Systems and Delays

(martin.janiczek.cz)

37 points | by vinhnx 3 hours ago

7 comments

  • bloaf 1 minute ago
    Reminds me of this piece I read on hacker news over a decade ago:

    https://mcfunley.com/whom-the-gods-would-destroy-they-first-...

  • dognotdog 1 hour ago
    In terms of control theory, the order "delay" is actually a simple filter. What leads to bad outcomes is exactly the described scenario, when the control response too fast for the system, overcorrecting and oscillating. Increasing the order filtering dampens the control response.
  • skybrian 51 minutes ago
    I think the source of confusion is that the "response delay divisor" isn't a delay at all. This parameter is the inverse of amplification. If you dampen a signal more then it will oscillate less.
  • sigbottle 37 minutes ago
    Do people actually do systems design with control theory? I know the authoritative question to possibility - yes, my company does it. But I'm wondering about say, an industry standard formalism to it, such as like how DDIA is household
    • jandrewrogers 8 minutes ago
      Somewhat, but for distributed systems I’ve found game theory to be more useful. Which does end up looking like high-order control theory in many cases.
  • milanhbs 1 hour ago
    For people interested in the related math, "Nonlinear Dynamics and Chaos" by Steven Strogatz is a great book! Pdfs abound online.
    • Avicebron 1 hour ago
      Or if you want something lighter but still fascinating "Sync" by Steven Strogatz is also good :)
  • mwcremer 2 hours ago
  • inferhaven 2 hours ago
    very interesting read, key takeaway, delays are not always bad! Definitely something to think about in 2026