BrennanConroy

Sampling process 91708 for 3 seconds with 1 millisecond of run time between samples
Sampling completed, processing symbols...
Analysis of sampling dotnet (pid 91708) every 1 millisecond
Process:         dotnet [91708]
Path:            /Users/asplab/.dotnet/dotnet
Load Address:    0x1007c3000
Identifier:      dotnet
Version:         0
Code Type:       X86-64
Parent Process:  dotnet [91706]

BrennanConroy

{
  "Logging": {
    "Default": {
      "LogLevel": {
        "Microsoft.AspNetCore": "Critical",
        "System": "Warning"
      }
    },
    "DebugLogger": { // do these override "Default" section above?
      "LogLevel": {

BrennanConroy

var nagle = new NagleTimer();

while (true)
{
	var result = await reader.ReadAsync();
	var buffer = result.Buffer;

	try
	{
		if (!buffer.IsEmpty)

BrennanConroy

class transport
{
  void start(std::string url, transfer_format format, std::function<void(std::exception_ptr)> callback);

  void stop(std::function<void(std::exception_ptr)> callback);
  void on_close(std::function<void(std::exception_ptr)>);

  void send(std::string payload, std::function<void(std::exception_ptr)> callback);

  void on_receive(std::function<void(std::string, std::exception_ptr)> callback);

BrennanConroy

Intro: always measure first and test after

Start simple:

• class vs. struct

• pre-alloc container sizes if possible

• string.Substring(1, 10);

• stackalloc byte[]/Span

• for loops vs. foreach loops

BrennanConroy

using System;
using System.Collections.Generic;
using System.Net.WebSockets;
using System.Threading.Tasks;

namespace ConsoleApp
{
    internal class Program
    {
        public static async Task Main(string[] args)