Google fixed more Chrome bugs in June than over the past two years, thanks to AI

Post by inigyou » Fri, Jul 31, 2026, 2:50 PM UTC

insanitybit wrote: post #218

WhyIsItAlwaysHN wrote: post #29

Earlier quoted context omitted.

The mistake there is to point it at code to figure out performance optimizations. The place to find them would be performance profiles, query plans, telemetry. The guidance for perf still applies, measure before and after change. The issue is that the code often does not contain the information to do a perf optimization. Eg. you can't tell your cache size, the volumes of data in your DB or the latency of your network…

You can very easily spot performance issues through code. Allocations are often visible, slower hash maps are often visible, loops are visible, etc.

Post by inigyou » Fri, Jul 31, 2026, 2:51 PM UTC

UqWBcuFx6NV4r wrote: post #95

VBprogrammer wrote: post #17

I've recently been using AI a lot for performance optimisation during a particularly busy period at work. I would say it was almost completely useless at the high-level direction - it would point out suspicious parts of SQL queries for example but on back to back testing these almost never resulted in any performance change. In fact, if it wasn't for the fact that it made making the actual changes I identified much e…

You have to learn to use your tools, not try whatever intuitively made sense to you at first (expecting the tool to do all the work) and then whining on Hacker News when it doesn’t work out for you.

Post by dpark » Fri, Jul 31, 2026, 2:53 PM UTC

RGS1811 wrote: post #259

dpark wrote: post #228

Earlier quoted context omitted.

What is bikeshedding supposed to mean here?

It comes from C. Northcote Parkinson's work, where he calls it "The Law of Triviality". The idea is that people clog up decision-making by introducing a swarm of issues that have little relative impact or importance for the project at hand, leading to a massive misallocation of attention. His example is a $10 million construction project for a Nuclear Reactor where as much time is spent debating the materials to be u…

Post by righthand » Fri, Jul 31, 2026, 2:56 PM UTC

Post by vonneumannstan » Fri, Jul 31, 2026, 2:59 PM UTC

tzone wrote: post #251

VBprogrammer wrote: post #17

I've recently been using AI a lot for performance optimisation during a particularly busy period at work. I would say it was almost completely useless at the high-level direction - it would point out suspicious parts of SQL queries for example but on back to back testing these almost never resulted in any performance change. In fact, if it wasn't for the fact that it made making the actual changes I identified much e…

Which model are you using? There is monumental difference between models. Even between "frontier models". When people tell these stories, it would be great to also add which model you were using. As an example Opus 5.0 is in completely different class compared to Cursor Grok 4.5 even if the benchmarks don't show such massive difference. Not even talking about regular stuff like Sonnet or Composer or stuff like that.