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Installing SSHPASS

SSHPass is a tiny utility, which allows you to provide the ssh password without using the prompt. This will very helpful for scripting. SSHPass is not good to use in multi-user environment. If you use SSHPass on your development machine, it don't do anything evil.

Installing on Ubuntu

apt-get install sshpass

Installing on OS X

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using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class InfiniteMovingBelt : MonoBehaviour
{
    public GameObject item;
    public float speed = -1f;
    public float spawnOffsetFromScreen = 1f;
    public float destroyOffsetFromScreen = 1f;

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Result: ESP 8266 Load Test

This are the raw data I collected from the load test.

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const http = require('http');

const printHeaders = (() => {
  let printed = false
  return () => {
    if (printed) return
    console.log('timestamp, kbps')
    printed = true;
  }
})();

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# add the email package
meteor add email

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The prep-script.sh will setup the latest Node and install the latest perf version on your Linux box.

When you want to generate the flame graph, run the following (folder locations taken from install script):

sudo sysctl kernel/kptr_restrict=0

perf record -i -g -e cycles:u -- ~/sources/node/node --perf-basic-prof script.js

perf script | egrep -v "( __libc_start| LazyCompile | v8::internal::| Builtin:| Stub:| LoadIC:|\[unknown\]| LoadPolymorphicIC:)" | sed 's/ LazyCompile:[*~]\?/ /' | ~/sources/FlameGraph/stackcollapse-perf.pl > out.perf-folded

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V8 Mem Test

This is test about, how V8 caches internal objects and how it affects with the Memory. But there is no good way to findout the exact amount of memory used by given set of objects without profiling. So, we are using gc() with following steps to pick a decent value.

For that, you need to run following scripts with --expose gc NodeJS option.

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module.exports = {
  webpack: function (cfg) {
    cfg.plugins = cfg.plugins.filter(plugin => {
      return plugin.constructor.name !== 'UglifyJsPlugin';
    });

    return plugin
  }
}

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{
  "scripts": {
    "dev": "next",
    "build": "next build",
    "export": "next export"
  } 
}

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const express = require('express')
const next = require('next')

const dev = process.env.NODE_ENV !== 'production'
const app = next({ dev })
const handle = app.getRequestHandler()

app.prepare()
.then(() => {
  const server = express()