frontpage.
newsnewestaskshowjobs

Open Source @Github

fp.

The $8 Linux Computer (2022)

http://thelittleengineerthatcould.blogspot.com/2022/12/the-8-linux-computer.html
69•zenincognito•2h ago•30 comments

Need for Speed Underground 2 online in the browser

https://nfsu2.xyz/
422•fluxusars•6h ago•135 comments

Libghostty 1.0

https://mitchellh.com/writing/libghostty-1-0
875•mfiguiere•16h ago•143 comments

Running a law firm on Free software

https://decoded.legal/blog/2026/11/running-a-law-firm-on-free-software-2026-edition/
108•DeepLogin•6h ago•51 comments

British Library Legal deposit and web archiving

https://www.bl.uk/services/legal-deposit/web-archiving
26•robtherobber•4d ago•7 comments

Every Mac comes with an (undocumented) family member classifier

https://8rank.ai/game/apple-intelligence-personal-knowledge-graph
366•infwhispers•6h ago•210 comments

Building the NBC News Big Board

https://ejfox.com/projects/nbc-big-board
31•whalesalad•3d ago•11 comments

Tesla to wind down Cybertruck production

https://www.nbcnews.com/tech/tech-news/tesla-wind-cybertruck-production-years-poor-sales-markets-...
1095•PLenz•1d ago•1948 comments

ToothPaste

https://brisk4t.github.io/blog/toothpaste/
58•speckx•3d ago•11 comments

Show HN: Spindle – a full-featured, type-safe web framework for OCaml 5

https://github.com/hyphatech/spindle
35•zaiev•2d ago•8 comments

A Jev that can ask Opus for help gives Opus accuracy at 4x lower cost

https://hightouch.com/blog/llm-judges-identity-resolution
536•theanomaly•20h ago•131 comments

Tasfer: a text editor drawn on a 2D canvas

https://www.hamza.se/blog/tasfer
13•hamza512b•3d ago•5 comments

Greece has its own Pompeii: Thera buried Akrotiri in ash 17th-16th century BCE

https://www.smithsonianmag.com/history/greece-has-its-own-pompeii-and-the-ruins-tell-a-captivatin...
162•derbOac•3d ago•24 comments

US FAA says it will phase out floppy disks from air traffic control by 2028

https://www.reuters.com/world/us/us-faa-says-it-will-phase-out-floppy-disks-air-traffic-control-b...
372•ChrisArchitect•1d ago•310 comments

RealPage rent-pricing case wraps with nearly $360M to renters

https://www.multifamilydive.com/news/realpage-rent-pricing-case-360m-renters/873553/
158•raybb•16h ago•113 comments

The Components of Agent Memory

https://www.anthropic.com/research/components-of-agent-memory
101•geoffbp•9h ago•58 comments

Firecracker VM Escape: PwnEscape Part 2

https://pwn.ai/blog/firecracker-escape
265•SerCe•20h ago•114 comments

The Gordon Gekko Effect: The Role of Culture in the Financial Industry [pdf]

https://www.newyorkfed.org/medialibrary/media/research/epr/2016/epr_2016_gordon-gekko-effect_lo.pdf
4•tylerdane•2h ago•1 comments

PostgreSQL Internals [pdf] (2023)

https://edu.postgrespro.com/postgresql_internals-14_en.pdf
65•Foe•3d ago•6 comments

A barbarian tribe's mythic origin story is true, ancient DNA reveals

https://www.science.org/content/article/barbarian-tribe-s-mythic-origin-story-true-ancient-dna-re...
162•benbreen•11h ago•134 comments

8088 Domination Post-Mortem

https://trixter.oldskool.org/2014/06/19/8088-domination-post-mortem-part-1/
45•cosmojg•2d ago•6 comments

Notes on San Marino

https://mattlakeman.org/2026/11/05/notes-on-san-marino/
111•yorwba•23h ago•46 comments

Ask HN: How did you convince family and friends to join your XMPP/Matrix server?

11•mtlynch•1h ago•6 comments

Upload Your RAM

https://uploadyourram.org
232•susanthenerd•6h ago•212 comments

The Flash C Compiler

https://blog.adafruit.com/2026/10/31/flash-c-compiler/
86•AlexeyBrin•4d ago•40 comments

The great butter and cheese fire of 1991

https://www.wisfarmer.com/story/opinion/columnists/2022/05/11/over-20-m-lbs-commodities-lost-grea...
64•subroutine•2d ago•20 comments

First steps in bare-metal programming using UEFI

https://kevinboone.me/efitest_index.html
241•LaSombra•23h ago•48 comments

GitHub's new Git storage architecture

https://github.blog/engineering/architecture-optimization/inside-githubs-new-git-storage-architec...
186•DAlperin•20h ago•53 comments

Port 0: The Port That Does Not Exist

https://acid.vegas/blog/the-port-that-does-not-exist/
39•NewCzech•6h ago•16 comments

Can GROUP BY still be optimized after all these years?

https://pivotlake.io/blog/know-your-limit-faster-top-k-aggregation/
111•ntur1337•3d ago•17 comments
Open in hackernews

The Scalar Select Anti-Pattern

https://matklad.github.io/2025/05/14/scalar-select-aniti-pattern.html
47•goranmoomin•1y ago

Comments

castratikron•1y ago
As long as processing one event does not affect any of the other events in the batch. E.g. events are file IO, and processing one event causes another event's descriptor to get closed before that event can be processed.
wahern•1y ago
If the close routine on an event source, or the low-level (e.g. epoll) registration, deregistration, and dequeueing logic doesn't know how to keep polling and liveness state consistent between userspace and the kernel, they've got much bigger problems. This looks like Rust code so I would hope the event stream libraries are, e.g., keeping Rc'd file objects and properly managing reference integrity viz-a-viz kernel state before the application caller ever sees the first dequeued event in a cycle. This is a perennial issue with event loop libraries and buggy application code (in every language). One can't just deal with raw file descriptors, call the close syscall directly, etc, hoping to keep state consistent implicitly. There's an unavoidable tie-in needed between application's wrappers around low-level resources and the event loop in use.
taeric•1y ago
I'm not entirely clear on what the proposal is at the end? Seems that the long term answer as to "which of these implications to pursue" is "all of them?" Simply taking in a batch of instructions doesn't immediately change much? You still have to be able to do each of the other things. And you will still expect some dependencies between batches that could possibly interact in the same ways.

In a sense, this is no different than how your processor is dealing with instructions coming in. You will have some instructions that can be run without waiting on previous ones. You will have some that can complete quickly. You will have some that are stalled on other parts of the system. (I'm sure I could keep wording an instruction to match each of the implications.)

To that end, part of your program has to deal with taking off "whats next" and finding how to prepare that to pass to the execution portion of your program. You can make that only take in batches, but you are almost certainly responsible for how you chunk them moreso than whatever process is sending the instructions to you? Even if you are handed clear batches, it is incumbent on you to batch them as they go off to the rest of the system.

lmz•1y ago
I guess the proposal is "instead of fetching and acting on one event at a time, consider fetching all available events and look for opportunities to optimize which ones you process (e.g. by prioritization or by skipping certain events if superseded by newer ones)".
taeric•1y ago
I mean, I got that. But you could as easily say "instead of fetching and acting on one event at a time, fetch and triage/route instructions into applicable queues."

In particular, there is no guarantee that moving to batches changes any of the problems you may have from acting on a single one at a time. To that end, you will have to look into all of the other strategies sooner or later.

Following from that, the problem is not "processMessage" or whatever. The problem is that you haven't broken "processMessage" up into the constituent "receive/triage/process/resolve" loop that you almost certainly will have to end up with.

malkia•1y ago
in CPU's - pipelining!
jchw•1y ago
I believe something similar is going on internally in Windows with event queues. It coalesces and prioritizes input events when multiple of them pile up before you're able to pop new events off of the queue. (For some events, e.g. pointer events, you can even go and query frames that were coalesced during input handling.) On the application/API end, it just looks like a "scalar select" loop, but actually it is doing batching behavior for input events!

(On the flip side, if you have a Wayland client that falls behind on processing its event queue, it can crash. On the whole this isn't really that bad but if you have something sending a shit load of events it can cause very bad behavior. This has made me wonder if it's possible, with UNIX domain sockets, to implement some kind of event coalescing on the server-side, to avoid flooding the client with high-precision pointer movement events while it's falling behind. Maybe start coalescing when FIONREAD gets to some high watermark? No idea...)