Hacker News: javierhonduco

New comment by javierhonduco in "Eight years of wanting, three months of building with AI"

javierhonduco — Sun, 05 Apr 2026 17:45:54 +0000

Great write-up. As a side note (not a Googler myself and this is 100% my opinion) Lalit’s team was hiring in London, UK. If you are interested in working in low level performance tools, this might be a very cool opportunity!

Debunking Zswap and Zram Myths

javierhonduco — Tue, 24 Mar 2026 10:39:21 +0000

Article URL: https://chrisdown.name/2026/03/24/zswap-vs-zram-when-to-use-what.html

Comments URL: https://news.ycombinator.com/item?id=47500746

Points: 215

# Comments: 61

New comment by javierhonduco in "Bombadil: Property-based testing for web UIs"

javierhonduco — Mon, 23 Mar 2026 17:35:11 +0000

Super cool project! Curious on how this compares to Meticulous in terms of functionality and approach. Thanks!

New comment by javierhonduco in "Anthropic acquires Bun"

javierhonduco — Tue, 02 Dec 2025 23:41:16 +0000

Wondering to what degree this was done to support Anthropic’s web crawler. Would assume that having a whole JS runtime rather than just a HTTP client could be rather useful. Just hypothesising here, no clue what they use for their crawler.

New comment by javierhonduco in "ARM Memory Tagging: how it improves C/C++ memory safety (2018) [pdf]"

javierhonduco — Sat, 25 Oct 2025 21:09:46 +0000

I am incredibly happy that Apple has added MTE support to the latest iPhones and perhaps the M5 chips as well (?). If that’s the case I don’t think any other personal computers have anything close to Apple machines in terms of memory safety and related topics (Secure Enclave etc).

Hope other vendors will ship MTE in their laptop and desktop chips soon enough. While I’m very positive about x86_64 adding support for this (ChkTag), it’ll definitely take a while…

In my opinion a worthwhile enough reason to upgrade but feels like a waste given my current devices work great.

At Google, the future is multiarch; AI and automation are helping us get there

javierhonduco — Wed, 22 Oct 2025 09:47:44 +0000

Article URL: https://cloud.google.com/blog/topics/systems/using-ai-and-automation-to-migrate-between-instruction-sets

Comments URL: https://news.ycombinator.com/item?id=45666810

Points: 2

# Comments: 1

Making the Clang AST Leaner and Faster

javierhonduco — Tue, 21 Oct 2025 15:31:45 +0000

Article URL: https://cppalliance.org/mizvekov,/clang/2025/10/20/Making-Clang-AST-Leaner-Faster.html

Comments URL: https://news.ycombinator.com/item?id=45657050

Points: 2

# Comments: 0

New comment by javierhonduco in "We found a bug in Go's ARM64 compiler"

javierhonduco — Wed, 08 Oct 2025 15:06:06 +0000

Really enjoyed reading this. Thanks for writing it!

New comment by javierhonduco in "Meta announces 5% cuts in preparation for 'intense year'"

javierhonduco — Tue, 14 Jan 2025 17:52:41 +0000

These metrics can be used in performance reviews at Facebook.

New comment by javierhonduco in "Ghostty 1.0"

javierhonduco — Thu, 26 Dec 2024 20:41:30 +0000

Zig 0.13 is required according to https://ghostty.org/docs/install/build

New comment by javierhonduco in "Navtive FlameGraphViewer"

javierhonduco — Wed, 25 Dec 2024 20:02:51 +0000

This is pretty cool work.

Something that’s been on my mind recently is that there’s a need of a high-performance flame graph library for the web. Unfortunately the most popular flame graph as a library / component, basically the react and d3 ones, work fine but the authors don’t actively maintain them anymore and their performance with large profiles is quite poor.

Most people that care about performance either hard-fork the Firefox profiler / speedscope flame graph component or create their own.

Would be nice to have a reusable, high performance flame graph for web platforms.

New comment by javierhonduco in "Rust needs a web framework"

javierhonduco — Mon, 07 Oct 2024 09:37:38 +0000

Axum + minijinja is quite close to this I would say. Been using it for a little while and I am very happy so far.

New comment by javierhonduco in "Okay, I Like WezTerm"

javierhonduco — Mon, 12 Aug 2024 22:08:02 +0000

Haven’t had the chance to play with WezTerm just yet but wanted to share that the author is an incredibly smart, friendly, and humble.

Had the opportunity to work on a project together at work some years back and I can only aspire to be 1/10th as good of an engineer as him. A true hacker.

Low Impact Website

javierhonduco — Mon, 22 Jul 2024 16:02:16 +0000

Article URL: https://jasonheppler.org/low-impact/

Comments URL: https://news.ycombinator.com/item?id=41035949

Points: 1

# Comments: 0

New comment by javierhonduco in "No More Blue Fridays"

javierhonduco — Mon, 22 Jul 2024 15:49:39 +0000

Or in other parts of the kernel. It's been the case in multiple occasions that buggy locking (or more generalised, missing 'resource' release) has caused problems for perfectly safe BPF programs. For example, see https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1033398 and the fix https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/lin...

New comment by javierhonduco in "No More Blue Fridays"

javierhonduco — Mon, 22 Jul 2024 15:43:11 +0000

It is not, programs that are accepted are proved to terminate. Large and more complex programs are accepted by BPF as of now, which might give the impression that it's now Turing complete, when it is definitely not the case.

New comment by javierhonduco in "I have no constructor, and I must initialize"

javierhonduco — Fri, 05 Jul 2024 18:43:29 +0000

It’s easy to miss this in large codebases. Having to check every single struct initalisation whenever a field is added is not practical. Some folks have mentioned that linters exist to catch implicit initialisation but I would argue this shouldn’t require a 3rd party project which is completely opt-in to install and run.

New comment by javierhonduco in "I have no constructor, and I must initialize"

javierhonduco — Fri, 05 Jul 2024 14:29:16 +0000

Personally I’m not a fan of Go’s default zero-initialisation. I’ve seen many bugs caused by adding a new field, forgetting to update constructors to intialise these fields to “non-zero” values which caused bugs. I prefer Rust’s approach where one has to be explicit.

That being said it’s way less complex than C++’s rules and that’s welcomef.

Unexpected Profiling Use Cases Beyond Performance Optimization

javierhonduco — Tue, 28 May 2024 11:29:33 +0000

Article URL: https://blog.felixge.de/8-unexpected-profiling-use-cases-beyond-performance-optimization/

Comments URL: https://news.ycombinator.com/item?id=40499645

Points: 2

# Comments: 0

New comment by javierhonduco in "Fault tolerance and resilience patterns for Go"

javierhonduco — Sun, 24 Mar 2024 19:53:37 +0000

This looks incredibly comprehensive, thanks for sharing!

Should have added that I read this book in 2016, and the first edition is even older, so there’s naturally been lots of new (and exciting) developments in this area!