shamshirz

### CMD Example : Partition & Cover (73s)
# MIX_TEST_PARTITION=1 MIX_DEBUG=1 mix test test/crowbar/scan/vciso_card_test.exs --partitions 2 --cover > tmp.txt && elixir ./analyze.exs
#
# Total Running time: 73.277s
# Total Test time: 54.554s
# Partial test time: 5.2s
# Unaccounted for test time: 49.354s

# Note: The total time isn't right because some of the steps are nested, meaning duplicate counts of time
# eg. start deps.loadpaths, start archive.check, end archive.check Xms, end deps.loadpaths X+Yms

shamshirz

# `elixir git_log_cruncher.exs`
Mix.install([
  {:timex, "~> 3.5"}
])

defmodule PR do
  defstruct [:hash, :number, :title, :file_count, :insertions, :deletions]

  @type t() :: %{
          hash: String.t(),

shamshirz

defmodule App.Application do
  …
  @impl true
  def start(_type, _args) do
    children = [
      …
      {App.ScanTracker, []} # <- Add this line
    ]
    opts = [strategy: :one_for_one, name: App.Supervisor]
    Supervisor.start_link(children, opts)

shamshirz

defmodule A do
  @moduledoc """
  # Run yourself my doing a `mix new example` and then copying these files in a.ex, b.ex, c.ex, c2.ex
  # Start - show incremental compile works
    * mix compile

  # Add `elixirc_options: [verbose: true],` to mix.exs
    * mix compile

  # Change A, recompile

shamshirz

import asyncio
import time


async def await_sleep():
    await asyncio.create_task(sleep())


async def await_multiple():
    task1 = asyncio.create_task(sleep())

shamshirz

# How did you discover the issue?

  # Elixir
  # 15:22:11.284 [error] GenServer #PID<0.3763.0> terminating
  #** (DBConnection.ConnectionError) tcp connect (localhost:5432): connection refused - :econnrefused

  # psql
  # psql -h 127.0.0.1 -d postgres -U postgres -d crowbar_test

# Hunches about what went wrong. Homebrew upgrade or OS upgrade corrupted the data. We did something foolish?