Welcome!

Linux Containers Authors: Jason Bloomberg, Zakia Bouachraoui, Yeshim Deniz, Elizabeth White, Liz McMillan

Related Topics: @DevOpsSummit, Linux Containers, Containers Expo Blog

@DevOpsSummit: Blog Feed Post

Performance Testing for Modern Apps By @AppDynamics | @DevOpsSummit #DevOps

The performance of your application affects your business more than you might think

Performance Testing for Modern Apps
By Dustin Whittle

The performance of your application affects your business more than you might think. Top engineering organizations think of performance not as a nice-to-have, but as a crucial feature of their product. Unfortunately, most engineering teams do not regularly test the performance and scalability of their infrastructure. To understand how to test performance in modern applications, you must start by understanding performance is key to a great user experience.  The reality is the only performance metric that matters is the user’s perceived load time.

The value of performance
A common question is how fast is fast enough for a web application? A quick overview of
key performance metrics.

Most engineering teams under you need to treat performance as a feature. When it comes to performance testing you should understand the baseline performance of your application. The performance of each transaction is unique. For example, in an e-commerce application, a homepage transaction is likely highly cached and very fast whereas a checkout transaction is more complicated and has to talk to a payment service, shipping service, etc. To ensure users have a great experience you need to test the most common flows of your users and understand performance in the browser and on the server.

Understanding server-side performance
Apache Bench
and Siege are great for quick load tests of a single end point. If you just need to get a sense of the requests per second for an endpoint, these are a great solution. A more advanced approach and my personal preference is locust.io which is a load testing framework that enables complex transactions and can generate high levels of concurrency with ease.

  • Locust.io is a great tool for understanding the performance of the server side.

  • Bees with Machine Guns – A utility for arming (creating) many bees (micro EC2 instances) to attack (load test) targets (web applications).

  • MultiMechanize – Multi-Mechanize is an open source framework for performance and load testing. It runs concurrent Python scripts to generate load (synthetic transactions) against a remote site or service. Multi-Mechanize is most commonly used for web performance and scalability testing, but can be used to generate workload against any remote API accessible from Python.

  • Siege – Siege is an http load testing and benchmarking utility. It was designed to let web developers measure their code under duress, to see how it will stand up to load on the internet. Siege supports basic authentication, cookies, HTTP and HTTPS protocols. It lets its user hit a web server with a configurable number of simulated web browsers. Those browsers place the server “under siege.”

  • Apache Bench – AB is a tool for benchmarking your Apache HTTP server. It is designed to give you an impression of how Apache performs.

  • HttpPerf – Httperf is a tool for measuring web server performance. It provides a flexible facility for generating various HTTP workloads and for measuring server performance. The focus of httperf is not on implementing one particular benchmark but on providing a robust, high-performance tool that facilitates the construction of both micro- and macro-level benchmarks. The three distinguishing characteristics of httpperf are its robustness, which includes the ability to generate and sustain server overload, support for the HTTP/1.1 and SSL protocols, and its extensibility to new workload generators and performance measurements.

  • JMeter – Apache JMeter may be used to test performance both on static and dynamic resources (files, Servlets, Perl scripts, Java Objects, databases and queries, FTP servers and more). It can be used to simulate a heavy load on a server, network or object to test its strength or to analyze overall performance under different load types. You can use it to make a graphical analysis of performance or to test your server/script/object behavior under heavy concurrent load.

Understanding client-side performance
Modern applications spend more time in the browser than on the server-side. The best tool to get started understanding client-side performance is Google PageSpeed Insights. Google PageSpeed Insights is a service to analyzes the content of a web page, and then generates suggestions to make that page faster.

  • Google PageSpeed Insights – PageSpeed Insights analyzes the content of a web page, then generates suggestions to make that page faster. Reducing page load times can reduce bounce rates and increase conversion rates.

Understanding real-world performance
SiteSpeed.io
is my favorite tool for evaluating the client-side performance from real browsers. Sitespeed.io is an open source tool that helps you analyze your website speed and performance based on performance best practices and timing metrics. You can analyze one site, analyze and compare multiple sites or let your continuous integration server break your build when your performance budget is exceeded.

It is not always possible for teams to modify the applications to optimize client-side performance. Google has invested in making ngx_pagespeed + mod_pagespeed as web server extensions to automate performance improvements without code changes.

  • Google ngx_pagespeed – ngx_pagespeed speeds up your site and reduces page load time. This open-source nginx server module automatically applies web performance best practices to pages, and associated assets (CSS, JavaScript, images) without requiring that you modify your existing content or workflow.

  • Google mod_pagespeed – mod_pagespeed speeds up your site and reduces page load time. This open-source Apache HTTP server module automatically applies web performance best practices to pages, and associated assets (CSS, JavaScript, images) without requiring that you modify your existing content or workflow.

  • Cloudflare, Incapsula, Torbit, Visual Website Optimizer are all commercial services that will proxy your website and automatically improve performance without code or infrastructure changes.

WebPageTest.org is an excellent utility for testing a web page in any browser, from any location, over any network condition for free. WebPageTest gives deep insight into the performance of the client-side in a variety of real browsers.

It is not always wise to build and manage your own performance testing tools and infrastructure. Through these services you can build, execute, and analyze performance tests.

  • Soasta – Build, execute, and analyze performance tests on a single, powerful, intuitive platform.

  • Apica – Cloud-based load testing for web and mobile applications

  • Blitz.io – Blitz allows you to continuously monitor your app 24×7 from around the world. You can emulate a single user or hundreds of users all day, every day and be notified immediately if anything goes wrong.

  • Blazemeter – BlazeMeter is a self- service performance & load testing cloud, 100% JMeter-compatible. Easily run tests of 30k, 50k, 80k or more concurrent users, on demand.

Deriving insights from performance and load testing
The goal of performance testing is to understand how your applications behave under heavy load conditions. Performance testing is only as useful as the intelligence it yields about your application’s bottlenecks. When running performance tests, you should always instrument your applications and infrastructure to understand what breaks and why. APM tools enable you to see the performance of your applications and infrastructure in real-time. To completely understand performance modern teams leverage real user monitoring to get visibility into the real performance of your end users across many browsers and platforms.

Everyone knows you should treat performance as a feature. Hopefully, you now have a path to get started on capacity planning and load testing the server-side, optimizing and performance testing the client-side, and how to monitor performance from end to end to derive meaningful insights from performance tests. For a more in-depth step by step walkthrough of the tools mentioned see my presentation on Performance Testing for Modern Apps on SpeakerDeck.

The post Performance Testing for Modern Apps appeared first on Application Performance Monitoring Blog | AppDynamics.

Read the original blog entry...

More Stories By AppDynamics Blog

In high-production environments where release cycles are measured in hours or minutes — not days or weeks — there's little room for mistakes and no room for confusion. Everyone has to understand what's happening, in real time, and have the means to do whatever is necessary to keep applications up and running optimally.

DevOps is a high-stakes world, but done well, it delivers the agility and performance to significantly impact business competitiveness.

IoT & Smart Cities Stories
All in Mobile is a place where we continually maximize their impact by fostering understanding, empathy, insights, creativity and joy. They believe that a truly useful and desirable mobile app doesn't need the brightest idea or the most advanced technology. A great product begins with understanding people. It's easy to think that customers will love your app, but can you justify it? They make sure your final app is something that users truly want and need. The only way to do this is by ...
Digital Transformation and Disruption, Amazon Style - What You Can Learn. Chris Kocher is a co-founder of Grey Heron, a management and strategic marketing consulting firm. He has 25+ years in both strategic and hands-on operating experience helping executives and investors build revenues and shareholder value. He has consulted with over 130 companies on innovating with new business models, product strategies and monetization. Chris has held management positions at HP and Symantec in addition to ...
DXWorldEXPO LLC announced today that Big Data Federation to Exhibit at the 22nd International CloudEXPO, colocated with DevOpsSUMMIT and DXWorldEXPO, November 12-13, 2018 in New York City. Big Data Federation, Inc. develops and applies artificial intelligence to predict financial and economic events that matter. The company uncovers patterns and precise drivers of performance and outcomes with the aid of machine-learning algorithms, big data, and fundamental analysis. Their products are deployed...
Dynatrace is an application performance management software company with products for the information technology departments and digital business owners of medium and large businesses. Building the Future of Monitoring with Artificial Intelligence. Today we can collect lots and lots of performance data. We build beautiful dashboards and even have fancy query languages to access and transform the data. Still performance data is a secret language only a couple of people understand. The more busine...
The challenges of aggregating data from consumer-oriented devices, such as wearable technologies and smart thermostats, are fairly well-understood. However, there are a new set of challenges for IoT devices that generate megabytes or gigabytes of data per second. Certainly, the infrastructure will have to change, as those volumes of data will likely overwhelm the available bandwidth for aggregating the data into a central repository. Ochandarena discusses a whole new way to think about your next...
CloudEXPO | DevOpsSUMMIT | DXWorldEXPO are the world's most influential, independent events where Cloud Computing was coined and where technology buyers and vendors meet to experience and discuss the big picture of Digital Transformation and all of the strategies, tactics, and tools they need to realize their goals. Sponsors of DXWorldEXPO | CloudEXPO benefit from unmatched branding, profile building and lead generation opportunities.
Cell networks have the advantage of long-range communications, reaching an estimated 90% of the world. But cell networks such as 2G, 3G and LTE consume lots of power and were designed for connecting people. They are not optimized for low- or battery-powered devices or for IoT applications with infrequently transmitted data. Cell IoT modules that support narrow-band IoT and 4G cell networks will enable cell connectivity, device management, and app enablement for low-power wide-area network IoT. B...
The hierarchical architecture that distributes "compute" within the network specially at the edge can enable new services by harnessing emerging technologies. But Edge-Compute comes at increased cost that needs to be managed and potentially augmented by creative architecture solutions as there will always a catching-up with the capacity demands. Processing power in smartphones has enhanced YoY and there is increasingly spare compute capacity that can be potentially pooled. Uber has successfully ...
SYS-CON Events announced today that CrowdReviews.com has been named “Media Sponsor” of SYS-CON's 22nd International Cloud Expo, which will take place on June 5–7, 2018, at the Javits Center in New York City, NY. CrowdReviews.com is a transparent online platform for determining which products and services are the best based on the opinion of the crowd. The crowd consists of Internet users that have experienced products and services first-hand and have an interest in letting other potential buye...
When talking IoT we often focus on the devices, the sensors, the hardware itself. The new smart appliances, the new smart or self-driving cars (which are amalgamations of many ‘things'). When we are looking at the world of IoT, we should take a step back, look at the big picture. What value are these devices providing. IoT is not about the devices, its about the data consumed and generated. The devices are tools, mechanisms, conduits. This paper discusses the considerations when dealing with the...