It's a simple implementation of an Ember/Glimmer demo[0], which is a reimplementation of this React demo[1] from this React Conf talk[2]. [0] [link] [1] [link] [2] [this video]
Here are a few more examples collected from the Ember Glimmer thread. Original demo of Ember, Angular and React: Source: [link] Video comparison: [this video] Original Ember: [link] React: [link] Angular: [link]
> This is wrong. Naive React code is rarely fast in relative terms. Do you remember Ryan Florence's talk Hype at ReactConf 2015, where he compared React performance to that of Ember and Angular 1 [0]? Back in 2015, in relative terms, React seemed fast ! [0] [this video]
I needed improvements in Ember's rendering performance a year ago, back when performance improvements were already behind schedule. A situation which still remains in production Ember today: [this video] It's too little too late for me. I wouldn't want to touch anything Ember or anything from the authors.
Posting benchmarking without full source code is bad. And you should feel bad. I remember seeing people bashing angular 1.2/3 for its speed and then looking at their source and they weren't using some of the most powerful features cough cough react conf ( [this video] ) This ended up corrected at some point by some one who looked at the source code, forked it and made it perform on par with the react version. I don't doubt the vanilla JS is faster (in this case) but really, you need to make your source available before posting to your blog. Benchmarking in a fair way is hard, and you are damaging the public perception of a (from what I hear) a great framework. Maybe this is justified, but at least give the fanboys a chance to call you out - maybe everyone will learn something new.
Video list and Hacker News comment labels from HackerTube (prompted by @karpathy), released under ODC-By 1.0, built on the open-index/hacker-news archive. Hacker News data is provided by Y Combinator; comments remain the work of their authors. Video titles, channel names and thumbnails belong to their creators and are shown via YouTube. HackerTube Watch is an unofficial edition. Data export of 2026-10-31.
6 Hacker News comments
From the HN archive; up to 20 kept per video, favoring different commenters. Recommendations first.
Read more