this post was submitted on 08 Dec 2024
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Linux

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How fast are Linux pipes anyway? (mazzo.li)
submitted 3 weeks ago by cm0002 to c/linux
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[–] [email protected] 20 points 3 weeks ago

Quality post, thanks for sharing!

[–] Zachariah 12 points 3 weeks ago

We will proceed as follows:

  1. A first slow version of our pipe test bench;
  2. How pipes are implemented internally, and why writing and reading from them is slow;
  3. How the vmsplice and splice syscalls let us get around some (but not all!) of the slowness;
  4. A description of Linux paging, leading up to a faster version using huge pages;
  5. The final optimization, replacing polling with busy looping;
  6. Some closing thoughts.