Overview

Goal

• Maintain a loading time of less than 2 seconds by identifying and eliminating bottlenecks, and measuring web page loading time daily.

General Plan

• Maintain list of URLs of pages to test.
• launchd to run daily task that requests webpagetest for each url.
• Save results to a local mongo db.
• Create a useful graph to keep track of web page performance.
• Review graphs daily, prioritize development, alerts for any performance issues.

Measures

Data we are graphing

Page loading events -v2

• First Byte = "TTFB" - The time until the first byte of the base page is returned (after following any redirects)
• "titleTime" - title displays in the browser
• Start Render = "firstPaint" or "render" - first non-white content was painted to the screen
• Load Event Start = "loadEventStart" - browser reported time of the start of the load event from the W3C Navigation Timing
• Document Complete = "loadTime", "docTime" - The time until the onload event was fired (as measured by WebPagetest, not Navigation Timing)
• Fully Loaded - "fullyLoaded" - The time until network activity finished after the onload event (all assets loaded)

Stats

• Bytes In (Doc) = "bytesInDoc" - The number of bytes downloaded before the Document Complete time
• Requests (Doc) = "requestsDoc" - The number of http(s) requests before the Document Complete time

Data added for each page

• "page" : -- "brand" : "Bedford + Bowery" -- "type" : "homepage" -- "url" : "http://bedfordandbowery.com/"

All Data available through webpagetest API

• https://sites.google.com/a/webpagetest.org/docs/advanced-features/raw-test-results
• "URL" : "http://bedfordandbowery.com/"
• "loadTime" : 22276
• "TTFB" : 1213
• "bytesOut" : 62898
• "bytesOutDoc" : 40282
• "bytesIn" : 1828058
• "bytesInDoc" : 1755478
• "connections" : 86
• "requests" : 128
• "requestsDoc" : 93
• "responses_200" : 111
• "responses_404" : 0
• "responses_other" : 9
• "result" : 99999
• "render" : 1987
• "fullyLoaded" : 23380
• "cached" : 0
• "docTime" : 22276
• "domTime" : 0
• "score_cache" : 29
• "score_cdn" : 34
• "score_gzip" : 100
• "score_cookies" : 82
• "score_keep-alive" : 95
• "score_minify" : 100
• "score_combine" : 0
• "score_compress" : 73
• "score_etags" : 55
• "gzip_total" : 947903
• "gzip_savings" : 0
• "minify_total" : 336065
• "minify_savings" : 0
• "image_total" : 846176
• "image_savings" : 220856
• "optimization_checked" : 1
• "aft" : 0
• "domElements" : 1430
• "pageSpeedVersion" : 1.12
• "title" : "Bedford + Bowery"
• "titleTime" : 1330
• "loadEventStart" : 22302
• "loadEventEnd" : 22394
• "domContentLoadedEventStart" : 3920
• "domContentLoadedEventEnd" : 4007
• "lastVisualChange" : 23009
• "browser_name" : "Internet Explorer"
• "browser_version" : "9.0.8112.16421"
• "server_count" : 1
• "server_rtt" : 37
• "adult_site" : 0
• "fixed_viewport" : -1
• "score_progressive_jpeg" : 17
• "firstPaint" : 1963
• "docCPUms" : 5538.036
• "fullyLoadedCPUms" : 6505.242
• "docCPUpct" : 25
• "fullyLoadedCPUpct" : 26
• "isResponsive" : -1
• "date" : 1390900677
• "SpeedIndexDT" : 9699
• "SpeedIndex" : 9699
• "VisuallyCompleteDT" : 23009
• "visualComplete" : 23009
• "renderDT" : 1993
• "effectiveBps" : 82467
• "effectiveBpsDoc" : 83344

Setup

Install App

• Install dependencies: mongodb and node.js.
• Clone this repo.
• npm install
• Obtain an appKey from webpagetest.org and save to /key.js

Schedule Machine Wake Up

• sudo pmset repeat wakeorpoweron MTWRFSU 09:05:00
• pmset -g sched
• or you can do this in system settings > energy saver > schedule

Add commands to launchd

Add mongo .plist file

• sudo nano /Library/LaunchAgents/org.mongodb.mongod.root.plist
• paste in:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
  <key>Label</key>
  <string>org.mongodb.mongod.root</string>
  <key>ProgramArguments</key>
  <array>
    <string>/Users/mcroney/_dev/mongo/bin/mongod</string>
    <string>--port</string>
    <string>55555</string>
  </array>
  <key>RunAtLoad</key>
  <false/>
  <key>KeepAlive</key>
  <false/>
  <key>UserName</key>
  <string>mcroney</string>
  <key>WorkingDirectory</key>
  <string>/Users/mcroney/_dev</string>
  <key>StandardErrorPath</key>
  <string>/Users/mcroney/_dev/webpagetest/mongodb-output.log</string>
  <key>StandardOutPath</key>
  <string>/Users/mcroney/_dev/webpagetest/mongodb-output.log</string>
  <key>StartCalendarInterval</key>
  <dict>
    <key>Hour</key>
    <integer>9</integer>
    <key>Minute</key>
    <integer>10</integer>
  </dict>
</dict>
</plist>

Add node app .plist file

• sudo nano /Library/LaunchAgents/com.webpagetest.performance.root.plist
• paste in:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
  <key>Label</key>
  <string>com.webpagetest.performance.root</string>
  <key>ProgramArguments</key>
  <array>
    <string>/usr/local/bin/node</string>
    <string>/Users/mcroney/_dev/webpagetest/app.js</string>
  </array>
  <key>RunAtLoad</key>
  <false/>
  <key>KeepAlive</key>
  <false/>
  <key>UserName</key>
  <string>mcroney</string>
  <key>WorkingDirectory</key>
  <string>/Users/mcroney/_dev</string>
  <key>StandardErrorPath</key>
  <string>/Users/mcroney/_dev/webpagetest/output.log</string>
  <key>StandardOutPath</key>
  <string>/Users/mcroney/_dev/webpagetest/output.log</string>
  <key>StartCalendarInterval</key>
  <dict>
    <key>Hour</key>
    <integer>9</integer>
    <key>Minute</key>
    <integer>15</integer>
  </dict>
</dict>
</plist>

unload & load the launchd files (may need to repeat on hard restart)

• sudo launchctl unload /Library/LaunchAgents/org.mongodb.mongod.root.plist
• sudo launchctl unload /Library/LaunchAgents/com.webpagetest.performance.root.plist
• sudo launchctl load /Library/LaunchAgents/org.mongodb.mongod.root.plist
• sudo launchctl load /Library/LaunchAgents/com.webpagetest.performance.root.plist