Click here to close now.




















Welcome!

IoT User Interface Authors: Pat Romanski, Dana Gardner, Elizabeth White, Mark Carrizosa, Trevor Parsons

Related Topics: Microservices Expo, Java IoT, Industrial IoT, Microsoft Cloud, IoT User Interface, Release Management

Microservices Expo: Article

GUI Versus Script: Is This Old Load Testing Debate Now Over?

New breed of hybrid load testing solutions

The first step in performance or load testing a web application is to create a realistic test script. This script, representing a specific type of end user, contains steps that are fully automated transactions flows. Often, complex behaviors need to be emulated as part of these flows. To incorporate the needed behavior or to handle complex scenarios, testers need to customize these load scripts. The question is whether you utilize a tool that takes a GUI driven approach for script customization/manipulation, or whether you choose a tool which requires the use of a programming language.

As Performance testers, we typically evaluate several load testing tools before diving into a project. Some of us prefer the GUI driven approach to creating load scripts because, being results driven, we want to get the test up and running as quickly as possible. The GUI approach saves us time and there is no programming involved thus the learning curve is also extremely fast. These GUI scripts are typically easily modified by having their parameters and values organized in a visually obvious format. And just because a tool is easy to use, doesn't mean that it's only for beginners. Remember the good old days of MS-DOS? Eeek, thank goodness for GUI driven DOS (Windows).

Some testers (mistakenly) dismiss the GUI driven approach as being too limited for complicated behaviors. Old school testers insist on only utilizing program-based scripts because past experience has led them to think that this is the most flexible or the only choice for handling complicated behaviors. All too often, the perception is that GUI driven scripts limit the level of customizations possible to emulate a real user. This opinion is likely based on experiences with rudimentary GUI tools on the market that are too basic and limited in their capabilities such as handling dynamic content and varying the transactions flows.

However, there is a new breed in load testing solutions, designed and built to handle the most complex advanced scenarios. These are true enterprise-class solutions which provide a hybrid approach by containing both GUI and programming features. The power behind this hybrid approach enables the user to emulate even the most complex behavior but it also includes time saving features which can only be offered by a GUI solution.

Let's get really technical for a minute to highlight an example: Some tools provide the common "programming" tools like loops and conditions. Recorded values of parameters are easily replaced by variables with a click of the mouse. NeoLoad, an example of a modern enterprise solution, goes further to provide even more advanced features. Some specific examples include: 1) "Wait Until" Action to the current execution thread until certain conditions have been verified 2) "Shared Queue" Action to use values from one VU's response as input in an entirely different VU execution 3) a "While" Action allows various transactions, such as web pages, to be iterated while a condition remains false 4) "Try ...Catch" Action to break out of the script based on Validation or Assertions and go to the End phase. The use of nested actions creates even more complex behaviors. All of these advanced scenarios are accomplished without programming! PUSHtechnology which is rapidly being deployed in today's RIA's adds even more complexity. With asynchronous updates pushed to/from the page independent of complete page refreshes...imagine this programming nightmare! NeoLoad has a way to solve this problem using cutting edge technology that can "listen" for PUSH behavior (all polling or streaming requests) and wrap all these asynchronous requests into a GUI fork Action, even calculating the average time interval between execution, then presents you with a newly modified script to emulate these load pattern characteristics. Again, all of these GUI centric features allow further manipulation without the need for programming.

Admittedly, there are rare occasions which call for programming and the new breed solution has a Javascript Action with a complete API to give it a "hybrid" of GUI and coding capability. Again, simply drag the Javascript action into the place where you want it executed and add the java or javascript required. Accomplish things like computation of variables, logging values to files, manipulating cookies, etc.. Incorporating the javascript feature allows for unlimited flexibility in scripting.
As the script becomes more complicated, it's nice to have this hierarchical GUI-type view.

New breed solutions not only allow for complex behaviors...the GUI approach has other time saving embedded assets. To handle dynamic parameters, NeoLoad is delivered with an ever evolving list of known architectural framework dynamic parameters which are automatically detected and handled by a wizard. The search and replace feature finds strings embedded in any request (body, header, URL's, XML tree, partial matches, etc.) and replaces or concatenates to the string with any data or variable - choose to replace entire string or just part of the string. There's an automatic extraction feature to take data from any response and use it to populate the value of a variable. You can enable/disable specific transactions at a page level or embedded request level which a click of the mouse to isolate transactions of interest. Target an entirely different QA/Performance/Production environment - change the Servers field from host where you initially made the recording to the new server name and port. Debug scripts easily using the side-by-side comparison feature with a tab isolating only the differences of recorded vs. replayed values.

From this perspective, the great debate over choosing a GUI driven or programming approach is over...eliminate the tradeoffs and choose a hybrid which has a powerful GUI and also extends the flexibility for programming. Skip most of the manual programming and only use coding where it's required. Both experts and beginners can agree there is now a solution which meets all of the load & performance testing challenges of your own unique web application. Introducing the "GUI hybrid".

More Stories By Rebecca Clinard

Rebecca Clinard is a Senior Performance Engineer at Neotys, a provider of load testing software for Web applications. Previously, she worked as a web application performance engineer for Bowstreet, Fidelity Investments, Bottomline Technologies and Timberland companies, industries spanning retail, financial services, insurance and manufacturing. Her expertise lies in creating realistic load tests and performance tuning multi-tier deployments. She has been orchestrating and conducting performance tests since 2001. Clinard graduated from University of New Hampshire with a BS and also holds a UNIX Certificate from Worcester Polytechnic Institute.

@CloudExpo Stories
SYS-CON Events announced today that Micron Technology, Inc., a global leader in advanced semiconductor systems, will exhibit at the 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. Micron’s broad portfolio of high-performance memory technologies – including DRAM, NAND and NOR Flash – is the basis for solid state drives, modules, multichip packages and other system solutions. Backed by more than 35 years of tech...
SYS-CON Events announced today the Containers & Microservices Bootcamp, being held November 3-4, 2015, in conjunction with 17th Cloud Expo, @ThingsExpo, and @DevOpsSummit at the Santa Clara Convention Center in Santa Clara, CA. This is your chance to get started with the latest technology in the industry. Combined with real-world scenarios and use cases, the Containers and Microservices Bootcamp, led by Janakiram MSV, a Microsoft Regional Director, will include presentations as well as hands-on...
DevOps Summit, 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 and the leading industry players in the world. The widespread success of cloud computing is driving the DevOps revolution in enterprise IT. Now as never before, development teams must communicate and collaborate in a dynamic, 24/7/365 environment. There is no time to wait for long development...
Advances in technology and ubiquitous connectivity have made the utilization of a dispersed workforce more common. Whether that remote team is located across the street or country, management styles/ approaches will have to be adjusted to accommodate this new dynamic. In his session at 17th Cloud Expo, Sagi Brody, Chief Technology Officer at Webair Internet Development Inc., will focus on the challenges of managing remote teams, providing real-world examples that demonstrate what works and what...
SYS-CON Events announced today that Pythian, a global IT services company specializing in helping companies leverage disruptive technologies to optimize revenue-generating systems, has been named “Bronze Sponsor” of SYS-CON's 17th Cloud Expo, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. Founded in 1997, Pythian is a global IT services company that helps companies compete by adopting disruptive technologies such as cloud, Big Data, advance...
In his session at @ThingsExpo, Lee Williams, a producer of the first smartphones and tablets, will talk about how he is now applying his experience in mobile technology to the design and development of the next generation of Environmental and Sustainability Services at ETwater. He will explain how M2M controllers work through wirelessly connected remote controls; and specifically delve into a retrofit option that reverse-engineers control codes of existing conventional controller systems so the...
Akana has announced the availability of the new Akana Healthcare Solution. The API-driven solution helps healthcare organizations accelerate their transition to being secure, digitally interoperable businesses. It leverages the Health Level Seven International Fast Healthcare Interoperability Resources (HL7 FHIR) standard to enable broader business use of medical data. Akana developed the Healthcare Solution in response to healthcare businesses that want to increase electronic, multi-device acce...
17th Cloud Expo, taking place Nov 3-5, 2015, at the Santa Clara Convention Center in Santa Clara, CA, 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 ar...
The 3rd International WebRTC Summit, to be held Nov. 4–6, 2014, at the Santa Clara Convention Center in Santa Clara, CA, announces that its Call for Papers is now open. Topics include all aspects of improving IT delivery by eliminating waste through automated business models leveraging cloud technologies. WebRTC Summit is co-located with 15th International Cloud Expo, 6th International Big Data Expo, 3rd International DevOps Summit and 2nd Internet of @ThingsExpo. WebRTC (Web-based Real-Time Com...
The 17th International Cloud Expo has announced that its Call for Papers is open. 17th International Cloud Expo, to be held November 3-5, 2015, at the Santa Clara Convention Center in Santa Clara, CA, brings together Cloud Computing, APM, APIs, Microservices, Security, Big Data, Internet of Things, DevOps 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 bu...
Moving an existing on-premise infrastructure into the cloud can be a complex and daunting proposition. It is critical to understand the benefits as well as the challenges associated with either a full or hybrid approach. In his session at 17th Cloud Expo, Richard Weiss, Principal Consultant at Pythian, will present a roadmap that can be leveraged by any organization to plan, analyze, evaluate and execute on a cloud migration solution. He will review the five major cloud transformation phases a...
The 5th International DevOps Summit, co-located with 17th International Cloud Expo – being held November 3-5, 2015, at the Santa Clara Convention Center in Santa Clara, CA – announces that its Call for Papers is open. Born out of proven success in agile development, cloud computing, and process automation, DevOps is a macro trend you cannot afford to miss. From showcase success stories from early adopters and web-scale businesses, DevOps is expanding to organizations of all sizes, including the ...
SYS-CON Events announced today that the "Second Containers & Microservices Expo" will take place November 3-5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. Containers and microservices have become topics of intense interest throughout the cloud developer and enterprise IT communities.
IBM’s Blue Box Cloud, powered by OpenStack, is now available in any of IBM’s globally integrated cloud data centers running SoftLayer infrastructure. Less than 90 days after its acquisition of Blue Box, IBM has integrated its Blue Box Cloud Dedicated private-cloud-as-a-service into its broader portfolio of OpenStack® based solutions. The announcement, made today at the OpenStack Silicon Valley event, further highlights IBM’s continued support to deliver OpenStack solutions across all cloud depl...
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...
Mobile, social, Big Data, and cloud have fundamentally changed the way we live. “Anytime, anywhere” access to data and information is no longer a luxury; it’s a requirement, in both our personal and professional lives. For IT organizations, this means pressure has never been greater to deliver meaningful services to the business and customers.
SYS-CON Events announced today that HPM Networks will exhibit at the 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. For 20 years, HPM Networks has been integrating technology solutions that solve complex business challenges. HPM Networks has designed solutions for both SMB and enterprise customers throughout the San Francisco Bay Area.
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.
Amazon and Google have built software-defined data centers (SDDCs) that deliver massively scalable services with great efficiency. Yet, building SDDCs has proven to be a near impossibility for ‘normal’ companies without hyper-scale resources. In his session at 17th Cloud Expo, David Cauthron, founder and chief executive officer of Nimboxx, will discuss the evolution of virtualization (hardware, application, memory, storage) and how commodity / open source hyper converged infrastructure (HCI) so...
In today's digital world, change is the one constant. Disruptive innovations like cloud, mobility, social media, and the Internet of Things have reshaped the market and set new standards in customer expectations. To remain competitive, businesses must tap the potential of emerging technologies and markets through the rapid release of new products and services. However, the rigid and siloed structures of traditional IT platforms and processes are slowing them down – resulting in lengthy delivery ...