HackerTube

THE VIDEO SHELF · performance measurement

"Performance (Really) Matters" with Emery Berger

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.

Watch & explore the libraryYouTube ↗

Why HN readers recommended it

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

This is a summary from the source dataset, not an endorsement by Hacker News or the video creator.

Video & recommendation details

Creator / channel
Association for Computing Machinery (ACM)
Topic
performance measurement
Format
talk
Level
advanced
HN recommenders in dataset
3
HN mentions in dataset
7
Recommendation years in dataset
2022–2026

These counts and years describe the included Hacker News records; they are not YouTube views or the video’s publication date.

From the original HN conversations

Excerpts from the recorded comments. Follow each source for the full comment and surrounding discussion.

  • 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]

    reitzensteinm on Hacker News · 2024-01
    In When Optimising Code, Measure

  • > The main trap is trying to benchmark and profile it without the context of the whole application. Emery Berger's "Performance (Really) Matters" talk also goes into this[0]. He paints a really, really depressing picture of how unreliable benchmarks truly are. Like, things like link …

    vanderZwan on Hacker News · 2022-12
    In Fast memcpy, A System Design

  • 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]

    sitkack on Hacker News · 2025-01
    In Disabling Zen 5's Op Cache and Exploring Its Clustered Decoder

Summaries, classifications and recommendation records are from the HackerTube source dataset. Read about this library and its limitations.

Keep exploring