krisselden

/* eslint-env node */
const { Session } = require('inspector');
const fs = require('fs');

const captureExit = require('capture-exit');

captureExit.captureExit();

/** @param exitPromise {Promise<void>} */
async function runProfile(exitPromise) {

krisselden

import Controller from '@ember/controller';

export default class ApplicationController extends Controller {
  appName = 'Ember Twiddle';
}

krisselden

jq '.traceEvents | map(select(.cat | split(",") | map(. == "devtools.timeline") | any)) | unique_by(.name) | map(.name)'
jq ".traceEvents | map(select(.ts == 0)) | map(.ph) | unique"

krisselden

import Component from "@glimmer/component";
import { tracked } from "@glimmer/tracking";
import { action } from "@ember/object";

class Cell {
  @tracked value;
  constructor(key, value) {
    this.key = key;
    this.value = value;
  }

krisselden

V8 v7.0 and Chrome 70

node stable sort / timsort
build
55360
7.0.257

node v11.0.0
7.0.276.28-node.5
node v11.15.0

krisselden

function createQueue() {
  let queue = [];
  let i = 0;
  let len = 0;
  return [
    (fn) => (queue[len++] = fn),
    () => {
      try {
        for (; i < len; i++) {
          const fn = queue[i];

krisselden

/* eslint-disable @typescript-eslint/no-unsafe-return */
/* eslint-disable @typescript-eslint/no-unsafe-assignment */

/*
This helper module allows us to import from the module under test
while using the package conditional exports of "import" if supported
or falling back to package "main" if not supported.

Which lets us run the same test suite on both exports to ensure that
it works on Node < 12.17.0 or newer node using require or import.

krisselden

#!/usr/bin/env Rscript

# real load samples
a <- c(1075, 1043, 964, 965, 1067, 1111, 929, 1016, 983, 998, 995, 994, 995, 1064, 1025, 1078, 987, 998, 992, 1094, 965, 993, 1022, 964, 1002, 926, 1408, 1083, 944, 988, 960, 979, 939, 936, 990, 947, 1037, 1034, 1057, 1095, 1015, 941, 1054, 1050, 1192, 973, 1321, 1051, 974, 906)
b <- c(1023, 1175, 1230, 1055, 1073, 1118, 1030, 1093, 1095, 1040, 1166, 1257, 1151, 1047, 1217, 1247, 1256, 1057, 1152, 1074, 1016, 1040, 1176, 1135, 1003, 1178, 1136, 1402, 1215, 1176, 1107, 1202, 1080, 1068, 1133, 1091, 1041, 1143, 1140, 1156, 1062, 1076, 973, 1048, 1183, 1165, 1246, 1225, 1174, 1063)

# the 3 param log-logistic is a good distribution for simulating typical
# performance samples from page load
dllogis <- function(x, location = 0, scale = 1, shape = 2) {
    ((shape / scale) * (((x - location) / scale)^(shape - 1))) / (

krisselden

Pass in an invocables array of c => c() that is source mapped to mustache/Component/s-exp locations during template compile.

Now anytime the VM executes something that invokes user land code that might fail it can do it with the slotted invocable wrapper in both Append mode or Update mode and with the sourcemap this will place the hbs file on the stack and allow you to set a breakpoint in the mustache, Component or subexpression.

Also, possibly make bindings thunks so they can be debugged when the VM reads them, so if they were an unexpected value you'd be able to see.

krisselden

library(tidyverse)

# sample, treatment, chunk size, timestamp
chunks <- read.csv("results.csv")

sorted_and_summed <- chunks %>%
    group_by(sample) %>%
    arrange(timestamp, .by_group = T) %>%
    mutate(
        bytes_received = cumsum(bytes),