Click here to close now.


IoT User Interface Authors: Bob Gourley, Brian Daleiden, Liz McMillan, David H Deans, Trevor Parsons

Related Topics: Java IoT, IoT User Interface, @CloudExpo

Java IoT: Article

The Super Bowl Effect on Website Performance

Synthetic monitoring of a website

Whether or not you are a fan of U.S. football - it was really hard to avoid this huge sports event on February 5. In addition to the actual game, it's the Super Bowl commercials that - besides being very expensive to air - usually drive a lot of load on the websites of the companies that run their ads. The question is whether the millions of dollars spent really drive consumers to these websites and make them do business with them.

As we won't get an answer from the top brands that advertised about the actual conversion rates we can look at the End User Experience and performance of their websites while these ads were aired. By analyzing the data that we can get through continuous synthetic monitoring combined with deep dive browser diagnostics, we'll be able to see whether their web application was actually able to handle the load and didn't leave too many of these users with a bad user experience.

Use Case: What Was the User Experience at One of the Top Brands on Super Bowl Day
In order to avoid any discussions on whether the numbers we present are good or bad and mean that this company did a good or terrible job, we present all this data without giving an actual name as the purpose of this exercise is to show how to perform this type of analysis.

Synthetic Monitoring of a Web Site
In order to monitor web site performance of a site we set up a Gomez Synthetic Monitor to be executed on a scheduled basis. The monitor not only monitored the performance of the initial home page but also walked through several main use-case scenarios on that page, e.g., searched for a product. These tests were also executed from multiple U.S. locations, using low- and high-bandwidth connections and also using both the Internet Explorer and Firefox browsers. In addition we captured individual performance sessions using dynaTrace Browser Diagnostics.

The following screenshot shows the response time of the home page of this website via our Last Mile platform via a Firefox browser in the days before the Super Bowl as well as during the Super Bowl. The average page load time was around 9 seconds with the exception of the time-frame during the Super Bowl - that's when it jumped up to 30 seconds:

Synthetic Monitoring shows peak during the Super Bowl of up to 30s to load the Homepage

Analyzing Page Load Time from Monitoring Data
There were two factors that drove this spike:

  1. Higher load on their application due to the commercial aired during the Super Bowl
  2. Additional content on their page that doubled the page size

Factor 1: Higher Load
That's of course intended and a success for their marketing campaign. What you want to make sure is that you can handle the additional expected load by using CDNs (Content Delivery Networks) to deliver that static content to your end users as well as provide additional resources on your web and application servers to handle the extra load. To be prepared for that it's highly recommended that you do some up-front large scale load-testing. For more information on that you can read my recent blog posts on To Load Test or Not to Load Test: That Is Not the Question.

Factor 2: Additional Content
The average size of the home page jumped from 776kb to 1.497kb - that's double the page size. The reason for this is additional images and content that was displayed on the home page when accessed during the Super Bowl. The Gomez Monitor as well as the dynaTrace Browser Diagnostics Sessions provides detailed resource analysis that immediately highlights the additional images, stylesheets and JavaScript files. The following shows some of the additional Super Bowl-related content including size and download time:

Additional content downloaded during the Super Bowl resulting in up to 3 times higher page load times

The additional content in this case may have been necessary to fulfill the company's marketing campaign. The question is whether the additional content could have been optimized not to download 40 additional resources with a total size of > 700kb.

Deep Dive Browser Diagnostics
Looking at the dynaTrace Browser Diagnostics Data we can observe several interesting aspects.

Observation 1: Load Impact of additional resources
We can see the actual impact of these additional resources that got downloaded during the time of the game. Two of these resources took a very long time and had a major impact on page load time. The background image was delivered by their own web server and was not put on a CDN, which results in more traffic on their web servers and less than optimal performance for end users who are far away from their data centers. Another interesting aspect was an additional Facebook Like button that took 600ms to download and execute.

dynaTrace Timeline View showing the impact of additional resources on the page load time

Observation 2: Page Transition Impact of CDN User Tracking Logic
Some tracking tools out there send their data in the onbeforeunload event handler. Modern browsers actually don't allow the onbeforeunload event handlers to take too long or send any data. The workaround for this is to put in an "artificial" JavaScript loop that waits for 750ms to ensure the browser sends the AJAX Request with the tracking data before the browser navigates to the next page. We can also see this behavior on this page:

JavaScript Tracing Code from a CDN Provider adding a 750ms loop to ensure tracing data gets send before navigating to the next page

When you are responsible for a website that is going to see high user volume for a marketing campaign you want to:

  1. Make sure the additional content for that marketing campaign is optimized, e.g., make sure this content is on CDNs and follow the Best Practices for Web Performance Optimization
  2. Make sure you test your application with the campaign-specific features under realistic load
  3. Analyze the impact of third-party tracking tools and other widgets you put on your page

More Stories By Andreas Grabner

Andreas Grabner has been helping companies improve their application performance for 15+ years. He is a regular contributor within Web Performance and DevOps communities and a prolific speaker at user groups and conferences around the world. Reach him at @grabnerandi

Comments (0)

Share your thoughts on this story.

Add your comment
You must be signed in to add a comment. Sign-in | Register

In accordance with our Comment Policy, we encourage comments that are on topic, relevant and to-the-point. We will remove comments that include profanity, personal attacks, racial slurs, threats of violence, or other inappropriate material that violates our Terms and Conditions, and will block users who make repeated violations. We ask all readers to expect diversity of opinion and to treat one another with dignity and respect.

@CloudExpo Stories
The Internet of Things (IoT) is growing rapidly by extending current technologies, products and networks. By 2020, Cisco estimates there will be 50 billion connected devices. Gartner has forecast revenues of over $300 billion, just to IoT suppliers. Now is the time to figure out how you’ll make money – not just create innovative products. With hundreds of new products and companies jumping into the IoT fray every month, there’s no shortage of innovation. Despite this, McKinsey/VisionMobile data...
With major technology companies and startups seriously embracing IoT strategies, now is the perfect time to attend @ThingsExpo 2016 in New York and Silicon Valley. Learn what is going on, contribute to the discussions, and ensure that your enterprise is as "IoT-Ready" as it can be! Internet of @ThingsExpo, taking place Nov 3-5, 2015, at the Santa Clara Convention Center in Santa Clara, CA, is co-located with 17th Cloud Expo and will feature technical sessions from a rock star conference faculty ...
In his General Session at DevOps Summit, Asaf Yigal, Co-Founder & VP of Product at, explored the value of Kibana 4 for log analysis and provided a hands-on tutorial on how to set up Kibana 4 and get the most out of Apache log files. He examined three use cases: IT operations, business intelligence, and security and compliance. Asaf Yigal is co-founder and VP of Product at log analytics software company In the past, he was co-founder of social-trading platform Currensee, which...
Just over a week ago I received a long and loud sustained applause for a presentation I delivered at this year’s Cloud Expo in Santa Clara. I was extremely pleased with the turnout and had some very good conversations with many of the attendees. Over the next few days I had many more meaningful conversations and was not only happy with the results but also learned a few new things. Here is everything I learned in those three days distilled into three short points.
DevOps is about increasing efficiency, but nothing is more inefficient than building the same application twice. However, this is a routine occurrence with enterprise applications that need both a rich desktop web interface and strong mobile support. With recent technological advances from Isomorphic Software and others, rich desktop and tuned mobile experiences can now be created with a single codebase – without compromising functionality, performance or usability. In his session at DevOps Su...
As organizations realize the scope of the Internet of Things, gaining key insights from Big Data, through the use of advanced analytics, becomes crucial. However, IoT also creates the need for petabyte scale storage of data from millions of devices. A new type of Storage is required which seamlessly integrates robust data analytics with massive scale. These storage systems will act as “smart systems” provide in-place analytics that speed discovery and enable businesses to quickly derive meaningf...
In his keynote at @ThingsExpo, Chris Matthieu, Director of IoT Engineering at Citrix and co-founder and CTO of Octoblu, focused on building an IoT platform and company. He provided a behind-the-scenes look at Octoblu’s platform, business, and pivots along the way (including the Citrix acquisition of Octoblu).
In his General Session at 17th Cloud Expo, Bruce Swann, Senior Product Marketing Manager for Adobe Campaign, explored the key ingredients of cross-channel marketing in a digital world. Learn how the Adobe Marketing Cloud can help marketers embrace opportunities for personalized, relevant and real-time customer engagement across offline (direct mail, point of sale, call center) and digital (email, website, SMS, mobile apps, social networks, connected objects).
The buzz continues for cloud, data analytics and the Internet of Things (IoT) and their collective impact across all industries. But a new conversation is emerging - how do companies use industry disruption and technology enablers to lead in markets undergoing change, uncertainty and ambiguity? Organizations of all sizes need to evolve and transform, often under massive pressure, as industry lines blur and merge and traditional business models are assaulted and turned upside down. In this new da...
We all know that data growth is exploding and storage budgets are shrinking. Instead of showing you charts on about how much data there is, in his General Session at 17th Cloud Expo, Scott Cleland, Senior Director of Product Marketing at HGST, showed how to capture all of your data in one place. After you have your data under control, you can then analyze it in one place, saving time and resources.
Culture is the most important ingredient of DevOps. The challenge for most organizations is defining and communicating a vision of beneficial DevOps culture for their organizations, and then facilitating the changes needed to achieve that. Often this comes down to an ability to provide true leadership. As a CIO, are your direct reports IT managers or are they IT leaders? The hard truth is that many IT managers have risen through the ranks based on their technical skills, not their leadership ab...
In recent years, at least 40% of companies using cloud applications have experienced data loss. One of the best prevention against cloud data loss is backing up your cloud data. In his General Session at 17th Cloud Expo, Sam McIntyre, Partner Enablement Specialist at eFolder, presented how organizations can use eFolder Cloudfinder to automate backups of cloud application data. He also demonstrated how easy it is to search and restore cloud application data using Cloudfinder.
The Internet of Everything is re-shaping technology trends–moving away from “request/response” architecture to an “always-on” Streaming Web where data is in constant motion and secure, reliable communication is an absolute necessity. As more and more THINGS go online, the challenges that developers will need to address will only increase exponentially. In his session at @ThingsExpo, Todd Greene, Founder & CEO of PubNub, exploreed the current state of IoT connectivity and review key trends and t...
As organizations shift towards IT-as-a-service models, the need for managing & protecting data residing across physical, virtual, and now cloud environments grows with it. CommVault can ensure protection & E-Discovery of your data - whether in a private cloud, a Service Provider delivered public cloud, or a hybrid cloud environment – across the heterogeneous enterprise.
With all the incredible momentum behind the Internet of Things (IoT) industry, it is easy to forget that not a single CEO wakes up and wonders if “my IoT is broken.” What they wonder is if they are making the right decisions to do all they can to increase revenue, decrease costs, and improve customer experience – effectively the same challenges they have always had in growing their business. The exciting thing about the IoT industry is now these decisions can be better, faster, and smarter. Now ...
Too often with compelling new technologies market participants become overly enamored with that attractiveness of the technology and neglect underlying business drivers. This tendency, what some call the “newest shiny object syndrome” is understandable given that virtually all of us are heavily engaged in technology. But it is also mistaken. Without concrete business cases driving its deployment, IoT, like many other technologies before it, will fade into obscurity.
Discussions of cloud computing have evolved in recent years from a focus on specific types of cloud, to a world of hybrid cloud, and to a world dominated by the APIs that make today's multi-cloud environments and hybrid clouds possible. In this Power Panel at 17th Cloud Expo, moderated by Conference Chair Roger Strukhoff, panelists addressed the importance of customers being able to use the specific technologies they need, through environments and ecosystems that expose their APIs to make true ...
The Internet of Things is clearly many things: data collection and analytics, wearables, Smart Grids and Smart Cities, the Industrial Internet, and more. Cool platforms like Arduino, Raspberry Pi, Intel's Galileo and Edison, and a diverse world of sensors are making the IoT a great toy box for developers in all these areas. In this Power Panel at @ThingsExpo, moderated by Conference Chair Roger Strukhoff, panelists discussed what things are the most important, which will have the most profound...
Microservices are a very exciting architectural approach that many organizations are looking to as a way to accelerate innovation. Microservices promise to allow teams to move away from monolithic "ball of mud" systems, but the reality is that, in the vast majority of organizations, different projects and technologies will continue to be developed at different speeds. How to handle the dependencies between these disparate systems with different iteration cycles? Consider the "canoncial problem"...
Growth hacking is common for startups to make unheard-of progress in building their business. Career Hacks can help Geek Girls and those who support them (yes, that's you too, Dad!) to excel in this typically male-dominated world. Get ready to learn the facts: Is there a bias against women in the tech / developer communities? Why are women 50% of the workforce, but hold only 24% of the STEM or IT positions? Some beginnings of what to do about it! In her Day 2 Keynote at 17th Cloud Expo, San...