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The One Billion Row Challenge in CUDA
On my journey to learn CUDA, I decided to tackle the One Billion Row Challenge with it.
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Good Retry, Bad Retry
Sometimes, a seemingly simple and obvious solution can lead to a series of problems later on. This is especially true when adding retries.
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Linux When?
From the Zed Blog: In this episode of Zed Decoded, Thorsten talks to Mikayla, who's been leading the effort to Zed working on Linux, about the Zed's Linux version and how it's taking shape
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Defcon: Preventing overload with graceful feature degradation (2023)
This is one in a series of papers I’m reading from OSDI and Usenix ATC. These paper reviews can be delivered weekly to your inbox , or you can subscribe to the Atom feed . As always, feel free to reach out on Twitter with feedback or suggestions!
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Debugging a rustc segfault on Illumos
Using `mdb` and `pmap` to find the cause of a crash.
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Scaling One Million Checkboxes to 650M checks
How I scaled One Million Checkboxes to handle half a million users
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Pipe Viewer – A Unix Utility You Should Know About
Hi all! I'm starting a new article series here. This one is going to be about Unix utilities that you should know about. The articles will discuss one Unix program at a time. I'll try to write a good introduction to the tool and give as many examples as I can think of. The first post in this series is going to be…
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macOS 14.4 causes JVM crashes
Java users on macOS 14 running on Apple silicon systems should consider delaying the macOS 14.4 update
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Tests show high-temperature superconducting magnets are ready for fusion
A comprehensive study of high-temperature superconducting magnets built by MIT and Commonwealth Fusion Systems confirms they meet requirements for an economic, compact fusion power plant.
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Making memcpy(NULL, NULL, 0) well-defined
C2y makes memcpy(NULL, NULL, 0) and other zero-length operations on null pointers well defined. This removes a source of bugs that may result in security issues.
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K8s Service Meshes: The Bill Comes Due
Kubernetes Service Meshes aren't free anymore, what teams need to know moving forward.
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Why does an extraneous build step make my Zig app 10x faster?
For the past few months, I’ve been curious about two technologies: the Zig programming language and Ethereum cryptocurrency. To learn more about both, I’ve been using Zig to write a bytecode interpreter for the Ethereum Virtual Machine. Zig is a great language for performance optimization, as it gives you fine-grained…
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Practices of Reliable Software Design
It should have good performance and be able to hold many entries. Reads are more common than writes. I know how I would do it already, but I’m curious about your approach.
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Reformatting 100k Files at Google in 2011
Laurent Le Brun's blog
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SSH as a Sudo Replacement
A major caveat in tools like sudo and doas for that matter is that they rely on setuid binaries and privilege escalation in order to run commands as root.
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Beating Jeff's 3.14 Ghz Raspberry Pi 5
Jeff came up against a 1V limit in his video " Overclocking Raspberry Pi 5 to 3.14 GHz on Pi Day " after firmware was released to remove the 3Ghz limit.
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Learning about PCI-e: Driver and DMA
Creating a simple driver for a simple PCI-e device (in QEMU)
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Making a Postgres query 1k times faster
Learn how we discovered what was slowing down large database queries, and what we did to make Postgres queries 1000x faster.
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Every bug/quirk of the Windows resource compiler (rc.exe), probably
Fuzz testing decades-old software can turn up some curious behaviors
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Colliding with the SHA prefix of Linux's initial Git commit
Or, how to break all the tools that parse the "Fixes:" tag Kees Cook There was a recent discussion about how Linux's "Fixes" tag, which ...
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Troubleshooting: Terminal Lag
I think I should blog more about random troubleshooting sessions, if nothing else it will remind me what steps I took when it inevitably happens again!
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Why Oxide Chose Illumos
Servers in the Oxide Rack will form the backbone of both the compute and storage services available to customers. The rack will be composed of a variety of hardware and software components, some of which represent resource-constrained or inflexible environments; e.g., the Service Processor (SP) or Hardware Root Of…
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Raspberry Pi boosts Pi 5 performance with SDRAM tuning
tl;dr Raspberry Pi engineers tweaked SDRAM timings and other memory settings on the Pi, resulting in a 10-20% speed boost at the default 2.4 GHz clock. I of course had to test overclocking, which got me a 32% speedup at 3.2 GHz! Changes may roll out in a firmware update for all Pi 5 and Pi 4 users soon. My quest for…
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We improved the performance of a userspace TCP stack in Go
Learn how we enhanced TCP performance in Coder to achieve 5X faster throughput by optimizing buffer sizes, implementing the HyStart algorithm, and minimizing packet loss, significantly improving remote development experiences.
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Elixir/Erlang Hot Swapping Code (2016)
Hot code reloading with Elixir and Erlang
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Timeliness without datagrams using QUIC
Media over QUIC: Rethink your approach. *Unless you're doing something dope.