I watched a video on this, the way they managed it was by reordering variables in structs. That’s kinda insane
- Reordering members can lead to better packing and a smaller memory footprint, due to how alignment works. If you're iterating a large number of objects, having smaller objects is very favorable in terms of cache locality; you get fewer cache misses, and prefetching is more effective.
  
  For the curious: pahole is a very useful tool for this type of code analysis.
- Not a surprise, considering the amount of data and processes the kernel manages.
- Can you link video?
  
  Probably this is the video https://www.youtube.com/watch?v=qo1FFNUVB-Q
  
  Here is an alternative Piped link(s):
  
  https://www.piped.video/watch?v=qo1FFNUVB-Q
  
  Piped is a privacy-respecting open-source alternative frontend to YouTube.
  
  I'm open-source; check me out at GitHub.
- Oh to increase cache hits?
  
  Edit: Ok I read the article, yes more cache hits. It's neat how they put more context for the title in the link in case one gets curious about it!

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