from 1989 to 2024.
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June 30th, 2024, will bring the End of Life (EOL) of CentOS Linux (2023)
Upgrade CentOS and Red Hat Enterprise Linux 7 to supported systems with Red Hat's in-place solutions
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