Rpi – a Rust rewrite of the Pi agent, 10× faster startup

I've been learning about the Pi agent and decided to rewrite it in Rust. Now that I've finished a lot of the work, I'd like to show how much faster Rust (rpi) is than TypeScript (Pi). Here are the results:

| Metric | rpi (Rust) | Pi (TypeScript) | Difference | |:---|:---|:---|:---| | `--version` | 17.5 ms | 169.5 ms | 9.7× faster | | Cold start | 17.7 ms | 189.5 ms | 10.7× faster | | RSS when ready | 12.0 MiB | 91.5 MiB | 7.6× smaller | | Install size | 21.8 MiB | ~385 MiB | ~18× smaller |

Rust is really cool!

2 points | by bigfishhk 2 hours ago

3 comments

  • vincent-uden 2 hours ago
    This kind of invalidate the pitch of Pi, the self-modifying harness. You can't use the Pi extensions I'm assuming...

    Without a plan of your own for extensions this is comparing apples to oranges. My Pi startup time is dominated by loading extensions and skills, and I don't even have many to begin with!

    (It seems like there is a pluging API judging by the Github repo. That wasn't linked in the comments by the time of my writing)

    [-]
  • voidUpdate 2 hours ago
    That name won't be confusing at all
  • bigfishhk 2 hours ago
    github repo: https://github.com/bigfish1913/pi-rust