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Windows 95 defenses against installers that overwrite a file with an older one
A very primitive version of recovery.
Topics /
Systems & Performance
The most popular blog posts about systems & performance on Hacker News. 2,560 posts.
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Unreasonable Ineffectiveness of Machine Learning in Computer Systems Research
In 1960, the physicist Eugene Wigner wrote a famous essay titled “The Unreasonable Effectiveness of Mathematics in the Natural Sciences” in which he explored the question of why mathematics is so r…
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Embedded Rules of Thumb (2018)
26 April 2018 by Phillip Johnston • Last updated 10 June 2021You may call them guidelines, heuristics, or rules of thumb. No matter, the purpose is the same: to provide a reasonable approximation of the truth. These rules of thumb can help guide your understanding of the systems you work on, focus you toward the ……
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Bit-twiddling optimizations in Zed's Rope
From the Zed Blog: In this episode of Zed Decoded, Thorsten and Antonio walk through the performance optimizations Antonio when working on Zed's Rope data structure before they then pair on adding more optimizations
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Perfctl: Stealthy malware targeting Linux servers
Perfctl is particularly elusive and persistent malware employing several sophisticated techniques
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SQLite Begin Concurrent
Usually, SQLite allows at most one writer to proceed concurrently. The BEGIN CONCURRENT enhancement allows multiple writers to process write transactions simultanously if the database is in "wal" or "wal2" mode, although the system still serializes COMMIT commands.
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Improved code caching
Starting with Chrome 66, V8 caches more (byte)code by generating the cache after top-level execution.
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Meta quickly detects silent data corruptions at scale
Silent data corruptions (SDCs), data errors that go undetected by the larger system, are a widespread problem for large-scale infrastructure systems. Left undetected, these types of corruptions can…
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Scipio: A Thread-per-Core Crate for Rust and Linux
Glommio (pronounced glom-io or |glomjəʊ|) is a cooperative thread-per-core crate for Rust & Linux based on io_uring. It allows you to write asynchronous code that takes advantage of rust async/await, but it doesn’t use helper threads anywhere.
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The Sisyphean Task of DNS Client Config on Linux
The covers a brief history of DNS on Linux systems and what steps Tailscale is taking to ensure it is configured consistently.
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Index, Count, Offset, Size
Wherein we make progress towards solving one of the most vexing problems of Computer Science — naming things.
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Available on Google Cloud: Intel Optane DC Persistent Memory
In-memory workloads continue to be the backbone of innovative data management use cases, but as demand increases, so does the need for even larger memory capacity. In July, we announced a partnership with Intel and SAP to offer GCP virtual machines supporting Intel® Optane DC™ persistent memory for SAP workloads. This…
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Lessons we learned when debugging a scaling problem
Get a closer look at how we investigated errors originating from scheduled jobs, and how we stumbled upon "the tyranny of the clock."
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GCC eBPF for Linux port has landed
This is the mail archive of the gcc-patches@gcc.gnu.org mailing list for the GCC project .
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Auto Recovery for Amazon EC2
An important rule when building a highly available and highly reliable system is to design for failure. In other words, your design model should assume that, as Amazon CTO Werner Vogels has said, “everything fails all the time.” Fortunately, modern data centers, networks, and servers are highly reliable, and failures…
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WASI Support in Go
Go 1.21 adds a new port targeting the WASI preview 1 syscall API
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DragonFly BSD 4.8 released
DragonFly version 4.8 brings EFI boot support in the installer, further speed improvements in the kernel, a new NVMe driver, a new eMMC driver, and Intel video driver updates.
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X.org on NetBSD – The State of Things
A few years ago, I wrote a "state of things" blog post about Wayland on NetBSD . It's only natural that I should do one about X11, which is used by far more people to get a graphical environment on NetBSD.
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DBOS: A database-oriented operating system
Today, most people develop applications on operating systems such as Linux which are more than thirty years old, even though computing has changed a lot in the meantime. Since Linux was first released in 1991, the size of application state and data has grown by several orders of magnitude, many applications have moved…
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Red Hat Unveils Red Hat Enterprise Linux 7
Red Hat, Inc. (NYSE:RHT), the world's leading provider of open source solutions, today announced the general availability of Red Hat Enterprise Linux 7, the latest major release of the company's flagship platform. Red Hat Enterprise Linux 7 not only lays the foundation for the open hybrid cloud and serves enterprise…
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An even slimmer pdf.js
TL;DR: Firefox’s built-in PDF viewer is on track to benefit from additional large reductions in memory consumption when Firefox 33 is released in mid-October.
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Reports of Telnet's death have been greatly exaggerated
Terrace runs sensors attackers cannot tell from real targets. We see new attack sources first, record what they do, and ship the block rules while the attack is still running.
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Raspberry Pi Pico 2 at 873.5MHz with 3.05V Core Abuse
Adventures with dry ice and RP2350 - how fast can it go?
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Mark–Scavenge: Waiting for Trash to Take Itself Out
This blog post summarises a new garbage collection algorithm called Mark-Scavenge, which highlights how using reachability as a proxy for liveness in moving GCs leads to unnecessary data movement and how we can address this. This work is from the latest paper within the research collaboration between Oracle and…
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