Welcome!

Machine Learning Authors: Ed Featherston, Jignesh Solanki, Destiny Bertucci, Liz McMillan, Elizabeth White

Related Topics: Machine Learning , Java IoT

Machine Learning : Article

Razor Profiler - An Automated JavaScript Profiling Tool

Razor Profiler - An Automated JavaScript Profiling Tool

Razor Profiler
(beta), an online Ajax profiling tool, is available for public review now at http://www.razorspeed.com.

What Is it?
Razor Profiler(beta) is a web-based Ajax profiling tool to help web developers understand and analyze the runtime behavior of their JavaScript code in a cross-browser environment. Razor Profiler can be access either online as a service; or be downloaded to run locally. Some Razor Profiler screen shots are shown below:

Files Tab


Files Tab
Top Call Stacks Image


Top Call Stacks
Call Stack Visualization


Call Stack Visualization

Why Razor Profiler?
The amount of JavaScript code on the client side is increasing significantly with the growing popularity of Ajax and Web 2.0.
Web developers rely on JavaScript heavily these days in order to deliver a richer user experience.
Including a either home-grown or third party JavaScript library and application specific code, today’s web applications can easily have several thousand lines of JavaScript code, or even tens of thousands of lines.

The footprint of client side JavaScript can range from tens of kilobytes to hundreds of kilobytes. This amount of JavaScript can do magic to application functionality and user experience, but they also introduce many questions.

As an application developer:

  • How do you measure the runtime behavior of your code on the vast array of client platform and browser combinations?
  • Do you know why the same code works well on one browser but performs very poorly on a different browser
  • Do you know whose code is causing problems, yours, or a third party library
  • Do you know exactly where is the performance bottleneck?

If you are a JavaScript library developer, it is even more important for you to understand the runtime behavior of your code since that it will be used by other developers in many different ways.

However, there is no easy way to obtain the answers to the above questions. It is difficult to study the runtime behavior of Javascript applications in a cross-browser environment:

  • Different browsers (Internet Explorer, FireFox, Safari, etc) have different runtime behaviors. The same code can behave very differently on different browsers;
  • Lack of tooling that supports JavaScript debugging and profiling. JavaScript has evolved from being perceived as a “toy language” to be a heavily used mainstream programming language for writing web applications, but JavaScript tooling has not caught up yet;

Razor Profiler aims to help solve this problem. Razor Profiler is JavaScript profiling tool hat aims to make it really easy for web developers to profile their Ajax code in a cross browser
environment.

Razor Profiler Features
Razor Profiler automates JavaScript profiling:

  • Automation: no application code change required. Razor Profiler automatically collects all the necessary data and presents them to web developers for analysis.
  • Runs on any browser: web developers can profile any JavaScript application on any browser. There is nothing to install on the client side.
  • Rich lexical analysis: Razor Profiler presents rich lexcial information about the application, such as file information (number, response status, size, mimetype, percentage, etc),
    tokens (size, file, percent, count), and functions (size, file, name…), etc;
  • Profile scenario recording: Razor Profile enables web developers to selectively record the scenarios that they are interested in. Only recorded scenarios will be used in analysis.
  • Call stack analysis: for each recorded scenario, Razor Profiler presents all the call stacks in the order of their occurence. For each call stacks, web developers can drill into it to find out
    the duration of the stack, all the function calls of this stack and the duration of each call.
  • Function analysis: For each JavaScript function in the application, Razor Profile presents the number of times it has been invoked, the duration of each invocation, and the call stacks that invoked this function.
  • Data visualization with graphing and charting: Razor Profiler presents top call stacks, top function calls of each stack, top recorded scenarios, etc. using visual charts and graphs to help web developers
    better understand the runtime behavior of their application. For example, each call stack is visualized as an intuitive Gantt chart.

some Razor Profiler screen shots are available here.

How Does Razor Profiler Work?
Razor Profiler composes of a server component that runs inside a standard Java EE Servlet engine, and a JavaScript-based client component that runs inside any browser. Once you have Razor server started, you can profile your JavaScript application by entering the start URL of your application into Razor Profiler and run through your test scenarios.
Razor Profiler will automatically record data and visualize them for your analysis. There is no client side installation, browser configuration change or application code change required.
In order to achieve this, Razor Profiler goes through five different phases:

  • Application retrieval: Once a web developer enters the application start URL into Razor Profiler, Razor Profiler client component (”the client”) will send this URL to Razor Profiler server component (”the server”).
    The server performs the actually retrieval of this URL. After additional server processing (such as lexical analysis and code injection, see below), the retrieved content is sent to the client side to be displayed in a new browser window. For the developer point of view, the application is launched and running in this new browser window.

    In this process, Razor Profiler Server is acting like a “proxy server”. But it is not really a “proxy server” and there is no need for developers to re-configure their browser proxy settings.
  • Lexical analysis:
    Once the server retrieves the application URL, it performs lexical analysis of the returned content by identifying and analyzing JavaScript files, functions, and tokens,etc. The result is sent to the client for display.
  • Code injection: Upon lexical analysis of JavaScript code, the server injects “probe” code into the application’s JavaScript sources before returning them to the client. These injected “probes” enable automatic collection of application runtime data, and saves developers from doing so manually.
  • Runtime data capture: Once the application’s JavaScript code is running on the client side and as developers run throug desired profile scenarios, the injected “probes” automcally collect all the necessary data to Razor Profiler Client.
  • Data analysis: When the developer finishes recording scenarios and starts data analysis, Razor Profiler client performs analysis of all the collected data and presents the results.

How To Get Razor Profiler?
Just go to  andhttp://www.razorspeed.com download it. Follow the installation instructions to install Razor Profiler server. Or, you can try it online as an online service.
Feel free to post comments at Razor Profiler online forum

More Stories By Coach Wei

Coach Wei is founder and CEO of Yottaa, a web performance optimization company. He is also founder and Chairman of Nexaweb, an enterprise application modernization software company. Coding, running, magic, robot, big data, speed...are among his favorite list of things (not necessarily in that order. His coding capability is really at PowerPoint level right now). Caffeine, doing something entrepreneurial and getting out of sleeping are three reasons that he gets up in the morning and gets really excited.

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
You know you need the cloud, but you’re hesitant to simply dump everything at Amazon since you know that not all workloads are suitable for cloud. You know that you want the kind of ease of use and scalability that you get with public cloud, but your applications are architected in a way that makes the public cloud a non-starter. You’re looking at private cloud solutions based on hyperconverged infrastructure, but you’re concerned with the limits inherent in those technologies.
As Marc Andreessen says software is eating the world. Everything is rapidly moving toward being software-defined – from our phones and cars through our washing machines to the datacenter. However, there are larger challenges when implementing software defined on a larger scale - when building software defined infrastructure. In his session at 16th Cloud Expo, Boyan Ivanov, CEO of StorPool, provided some practical insights on what, how and why when implementing "software-defined" in the datacent...
Blockchain. A day doesn’t seem to go by without seeing articles and discussions about the technology. According to PwC executive Seamus Cushley, approximately $1.4B has been invested in blockchain just last year. In Gartner’s recent hype cycle for emerging technologies, blockchain is approaching the peak. It is considered by Gartner as one of the ‘Key platform-enabling technologies to track.’ While there is a lot of ‘hype vs reality’ discussions going on, there is no arguing that blockchain is b...
Leading companies, from the Global Fortune 500 to the smallest companies, are adopting hybrid cloud as the path to business advantage. Hybrid cloud depends on cloud services and on-premises infrastructure working in unison. Successful implementations require new levels of data mobility, enabled by an automated and seamless flow across on-premises and cloud resources. In his general session at 21st Cloud Expo, Greg Tevis, an IBM Storage Software Technical Strategist and Customer Solution Architec...
Nordstrom is transforming the way that they do business and the cloud is the key to enabling speed and hyper personalized customer experiences. In his session at 21st Cloud Expo, Ken Schow, VP of Engineering at Nordstrom, discussed some of the key learnings and common pitfalls of large enterprises moving to the cloud. This includes strategies around choosing a cloud provider(s), architecture, and lessons learned. In addition, he covered some of the best practices for structured team migration an...
The need for greater agility and scalability necessitated the digital transformation in the form of following equation: monolithic to microservices to serverless architecture (FaaS). To keep up with the cut-throat competition, the organisations need to update their technology stack to make software development their differentiating factor. Thus microservices architecture emerged as a potential method to provide development teams with greater flexibility and other advantages, such as the abili...
Product connectivity goes hand and hand these days with increased use of personal data. New IoT devices are becoming more personalized than ever before. In his session at 22nd Cloud Expo | DXWorld Expo, Nicolas Fierro, CEO of MIMIR Blockchain Solutions, will discuss how in order to protect your data and privacy, IoT applications need to embrace Blockchain technology for a new level of product security never before seen - or needed.
The use of containers by developers -- and now increasingly IT operators -- has grown from infatuation to deep and abiding love. But as with any long-term affair, the honeymoon soon leads to needing to live well together ... and maybe even getting some relationship help along the way. And so it goes with container orchestration and automation solutions, which are rapidly emerging as the means to maintain the bliss between rapid container adoption and broad container use among multiple cloud host...
Blockchain is a shared, secure record of exchange that establishes trust, accountability and transparency across business networks. Supported by the Linux Foundation's open source, open-standards based Hyperledger Project, Blockchain has the potential to improve regulatory compliance, reduce cost as well as advance trade. Are you curious about how Blockchain is built for business? In her session at 21st Cloud Expo, René Bostic, Technical VP of the IBM Cloud Unit in North America, discussed the b...
In his general session at 21st Cloud Expo, Greg Dumas, Calligo’s Vice President and G.M. of US operations, discussed the new Global Data Protection Regulation and how Calligo can help business stay compliant in digitally globalized world. Greg Dumas is Calligo's Vice President and G.M. of US operations. Calligo is an established service provider that provides an innovative platform for trusted cloud solutions. Calligo’s customers are typically most concerned about GDPR compliance, application p...
Imagine if you will, a retail floor so densely packed with sensors that they can pick up the movements of insects scurrying across a store aisle. Or a component of a piece of factory equipment so well-instrumented that its digital twin provides resolution down to the micrometer.
In his keynote at 18th Cloud Expo, Andrew Keys, Co-Founder of ConsenSys Enterprise, provided an overview of the evolution of the Internet and the Database and the future of their combination – the Blockchain. Andrew Keys is Co-Founder of ConsenSys Enterprise. He comes to ConsenSys Enterprise with capital markets, technology and entrepreneurial experience. Previously, he worked for UBS investment bank in equities analysis. Later, he was responsible for the creation and distribution of life settle...
The cloud era has reached the stage where it is no longer a question of whether a company should migrate, but when. Enterprises have embraced the outsourcing of where their various applications are stored and who manages them, saving significant investment along the way. Plus, the cloud has become a defining competitive edge. Companies that fail to successfully adapt risk failure. The media, of course, continues to extol the virtues of the cloud, including how easy it is to get there. Migrating...
Coca-Cola’s Google powered digital signage system lays the groundwork for a more valuable connection between Coke and its customers. Digital signs pair software with high-resolution displays so that a message can be changed instantly based on what the operator wants to communicate or sell. In their Day 3 Keynote at 21st Cloud Expo, Greg Chambers, Global Group Director, Digital Innovation, Coca-Cola, and Vidya Nagarajan, a Senior Product Manager at Google, discussed how from store operations and ...
In his session at 21st Cloud Expo, Raju Shreewastava, founder of Big Data Trunk, provided a fun and simple way to introduce Machine Leaning to anyone and everyone. He solved a machine learning problem and demonstrated an easy way to be able to do machine learning without even coding. Raju Shreewastava is the founder of Big Data Trunk (www.BigDataTrunk.com), a Big Data Training and consulting firm with offices in the United States. He previously led the data warehouse/business intelligence and B...
"IBM is really all in on blockchain. We take a look at sort of the history of blockchain ledger technologies. It started out with bitcoin, Ethereum, and IBM evaluated these particular blockchain technologies and found they were anonymous and permissionless and that many companies were looking for permissioned blockchain," stated René Bostic, Technical VP of the IBM Cloud Unit in North America, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Conventi...
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, whic...
As DevOps methodologies expand their reach across the enterprise, organizations face the daunting challenge of adapting related cloud strategies to ensure optimal alignment, from managing complexity to ensuring proper governance. How can culture, automation, legacy apps and even budget be reexamined to enable this ongoing shift within the modern software factory? In her Day 2 Keynote at @DevOpsSummit at 21st Cloud Expo, Aruna Ravichandran, VP, DevOps Solutions Marketing, CA Technologies, was jo...
While some developers care passionately about how data centers and clouds are architected, for most, it is only the end result that matters. To the majority of companies, technology exists to solve a business problem, and only delivers value when it is solving that problem. 2017 brings the mainstream adoption of containers for production workloads. In his session at 21st Cloud Expo, Ben McCormack, VP of Operations at Evernote, discussed how data centers of the future will be managed, how the p...
"Since we launched LinuxONE we learned a lot from our customers. More than anything what they responded to were some very unique security capabilities that we have," explained Mark Figley, Director of LinuxONE Offerings at IBM, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA.