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The most popular blog posts about systems & performance on Hacker News. 6,942 posts.
There's been a lot of talk about the vulnpocalypse, to which I don't have much to add because I'm not a security person, but I haven't seen much discussion on the closely related (and to be fair, less serious, issue), the benchmarkpocalypse.
Latest announcements for Proxmox.
TL;DR New update for Kamerka allows to map Industrial Control Systems of whole country. As in previous version, interactive map is created…
I was finally tempted into writing this from a Hacker News discussion on “ Debian Dropping the Linux Standard Base ,” where some interest was expressed in reading an architectural critique of systemd.
In 2005, I decided to design my first geospatial database engine. PostGIS was unable to keep up with the modest volumes of sensor data I was working with and while I was new to geospatial data, I had skill designing database engines. It seemed simple enough to get the scale and performance I required. Nothing could…
Advancing the state of the art of HTTP/2 to deliver a faster user experience. See why it matters and how much of a differenc
In our 54th reading group meeting, we were looking for an answer to an important question in the distributed systems community: “What about Raft?” We looked at the “ Paxos vs Raft: Have we reached consensus on distributed consensus? ” paper to try to find the answer. As always, we had an excellent presentation, this…
I know how to decode UTF-8 using bitmath and some LUTs (see https://github.com/skeeto/branchless-utf8 ), but if I want to to go from a codepoint to UTF-8, is there a way to do it without branches?
I used OpenBSD on the original Surface Go back in 2018 and many things worked with the big exception of the internal Atheros WiFi. This meant I had to keep it tethered to a USB-C dock for Ethernet or use a small USB-A WiFi dongle plugged into a less-than-small USB-A-to-USB-C adapter.
The latest news from Google on open source releases, major projects, events, and outreach programs for early career developers.
Here is my test file tree. There are two files and a "src" subdirectory, where another two files are stored:
Most people think of machine instructions as the fundamental steps that a computer performs. However, many processors have another layer of ...
tl;dr: Having swap is a reasonably important part of a well functioning system. Without it, sane memory management becomes harder to achieve.
From DrvFs in WSL 1 to Plan 9 to virtiofs, cross-OS file access in WSL 2 has improved with each generation. A new change gives each virtio device its own dedicated DMA pool, removing the last major contention point on the virtiofs path.
We rendered the top 1 million pages on the web, tracking every conceivable performance metric, logging every error, noting every requested URL. To our knowledge this produces the first dataset that connects performance, errors, and library use on the web. In this article we analyze what the data can tell us about…
Using linked lists to optimize performance in a JSON schema validator.
At the beginning of the year, I wrote a bunch of articles on the various tricks DOS played to overcome the tight memory limits of x86’s real mode. There was one question that came up and remained unanswered: what were the various “models” that the compilers of the day offered?
Learn how Uploadcare engineers found out how to resize images on Intel processors faster than Intel itself
SIMD is a powerful performance technique, and is especially valuable in signal and image processing applications. I will be using it very extensively in my synthesizer, and also it’s increasingly used in xi-editor to optimize string comparisons and similar primitives.
In distributed systems, there’s a common understanding that it is not possible to guarantee exactly-once delivery of messages. What is possible though is exactly-once processing. By adding a unique …
I am generally a fan of Go's approach to concurrency: writing code with goroutines is a lot easier than writing traditional nonblocking network servers in a language like C or C++. However, while working on a highly concurrent network proxy I came across an interesting realization about how the Go concurrency model…
Some of you may know I've been spending whatever time I can scrounge together grinding away at a new serialization library for .NET. Serializers can be complicated beasts. They have to be reliable, flexible, and fast beyond reproach. I won't convince you that serialization libraries have to be quick — in this post…
Multi-variable optimization is an incredibly useful tool for writing software. It allows you to specify a desired result and delegate finding the solution to a reliable algorithm. If you know what you want but not how to get it, optimization can probably help. Problems with many interacting variables that are…
Lately I’ve been thinking about Stephan Berger’s recent blog post on hiding Linux processes with bind mounts. Bottom line here is that if you have an evil process you want to hide, use …
Now they’ve gone an done it. An unidentified agency has spread a potent computer virus across all the world’s computers and deleted the binaries for every copy of every software development tool. Even the offline copies — it’s that potent.
