yoshuawuyts

---

created: 2025-03-22 daily: "[[2025-03-22, Wk 12 - Sat]]" tags:

• ”notes” origin:
• "[[34.24.0005 Stop rate limiting! Capacity management done right]]"
• "[[34.21.0001.00 Systems Performance]]"
• https://en.wikipedia.org/wiki/Little%27s_law similar to:

yoshuawuyts

Layers

¹ ² ³     ⁴ ⁵ ⁶        ¹mdi      ⁴sym
                       ²nav      ⁵num
                       ³mou      ⁶fun

0. Base

yoshuawuyts

# install dependencies
cargo install wasm-tools auditable2cdx wkg

# fetch the Rust http sample
wkg oci pull ghcr.io/bytecodealliance/sample-wasi-http-rust/sample-wasi-http-rust:latest -o sample.wasm
ls

# print the metadata, including all dependencies
wasm-tools metadata show sample.wasm | less

yoshuawuyts

Tomato soup

• 2 28oz cans whole peeled tomato
• 1 medium red onion, chopped
• 30-40g or 8 cloves sliced garlic
• 50-60g or 4Tbsp (a very long squeeze) olive oil
• 15g or 2 1/2tsp salt
• 15g or 3 2/3tsp sugar
• 750g/mL or 3c chicken stock (+ additional 75g or so to thin soup if needed)
• 40g or 3Tbsp tomato paste

yoshuawuyts

#![cfg(target_os = "macos")]

use rustix::event::kqueue;
use std::io::{Read, Write};
use std::net::{TcpListener, TcpStream};
use std::os::fd::AsRawFd;
use std::time::Duration;

fn main() {
    // kickoff a simple echo server we can hit for demo purposes

yoshuawuyts

#|

Written by Chuck in 2024
https://bogorad.github.io/

Based on the brilliant Miryoku_kmonad => Kinesis layout
https://github.com/manna-harbour/miryoku_kmonad

With enormous help from the author of Kanata
https://github.com/jtroo

yoshuawuyts

{
    "description": "Change caps_lock to left_control if pressed with other keys, change caps_lock to escape if pressed alone.",
    "manipulators": [
        {
            "from": {
                "key_code": "caps_lock",
                "modifiers": {
                    "optional": [
                        "any"
                    ]

yoshuawuyts

CADR per person

Clean Air Delivery Rate per person - How much clean air do we need to feed into a room?

Location	m3/hr/person
Dining	102
Gym	136
Classroom	68
Convention	102

yoshuawuyts

//! This module handles the conversion from `Pollable` -> `Future`. We do this
//! by creating an equivalent implementation to the `polling` crate. Once
//! https://github.com/smol-rs/polling/issues/102 has been resolved, this module
//! will likely no longer be needed.

use slab::Slab;
use std::mem;
use wasi::io::poll::{poll, Pollable};

/// Waits for I/O events.

yoshuawuyts

Concurrency vs Parallelism, in table form

Concurrency is a system-structuring mechanism, parallelism is a resource. (ref)

There's an important distinction between "parallelism" as a resource, and "parallel execution". The two are often confused, but they are in fact distinct. The key separator is "concurrency":

	no parallelism	has parallelism
no concurrency	sequential execution	sequential execution †
has concurrency	concurrent execution ‡	parallel execution