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xfs

HN member
Joined
Mon, Jan 10, 2011, 8:43 PM UTC
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720
Public activity
197 items

About xfs

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Recent public activity

  1. comment
    Comment #35894535

    https://youtu.be/_qaKkHuHYE0 (CppCon) A senior software engineer at Google tried to optimize tcmalloc by replacing a mutex with lockless MPMC queue. After many bugs and tears, the …

  2. comment
    Comment #33402226

    KCP uses a brute force congestion control algorithm that is unfair and inefficient. It is also poorly specified, which is probably why it is less commonly used outside circumventio…

  3. comment
    Comment #31291977

    From Steve Yegge: What really happened is that China hacked Google, and it pissed Google off when they finally discovered it, many months later. This wasn’t some small intrusion or…

  4. comment
    Comment #31236292

    Sure, it's common to have it working for a long time, because breaking changes and interactions between different systems occur very infrequently at the level of bootloader and fir…

  5. comment
    Comment #31235351

    I have used EFISTUB for 10 years but I wouldn't recommend it for the next install. The bootloader is the one arcane place that you don't want to be clever with and get reminded of …

  6. comment
    Comment #31055127

    OK, maybe "Turing test" was a bad hint because too often its extension turns into a philosophical rabbit hole of defining intelligence. I want to get back to your initial statement…

  7. comment
    Comment #31053385

    The Heideggerian point is a start, but I don't think it's enough to just point out a failure like this. This allegation is something like "The answer is already encoded in the ques…

  8. comment
    Comment #31053130

    Human can't visualize a tesseract, but human can conceptualize the Idea of a tesseract in the symbolic space, by math, physics, or in other words, by Reason. The Symbolic is a radi…

  9. comment
    Comment #31052337

    Plenty of RL systems learn to play video games just fine without fine-tuned rewards, but I see this line of thought isn't actually what you're getting at. I would assume serious ML…

  10. comment
    Comment #26365230

    These are all unified as different modes of message passing in probabilistic graphical models. Kalman filters are indeed structurally similar to an HMM without the backward message…

  11. comment
    Comment #25189274

    I find Yanis Varoufakis' account of the history leading up to the collapse of Bretton Woods very telling: As the combined costs of the Vietnam War and the Great Society began to mo…

  12. comment
    Comment #25015957

    Can you comment on the tradeoffs between indirect TOF (phase) and direct TOF (time), what made Apple opt for direct TOF here, is it Microsoft's patents?

  13. comment
    Comment #24925358

    Why though? Realtime systems, games would love to disable exceptions.

  14. comment
    Comment #24919353

    Chromium's base, which is like STL but better and more feature rich, also with an excellent code browser https://source.chromium.org/chromium/chromium/src/+/master:b... . Also Goog…

  15. comment
    Comment #24106321

    I highly recommend doing some reading about Wallerstein's world systems theory and Kojin Karatani's The Structure of Empire , from which Jiang obviously drew his influence. If you …

  16. comment
    Comment #23205335

    I stopped using it for locals after it increased my mental load. The maintenance cost of const for all local variables is huge during refactor like you're fighting it just to get t…

  17. comment
    Comment #23204654

    Folds are not complicated. They are just not familiar to the intended readers. The changed version is idiomatic in image processing or similar areas that deal with pixels. Being id…

  18. comment
    Comment #23204580

    If you as a reader need const to make sure a local variable is not changed this is usually a symptom of this function being too long to see at a glance. And quite often as code cha…

  19. comment
    Comment #23203839

    I love C++17 fold expression, but... Local consts are not particularly useful, especially for things like ints. Compilers know it's const, and a reader doesn't need to worry about …

  20. comment
    Comment #23203051

    Good writeup, but is there any mitigation for TLS shootdowns?

  21. comment
    Comment #23202194

    Is it correct to think of it as application code running as PID 1 in kernel space? Can I fork or create threads? Can I directly access kernel's internal APIs like a kernel module?

  22. comment
    Comment #23202108

    Recently I found out ebpf jitting will cause interprocessor interrupts even with all the isolation configs available today. There's probably many more places where such interrupts …

  23. comment
    Comment #23200196

    It's all in the game, yo.

  24. comment
    Comment #23075541

    If you had the correct source you'd know the reporting system about pneumonia of unknown etiology you mentioned was not put into use until mid-January much to the disappointment of…

  25. comment
    Comment #23065222

    This is the kind of false argument being thrown around often in OSS discourse that ignores the structural power differential. Don't like it? Write your own/Leave. The fact is you c…