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The time the x86 emulator team found code so bad they fixed it during emulation

https://devblogs.microsoft.com/oldnewthing/20260615-00/?p=112419
211•paulmooreparks•4h ago•63 comments

A backdoor in a LinkedIn job offer

https://roman.pt/posts/linkedin-backdoor/
1108•lwhsiao•12h ago•205 comments

John Carmack on Fabrice Bellard

https://twitter.com/ID_AA_Carmack/status/2064095424420487226
200•apitman•3h ago•122 comments

Banned Book Library in a Wi-Fi Smart Light Bulb

https://www.richardosgood.com/posts/banned-book-library/
357•sohkamyung•10h ago•189 comments

Iroh 1.0

https://www.iroh.computer/blog/v1
1151•chadfowler•17h ago•349 comments

Understanding the rationale behind a rule when trying to circumvent it

https://devblogs.microsoft.com/oldnewthing/20260611-00/?p=112415
15•tosh•1h ago•1 comments

Ask HN: Has anyone replaced Claude/GPT with a local model for daily coding?

948•cloudking•18h ago•424 comments

Show HN: Garden of Flowers – an archive of pictorial typography before ASCII art

https://garden-of-flowers.heikkilotvonen.com/
65•california-og•4h ago•11 comments

TinyWind: A pixel pirate sailing game with real wind physics (380k+ kms sailed)

https://tinywind.io
804•tinywind•16h ago•152 comments

I hacked into the worst e-bike and fixed it [video]

https://www.youtube.com/watch?v=hPrtVGimBYs
82•alexis-d•5d ago•34 comments

I Love the Computer

https://michaelenger.com/blog/i-love-the-computer/
220•speckx•12h ago•132 comments

Humanity isn't ready for the coming intelligence explosion

https://www.economist.com/by-invitation/2026/06/15/humanity-isnt-ready-for-the-coming-intelligenc...
85•andsoitis•6h ago•222 comments

Cohere's First Model for Developers

https://cohere.com/blog/north-mini-code
84•hmokiguess•4d ago•20 comments

Why I email complete strangers

https://www.goodinternetmagazine.com/why-i-email-complete-strangers/
144•karakoram•10h ago•62 comments

Hetzner Price Adjustment

https://docs.hetzner.com/general/infrastructure-and-availability/price-adjustment/#cloud-servers
424•tuhtah•19h ago•582 comments

My Homelab AI Dev Platform

https://rsgm.dev/post/ai-dev-platform/
303•rsgm•17h ago•52 comments

Peopleless economy? Not technically impossible

https://gmalandrakis.com/writings/ad-economicum.html
175•l0new0lf-G•11h ago•302 comments

Amazon Announces Multibillion-Dollar Data Center in Missouri

https://www.narracomm.com/amazon-announces-multibillion-dollar-data-center-in-missouri/
106•thelonelyborg•8h ago•93 comments

What job interviews taught me about Kubernetes

https://notnotp.com/notes/what-job-interviews-taught-me-about-kubernetes/
175•chmaynard•12h ago•129 comments

Fox to buy Roku

https://www.wsj.com/business/deals/fox-roku-deal-f6e564f9
316•thm•19h ago•390 comments

Copper transport drug restores memory and clears toxic Alzheimer's proteins

https://www.monash.edu/news/articles/copper-drug-restores-memory-and-clears-toxic-alzheimers-prot...
296•bookofjoe•17h ago•108 comments

Show HN: SharkClean MCP

https://github.com/a-funk/sharkclean-mcp
5•afunk•3d ago•0 comments

What every coder should know about gamma (2016)

https://blog.johnnovak.net/2016/09/21/what-every-coder-should-know-about-gamma/
96•sph•2d ago•28 comments

Salesforce to Acquire Fin (formerly Intercom) for $3.6B

https://www.salesforce.com/news/press-releases/2026/06/15/salesforce-signs-definitive-agreement-t...
304•colesantiago•20h ago•224 comments

Reviews have become expensive, rewrites have become cheap

http://ishmeetbindra.com/posts/reviews-have-become-expensive-rewrites-have-become-cheap/
63•arzh2•8h ago•52 comments

Game Engine White Papers: Commander Keen

https://forgottenbytes.net/commander_keen.html
202•mfiguiere•14h ago•67 comments

The 90-year-old idea behind JEPA models: Canonical Correlation Analysis

https://shonczinner.github.io/posts/embedding-prediction/
48•Anon84•4d ago•8 comments

How TimescaleDB compresses time-series data

https://roszigit.com/en/blog/timescaledb-compression-hypercore
148•lkanwoqwp•15h ago•18 comments

Claude Corps

https://www.anthropic.com/news/claude-corps
130•Mustan•15h ago•85 comments

Launch HN: Drafted (YC P26) – Models for residential architecture

53•PrimalNick•16h ago•58 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...)