Welcome!

Microservices Expo Authors: Yeshim Deniz, Elizabeth White, Cloud Best Practices Network, Pat Romanski, Liz McMillan

Related Topics: Microservices Expo, Java IoT, IoT User Interface, Agile Computing, @CloudExpo

Microservices Expo: Article

Fact Finders: Sorting Out the Truth in Real User Monitoring

Go Real with the right expectations

On my recent visits to Velocity, WebPerfDay and Apps World in London, Real User Monitoring (RUM) was the hot topic. That triggered my thinking about the differences between vendors. They all promise the same for a varying range of prices - from free to a couple thousand US dollars. What I found out is that there IS a big difference and - depending on what you want to do with RUM - you want to make sure you understand the capabilities and limitations of the available solutions.

The false claim of 100% Coverage
What all vendors claim to do is capture data from 100% of your users. When looking closer you see that many of these solutions - especially the "Freemiums" - rely on theW3C Navigation Timings. So my question is: How can I cover ALL Users with W3C timings when these timings are NOT AVAILABLE on all browsers?

W3C timings are only available on new browsers. So - what about the IE6, IE7, IE8, the whole Safari Browser family, older Firefox and Chrome instances? Looking at current statistics they sum up to 35% of the overall market share (http://www.w3counter.com/globalstats.php). The statements of vendors that rely on these timings to capture all users experience are simply not accurate.

The performance impact of monitoring
After finding that out I just asked myself: "Are there anymore deficiencies that can be found?"

I first thought about the collection mechanism which reminded me of the challenges all the Web Analytics tools have. Data collection relies on the browsers onUnload event. The RUM tools have to collect the data till the last second of the lifecycle of the page and then send it off. Most SaaS solution vendors are using an image GET request to send the data to the collection instances. Modern browsers are optimizing this event because "Why should a Browser download an image if the page is about to die?"Modern browsers like Chrome optimized this use case and simply do not execute the request at all or do not wait for response if the data got sent. So again- I am losing data from my real end users. The work around some of the vendors put in place is putting a timeout in the onUnLoad-event. I've seen timeouts with up to 500ms which impact the next page that gets loaded. We want to improve the user experience/performance but these tools are forcing the user to wait longer to move to the next page.

So we are losing all the old browsers and additionally the modern ones that do not execute the data collection requests. We are now far away from 100% coverage.

Do the math
Another argument you always hear is that the RUM solution allows you to find out more about the end user environment's impact on page performance. The geographical region of the end user, the browsers, the OS or device can result in slow page performance. But does this really work?

Let's do some simple math and figure out what this means to a page with 1 000 000 visits a day:

  • 1 000 000 over all visits/day
  • 1 000 000 - 35% visits with no W3C timing support in the browser
  • 650 000- 20% not sending the data correct at all or incomplete
  • 520 000 captured visits per day

Figure 1: Only 52% of visitors are captured by most RUM vendors due to limitations of browsers

So we have reduced or base from 1 000 000 to 520 000. Let's start with the break down into the different goupings:

  • 520000 broken down by 100 countries
  • 520000/100 = 5200 visits/country/day
  • 5200 visits per country broken down by 20 Browser Versions
  • 5200/20 = 260 visits/country/browser version/day

Let's break the 260 visits further down by  10 operating system:

  • 260/10 = 26 visits/country/browser version/operating system/day

We want to have date on an hourly basis:

  • 26/24 ~ 1 visits/country/browser version/operating system/hour

**1 000 000 visits per day =~ 1 visits/country/browser version/operating system/hour! We have done no sampling, we have only country level data, we are looking at visits and not page views!**

To clarify: In this calculation I assume that the visits are evenly distributed over all countries but do not take into account that most solutions do sampling at a rate of 1-20% and look at visits with multiple page views instead of unique URIs - this seems to me as a best case scenario. In reality it can be even worse.

So then, why is Real User Monitoring so popular?...
...because it helps you to improve your Users experience! How can that work after knowing that we might not capture data from all our end users? You only have to change your expectations of what you want to achieve with Real User Monitoring.

What you should expect from your RUM solution is:

  • Support for all browsers - not only the new browsers
  • A reliable data sending mechanism
  • W3C timings support
  • Functional Health information like errors from JavaScript and HTTP - not only timings
  • AJAX/XHR-requests timing - not only timings for page loads
  • The click path of a whole visit - not only separate page views
  • Support for desktop browsers, mobile browsers and mobile native applications in combined view
  • Landing and Exit page analysis

If your selected solution provides all these features to you can go an additional step further and not only monitor your users, you can do real User Experience Management (UEM). I just want to point out what that allows you to do in some short examples.

Example 1: JavaScript Errors - Which one to fix first?
If your RUM- UEM solution provides you with JavaScript errors you can start fixing problems right away. It should be able to show you which messages appear how often in which browser, shown in Figure 2.

Figure 2: Detailed JavaScript error messages are captured for every visit and easy accessible grouped by browser, OS or geo-location

Example 2: Why are my customers leaving my web site?
With the UEM you are now able to not only see that your customers are leaving your web site. You can also figure out if they had technical issues (see Figure 3).

Figure 3: Looking at Exit Pages and correlating it with Failure Rate, Performance and User Experience allows us to quickly identify why visitors leave the website on these pages

Example 3: What did my customer do on the application before he called our support center?
Having every visit and all actions available makes it easy for the support center employees to look up the visit information as part of the triage process (see Figure 4).

Figure 4: Seeing all actions the visitor really executed on the website helps speed up the complaint process as all facts are available

Example 4: Correlating Performance to Business
Analyzing the performance of every single visit and all actions not only allows us to pinpoint problems on individual pages, certain browsers or geographical regions. It also allows us to correlate problems in the application to business. Knowing how much revenue is lost due to declined performance gives application owners better arguments when discussing investments in the infrastructure or additional R&D resources. The dashboard shown in Figure 5correlates Response Time with the number of Visitors by Continent and the generated Orders. Problems in the infrastructure that lead to performance problems of the application can then easily be correlated to lost revenue:

Figure 5: Correlating Business Values such as number of Orders with Page Performance and Infrastructure Health opens a new of communication between Business and Application Owners

Conclusion
W3C timings give us great insight but it is only available in new browsers. Be aware of what your RUM solution vendor promises to you and do not forget about the simple math. Set your expectations right and look for solutions that support visits and health indicators like HTTP errors and JavaScript errors. Go Real with the right expectations.

More Stories By Klaus Enzenhofer

Klaus Enzenhofer has several years of experience and expertise in the field of Web Performance Optimization and User Experience Management. He works as Technical Strategist in the Center of Excellence Team at dynaTrace Software. In this role he influences the development of the dynaTrace Application Performance Management Solution and the Web Performance Optimization Tool dynaTrace AJAX Edition. He mainly gathered his experience in web and performance by developing and running large-scale web portals at Tiscover GmbH.

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.


@MicroservicesExpo Stories
SYS-CON Events announced today that BMC Software has been named "Siver Sponsor" of SYS-CON's 18th Cloud Expo, which will take place on June 7-9, 2015 at the Javits Center in New York, New York. BMC is a global leader in innovative software solutions that help businesses transform into digital enterprises for the ultimate competitive advantage. BMC Digital Enterprise Management is a set of innovative IT solutions designed to make digital business fast, seamless, and optimized from mainframe to mo...
As AT&Ts VP of Domain 2.0 architecture writes one aspect of their Domain 2.0 strategy is a goal to embrace a Microservices Application Architecture. One page 9 they describe how these envisage them fitting into the ECOMP architecture: "The initial steps of the recipes include a homing and placement task using constraints specified in the requests. ‘Homing and Placement' are micro-services involving orchestration, inventory, and controllers responsible for infrastructure, network, and applicati...
SYS-CON Events announced today that EastBanc Technologies will exhibit at SYS-CON's 18th International Cloud Expo®, which will take place on June 7-9, 2016, at the Javits Center in New York City, NY. EastBanc Technologies has been working at the frontier of technology since 1999. Today, the firm provides full-lifecycle software development delivering flexible technology solutions that seamlessly integrate with existing systems – whether on premise or cloud. EastBanc Technologies partners with p...
A strange thing is happening along the way to the Internet of Things, namely far too many devices to work with and manage. It has become clear that we'll need much higher efficiency user experiences that can allow us to more easily and scalably work with the thousands of devices that will soon be in each of our lives. Enter the conversational interface revolution, combining bots we can literally talk with, gesture to, and even direct with our thoughts, with embedded artificial intelligence, wh...
SYS-CON Events announced today that Isomorphic Software will exhibit at SYS-CON's [email protected] at Cloud Expo New York, which will take place on June 7-9, 2016, at the Javits Center in New York City, NY. Isomorphic Software provides the SmartClient HTML5/AJAX platform, the most advanced technology for building rich, high-productivity enterprise web applications for any device. SmartClient couples the industry’s broadest, deepest UI component set with a java server framework to deliver an end-...
SYS-CON Events announced today that Alert Logic, Inc., the leading provider of Security-as-a-Service solutions for the cloud, will exhibit at SYS-CON's 18th International Cloud Expo®, which will take place on June 7-9, 2016, at the Javits Center in New York City, NY. Alert Logic, Inc., provides Security-as-a-Service for on-premises, cloud, and hybrid infrastructures, delivering deep security insight and continuous protection for customers at a lower cost than traditional security solutions. Ful...
SYS-CON Events announced today that Commvault, a global leader in enterprise data protection and information management, has been named “Bronze Sponsor” of SYS-CON's 18th International Cloud Expo, which will take place on June 7–9, 2016, at the Javits Center in New York City, NY, and the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. Commvault is a leading provider of data protection and information management...
Many banks and financial institutions are experimenting with containers in development environments, but when will they move into production? Containers are seen as the key to achieving the ultimate in information technology flexibility and agility. Containers work on both public and private clouds, and make it easy to build and deploy applications. The challenge for regulated industries is the cost and complexity of container security compliance. VM security compliance is already challenging, ...
SYS-CON Events announced today that Tintri Inc., a leading producer of VM-aware storage (VAS) for virtualization and cloud environments, will exhibit at the 18th International CloudExpo®, which will take place on June 7-9, 2016, at the Javits Center in New York City, New York, and the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA.
SYS-CON Events announced today that AppNeta, the leader in performance insight for business-critical web applications, will exhibit and present at SYS-CON's @DevOpsSummit at Cloud Expo New York, which will take place on June 7-9, 2016, at the Javits Center in New York City, NY. AppNeta is the only application performance monitoring (APM) company to provide solutions for all applications – applications you develop internally, business-critical SaaS applications you use and the networks that deli...
18th Cloud Expo, taking place June 7-9, 2016, at the Javits Center in New York City, NY, will feature technical sessions from a rock star conference faculty and the leading industry players in the world. Cloud computing is now being embraced by a majority of enterprises of all sizes. Yesterday's debate about public vs. private has transformed into the reality of hybrid cloud: a recent survey shows that 74% of enterprises have a hybrid cloud strategy. Meanwhile, 94% of enterprises are using some...
SoftLayer operates a global cloud infrastructure platform built for Internet scale. With a global footprint of data centers and network points of presence, SoftLayer provides infrastructure as a service to leading-edge customers ranging from Web startups to global enterprises. SoftLayer's modular architecture, full-featured API, and sophisticated automation provide unparalleled performance and control. Its flexible unified platform seamlessly spans physical and virtual devices linked via a world...
While there has been much ado about interoperability, there are still no real solutions, same as last year and the year before that. The large EHR vendors who continue to dominate the market still maintain that interoperability is all but solved, still can't connect EHRs across the continuum causing frustration by providers and a disservice to patients. The ONC pays lip service to the problem, but that is about it. It is time for the healthcare industry to consider alternatives like middleware w...
Join us at Cloud Expo | @ThingsExpo 2016 – June 7-9 at the Javits Center in New York City and November 1-3 at the Santa Clara Convention Center in Santa Clara, CA – and deliver your unique message in a way that is striking and unforgettable by taking advantage of SYS-CON's unmatched high-impact, result-driven event / media packages.
In the rush to compete in the digital age, a successful digital transformation is essential, but many organizations are setting themselves up for failure. There’s a common misconception that the process is just about technology, but it’s not. It’s about your business. It shouldn’t be treated as an isolated IT project; it should be driven by business needs with the committed involvement of a range of stakeholders.
The 19th International Cloud Expo has announced that its Call for Papers is open. Cloud Expo, to be held November 1-3, 2016, at the Santa Clara Convention Center in Santa Clara, CA, brings together Cloud Computing, Big Data, Internet of Things, DevOps, Containers, Microservices and WebRTC to one location. With cloud computing driving a higher percentage of enterprise IT budgets every year, it becomes increasingly important to plant your flag in this fast-expanding business opportunity. Submit y...
Internet of @ThingsExpo, taking place November 1-3, 2016, at the Santa Clara Convention Center in Santa Clara, CA, is co-located with the 19th International Cloud Expo and will feature technical sessions from a rock star conference faculty and the leading industry players in the world and ThingsExpo New York Call for Papers is now open.
IoT generates lots of temporal data. But how do you unlock its value? How do you coordinate the diverse moving parts that must come together when developing your IoT product? What are the key challenges addressed by Data as a Service? How does cloud computing underlie and connect the notions of Digital and DevOps What is the impact of the API economy? What is the business imperative for Cognitive Computing? Get all these questions and hundreds more like them answered at the 18th Cloud Expo...
SYS-CON Events announced today the How to Create Angular 2 Clients for the Cloud Workshop, being held June 7, 2016, in conjunction with 18th Cloud Expo | @ThingsExpo, at the Javits Center in New York, NY. Angular 2 is a complete re-write of the popular framework AngularJS. Programming in Angular 2 is greatly simplified. Now it’s a component-based well-performing framework. The immersive one-day workshop led by Yakov Fain, a Java Champion and a co-founder of the IT consultancy Farata Systems and...
SYS-CON Events announced today the Docker Meets Kubernetes – Intro into the Kubernetes World, being held June 9, 2016, in conjunction with 18th Cloud Expo | @ThingsExpo, at the Javits Center in New York, NY. Register for 'Docker Meets Kubernetes Workshop' Here! This workshop led by Sebastian Scheele, co-founder of Loodse, introduces participants to Kubernetes (container orchestration). Through a combination of instructor-led presentations, demonstrations, and hands-on labs, participants learn ...