HackerTube.dev

"Performance (Really) Matters" with Emery Berger

Association for Computing Machinery (ACM) · 7.1K views · 2020-10-28 · 1:04:48

Open on YouTube ↗

If playback is restricted in your region, try opening the original video. Use Mark watched to add it to your marked videos.

Overview

Emery Berger argues that performance is hard to measure and deliver on modern systems, showing how code layout and link order can swamp optimization effects. He presents tools that evaluate performance more reliably.

On Hacker News

HN points to it whenever benchmarking pitfalls and layout effects come up, as an eye-opening talk on how unreliable naive measurements are.

Recommended by 3 HN people across 4 months · HN mentions 2022–2026

Topics

Software performance & optimizationCompilers, interpreters & program analysis
Search by tags
benchmarkingcode layoutcompilersprofilingsystems

What people said

reitzensteinm · 2024-01 · Strong recommendation

If you're measuring performance and haven't seen this talk by Emery Berger, I highly recommend it. It's mind blowing, but also terrifying when you realize how many mistakes you've been making up until this point. [VIDEO]

Read the original HN comment ↗
vanderZwan · 2026-06 · Recommendation

I think you're better off watching any of the various recordings "Performance Matters" conference talks[0] by Emery Berger to learn about all the ways that developers are benchmarking the wrong thing using the wrong techniques, and what you could do instead [0] [VIDEO]

Read the original HN comment ↗
sitkack · 2025-01 · Recommendation

If you enjoy the science of injecting slowness to determine which component has the largest impact on performance, you would enjoy this work by Emery Berger. Coz: Finding Code that Counts with Causal Profiling [LINK] "Performance (Really) Matters" with Emery Berger [VIDEO]

Read the original HN comment ↗

Sources

Video by Association for Computing Machinery (ACM), played through YouTube.

Data and selection notes

HN summaries and labels may contain AI errors. HN dates refer to discussions, not video publication.

HN Library: HackerTube export (2026-10-31) and open-index/hacker-news. Upstream summaries and classifications may contain AI errors.

Views, duration and playback status refresh separately from the published catalog. When an update fails, existing data remains visible.

Selection checks
  • SaaS & AI candidates: Topic keywords do not match
  • Editor-approved picks: Editorial review is required

Rule matches identify candidates. They do not guarantee video quality or financial results.

About the library and its sources