The document outlines best practices and tips for application performance testing. It discusses defining test plans that include load testing, stress testing, and other types of performance testing. Key best practices include testing early and often using an iterative approach, taking a DevOps approach where development and operations work as a team, considering the user experience, understanding different types of performance tests, building a complete performance model, and including performance testing in unit tests. The document also provides tips to avoid such as not allowing enough time and using a QA system that differs from production.
Load Testing Best Practices: Application complexity is increasing, yet the stringent requirements for web performance is increasing exponentially. Learn more about the three major types of load testing, determine which you need and how to conduct them.
Load Testing Best Practices: Application complexity is increasing, yet the stringent requirements for web performance is increasing exponentially. Learn more about the three major types of load testing, determine which you need and how to conduct them.
Enterprise software needs to be faster than the competition.
In this presentation we will explore what is performance testing, why it is important and when should you implement these tests.
Implementing code-based load tests in JavaScript with the k6 performance testing tool.
Svetlin Nakov @ QA Challenge Accepted 2021
Load and performance testing aims to determine whether software meets speed, scalability and stability requirements under expected workloads. Old school performance testing tools like Apache JMeter are complex and heavy and are not well aligned with the modern QA automation and continuous integration trends.
In this talk Svetlin presents and demonstrates the "k6 framework" - a modern open-source load testing tool, which describes the load tests as JavaScript code. The k6 tool is very powerful, high-performance and developer-friendly. It allows load testing of Web apps and APIs, accessed through the HTTP protocol.
Svetlin also demonstrates how to install and use k6, how to run its test recorder, how to edit the recorded scripts at the k6 cloud and how to write k6 scripts in JavaScript (execute HTTP requests, write checks, define thresholds), and execute the scripts with certain number of virtual users for certain duration.
Hey folks,
Please find attached file with concept of window application or Desktop application testing concept, how it differ from client server application, what type of testing should be carried out on window application, how to perform it and related checklists etc.
hope this will be helpful to newbie of testing in window application.
Thanks,
Trupti
Performance Testing Using JMeter | EdurekaEdureka!
** Selenium Certification Training: https://www.edureka.co/testing-with-selenium-webdriver **
This Edureka PPT on Performance Testing Tutorial gives a complete insight on performance testing, its types, and how to do performance testing with the help of JMeter.
Below topics are covered in this PPT:
1:07 - Performance Testing Overview
3:03 - Performance Testing Types
3:54 - Performance Testing Problems
6:14 - Performance Testing Process
9:24 - Performance Testing examples
10:33 - Tools of Performance Testing
13:16 - Jmeter Demo
Follow us to never miss an update in the future.
Instagram: https://www.instagram.com/edureka_learning/
Facebook: https://www.facebook.com/edurekaIN/
Twitter: https://twitter.com/edurekain
LinkedIn: https://www.linkedin.com/company/edureka
Elevate your career with our Performance Testing Training in Hyderabad. Hands-on experience, industry certification, and job placement support for a brighter future in software testing.
Enterprise software needs to be faster than the competition.
In this presentation we will explore what is performance testing, why it is important and when should you implement these tests.
Implementing code-based load tests in JavaScript with the k6 performance testing tool.
Svetlin Nakov @ QA Challenge Accepted 2021
Load and performance testing aims to determine whether software meets speed, scalability and stability requirements under expected workloads. Old school performance testing tools like Apache JMeter are complex and heavy and are not well aligned with the modern QA automation and continuous integration trends.
In this talk Svetlin presents and demonstrates the "k6 framework" - a modern open-source load testing tool, which describes the load tests as JavaScript code. The k6 tool is very powerful, high-performance and developer-friendly. It allows load testing of Web apps and APIs, accessed through the HTTP protocol.
Svetlin also demonstrates how to install and use k6, how to run its test recorder, how to edit the recorded scripts at the k6 cloud and how to write k6 scripts in JavaScript (execute HTTP requests, write checks, define thresholds), and execute the scripts with certain number of virtual users for certain duration.
Hey folks,
Please find attached file with concept of window application or Desktop application testing concept, how it differ from client server application, what type of testing should be carried out on window application, how to perform it and related checklists etc.
hope this will be helpful to newbie of testing in window application.
Thanks,
Trupti
Performance Testing Using JMeter | EdurekaEdureka!
** Selenium Certification Training: https://www.edureka.co/testing-with-selenium-webdriver **
This Edureka PPT on Performance Testing Tutorial gives a complete insight on performance testing, its types, and how to do performance testing with the help of JMeter.
Below topics are covered in this PPT:
1:07 - Performance Testing Overview
3:03 - Performance Testing Types
3:54 - Performance Testing Problems
6:14 - Performance Testing Process
9:24 - Performance Testing examples
10:33 - Tools of Performance Testing
13:16 - Jmeter Demo
Follow us to never miss an update in the future.
Instagram: https://www.instagram.com/edureka_learning/
Facebook: https://www.facebook.com/edurekaIN/
Twitter: https://twitter.com/edurekain
LinkedIn: https://www.linkedin.com/company/edureka
Elevate your career with our Performance Testing Training in Hyderabad. Hands-on experience, industry certification, and job placement support for a brighter future in software testing.
Elevate your career with our Performance Testing Training in Hyderabad. Hands-on experience, industry certification, and job placement support for a brighter future in software testing.
performance testing training in hyderabadaparna3zen
Elevate your career with our Performance Testing Training in Hyderabad. Hands-on experience, industry certification, and job placement support for a brighter future in software testing.
Elevate your career with our Performance Testing Training in Hyderabad. Hands-on experience, industry certification, and job placement support for a brighter future in software testing.
Enhance your skills in performance testing with our comprehensive training program in Hyderabad. Gain hands-on experience, industry-recognized certification, and expert guidance to excel in this critical field of software testing. Our flexible schedules, experienced trainers, and job placement assistance ensure you're well-prepared for a successful career in performance testing.
Non-functional testing is the testing of a software application or system for its non-functional requirements: the way a system operates, rather than specific behaviours of that system.
Testing throughout the software life cycle - Testing & Implementationyogi syafrialdi
The development process adopted for a project will depend on the project aims and goals. There are numerous development life cycles that have been developed in order to achieve different required objectives.
This is chapter 1 of ISTQB Specialist Performance Tester certification. This presentation helps aspirants understand and prepare the content of the certification.
Mastering performance testing_ a comprehensive guide to optimizing applicatio...kalichargn70th171
In an increasingly digitized world where software applications shape our daily routines, the importance of their performance cannot be overstated. From browsing a website, and streaming content, to using an app for online shopping or banking - seamless, fast, and efficient operation is expected by end-users. Performance can be a make-or-break factor for the success of a software application, and therein lies the significance of performance testing.
Performance testing Web Application - A complete GuideTestingXperts
Application Performance testing validates various factors and checks applications to ensure and maintain their reliability and scalability. Leverage TestingXperts Performance testing services to enhance your application performance and such high performing apps are bound to drive more traffic and help spread your brand
Performance testing interview questions and answersGaruda Trainings
In software engineering, performance testing is in general testing performed to determine how a system performs in terms of responsiveness and stability under a particular workload. It can also serve to investigate, measure, validate or verify other quality attributes of the system, such as scalability, reliability and resource usage.
VTEST- A leading software testing company in India, specializing in comprehensive software testing services, including quality assurance, is based in Pune, India. Our expertise ensures robust and flawless software solutions, making VTEST a trusted choice for businesses seeking top-notch software testing services. Visit www.vtestcorp.com for details.
Similar to Best Practices for Applications Performance Testing (20)
A tale of scale & speed: How the US Navy is enabling software delivery from l...sonjaschweigert1
Rapid and secure feature delivery is a goal across every application team and every branch of the DoD. The Navy’s DevSecOps platform, Party Barge, has achieved:
- Reduction in onboarding time from 5 weeks to 1 day
- Improved developer experience and productivity through actionable findings and reduction of false positives
- Maintenance of superior security standards and inherent policy enforcement with Authorization to Operate (ATO)
Development teams can ship efficiently and ensure applications are cyber ready for Navy Authorizing Officials (AOs). In this webinar, Sigma Defense and Anchore will give attendees a look behind the scenes and demo secure pipeline automation and security artifacts that speed up application ATO and time to production.
We will cover:
- How to remove silos in DevSecOps
- How to build efficient development pipeline roles and component templates
- How to deliver security artifacts that matter for ATO’s (SBOMs, vulnerability reports, and policy evidence)
- How to streamline operations with automated policy checks on container images
Welocme to ViralQR, your best QR code generator.ViralQR
Welcome to ViralQR, your best QR code generator available on the market!
At ViralQR, we design static and dynamic QR codes. Our mission is to make business operations easier and customer engagement more powerful through the use of QR technology. Be it a small-scale business or a huge enterprise, our easy-to-use platform provides multiple choices that can be tailored according to your company's branding and marketing strategies.
Our Vision
We are here to make the process of creating QR codes easy and smooth, thus enhancing customer interaction and making business more fluid. We very strongly believe in the ability of QR codes to change the world for businesses in their interaction with customers and are set on making that technology accessible and usable far and wide.
Our Achievements
Ever since its inception, we have successfully served many clients by offering QR codes in their marketing, service delivery, and collection of feedback across various industries. Our platform has been recognized for its ease of use and amazing features, which helped a business to make QR codes.
Our Services
At ViralQR, here is a comprehensive suite of services that caters to your very needs:
Static QR Codes: Create free static QR codes. These QR codes are able to store significant information such as URLs, vCards, plain text, emails and SMS, Wi-Fi credentials, and Bitcoin addresses.
Dynamic QR codes: These also have all the advanced features but are subscription-based. They can directly link to PDF files, images, micro-landing pages, social accounts, review forms, business pages, and applications. In addition, they can be branded with CTAs, frames, patterns, colors, and logos to enhance your branding.
Pricing and Packages
Additionally, there is a 14-day free offer to ViralQR, which is an exceptional opportunity for new users to take a feel of this platform. One can easily subscribe from there and experience the full dynamic of using QR codes. The subscription plans are not only meant for business; they are priced very flexibly so that literally every business could afford to benefit from our service.
Why choose us?
ViralQR will provide services for marketing, advertising, catering, retail, and the like. The QR codes can be posted on fliers, packaging, merchandise, and banners, as well as to substitute for cash and cards in a restaurant or coffee shop. With QR codes integrated into your business, improve customer engagement and streamline operations.
Comprehensive Analytics
Subscribers of ViralQR receive detailed analytics and tracking tools in light of having a view of the core values of QR code performance. Our analytics dashboard shows aggregate views and unique views, as well as detailed information about each impression, including time, device, browser, and estimated location by city and country.
So, thank you for choosing ViralQR; we have an offer of nothing but the best in terms of QR code services to meet business diversity!
Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...Ramesh Iyer
In today's fast-changing business world, Companies that adapt and embrace new ideas often need help to keep up with the competition. However, fostering a culture of innovation takes much work. It takes vision, leadership and willingness to take risks in the right proportion. Sachin Dev Duggal, co-founder of Builder.ai, has perfected the art of this balance, creating a company culture where creativity and growth are nurtured at each stage.
The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
Key Trends Shaping the Future of Infrastructure.pdfCheryl Hung
Keynote at DIGIT West Expo, Glasgow on 29 May 2024.
Cheryl Hung, ochery.com
Sr Director, Infrastructure Ecosystem, Arm.
The key trends across hardware, cloud and open-source; exploring how these areas are likely to mature and develop over the short and long-term, and then considering how organisations can position themselves to adapt and thrive.
UiPath Test Automation using UiPath Test Suite series, part 3DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 3. In this session, we will cover desktop automation along with UI automation.
Topics covered:
UI automation Introduction,
UI automation Sample
Desktop automation flow
Pradeep Chinnala, Senior Consultant Automation Developer @WonderBotz and UiPath MVP
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
Le nuove frontiere dell'AI nell'RPA con UiPath Autopilot™UiPathCommunity
In questo evento online gratuito, organizzato dalla Community Italiana di UiPath, potrai esplorare le nuove funzionalità di Autopilot, il tool che integra l'Intelligenza Artificiale nei processi di sviluppo e utilizzo delle Automazioni.
📕 Vedremo insieme alcuni esempi dell'utilizzo di Autopilot in diversi tool della Suite UiPath:
Autopilot per Studio Web
Autopilot per Studio
Autopilot per Apps
Clipboard AI
GenAI applicata alla Document Understanding
👨🏫👨💻 Speakers:
Stefano Negro, UiPath MVPx3, RPA Tech Lead @ BSP Consultant
Flavio Martinelli, UiPath MVP 2023, Technical Account Manager @UiPath
Andrei Tasca, RPA Solutions Team Lead @NTT Data
Transcript: Selling digital books in 2024: Insights from industry leaders - T...BookNet Canada
The publishing industry has been selling digital audiobooks and ebooks for over a decade and has found its groove. What’s changed? What has stayed the same? Where do we go from here? Join a group of leading sales peers from across the industry for a conversation about the lessons learned since the popularization of digital books, best practices, digital book supply chain management, and more.
Link to video recording: https://bnctechforum.ca/sessions/selling-digital-books-in-2024-insights-from-industry-leaders/
Presented by BookNet Canada on May 28, 2024, with support from the Department of Canadian Heritage.
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
Encryption in Microsoft 365 - ExpertsLive Netherlands 2024Albert Hoitingh
In this session I delve into the encryption technology used in Microsoft 365 and Microsoft Purview. Including the concepts of Customer Key and Double Key Encryption.
Essentials of Automations: Optimizing FME Workflows with ParametersSafe Software
Are you looking to streamline your workflows and boost your projects’ efficiency? Do you find yourself searching for ways to add flexibility and control over your FME workflows? If so, you’re in the right place.
Join us for an insightful dive into the world of FME parameters, a critical element in optimizing workflow efficiency. This webinar marks the beginning of our three-part “Essentials of Automation” series. This first webinar is designed to equip you with the knowledge and skills to utilize parameters effectively: enhancing the flexibility, maintainability, and user control of your FME projects.
Here’s what you’ll gain:
- Essentials of FME Parameters: Understand the pivotal role of parameters, including Reader/Writer, Transformer, User, and FME Flow categories. Discover how they are the key to unlocking automation and optimization within your workflows.
- Practical Applications in FME Form: Delve into key user parameter types including choice, connections, and file URLs. Allow users to control how a workflow runs, making your workflows more reusable. Learn to import values and deliver the best user experience for your workflows while enhancing accuracy.
- Optimization Strategies in FME Flow: Explore the creation and strategic deployment of parameters in FME Flow, including the use of deployment and geometry parameters, to maximize workflow efficiency.
- Pro Tips for Success: Gain insights on parameterizing connections and leveraging new features like Conditional Visibility for clarity and simplicity.
We’ll wrap up with a glimpse into future webinars, followed by a Q&A session to address your specific questions surrounding this topic.
Don’t miss this opportunity to elevate your FME expertise and drive your projects to new heights of efficiency.
SAP Sapphire 2024 - ASUG301 building better apps with SAP Fiori.pdfPeter Spielvogel
Building better applications for business users with SAP Fiori.
• What is SAP Fiori and why it matters to you
• How a better user experience drives measurable business benefits
• How to get started with SAP Fiori today
• How SAP Fiori elements accelerates application development
• How SAP Build Code includes SAP Fiori tools and other generative artificial intelligence capabilities
• How SAP Fiori paves the way for using AI in SAP apps
SAP Sapphire 2024 - ASUG301 building better apps with SAP Fiori.pdf
Best Practices for Applications Performance Testing
1. Best Practices & Tips For
Applications Performance
Testing
Bhaskara Reddy Sannapureddy, Senior Project Manager @Infosys, +91-7702577769
2. What is Application Performance
Testing? - Introduction
Proper performance testing will help determine if a system meets certain acceptable criteria for both
responsiveness and robustness while under reasonable load. Although responsiveness varies—it
could be the reaction time to user input or the amount of latency between server request/response
cycles—it’s typically something that can be measured directly.
Robustness also varies by system, but it typically translates into a measurement of stability,
scalability, and overall system reliability.
Instead of dealing with the subjective, a successful approach to performance testing involves precise
plans and well-thought-out goals.
Start by defining test plans that include load testing, stress testing, endurance testing, availability
testing, configuration testing, and isolation testing. Couple these plans with precise metrics in terms of
goals, acceptable measurements thresholds, and a plan to deal with performance issues for the best
results.
This should include measurements such as average response time over predefined timeframes,
graphs of standard deviation, absolute timings, average latency, and request/response outliers,
among others.
3. Best Practices
1. Test Early and Often
Performance testing is often an afterthought, performed in haste late in the development cycle, or only
in response to user complaints. Instead, take an agile approach using iterative based testing throughout
the entire development lifecycle. The agile methodology has become popular due to the advantages of
frequent iteration, the involvement of all stakeholders, and the continuous course of corrections it
provides. The advantages compound when you take a continuous testing approach, involving more
than development, which takes us to the second and related performance testing best practice.
2. Take a DevOps Approach
Soon after the lean movement inspired agile, IT organizations saw the need to unify development and
IT operations activities. The result is the DevOps approach, where developers and IT work together to
define, build, and deploy software as a team. Just as agile organizations often embrace a continuous,
test-driven development process, DevOps should include developers, IT operations, and testers
working together to build, deploy, tune and configure applicable systems, and execute performance
tests against the end-product as a team.
4. Best Practices
3. Consider Users, Not Just Servers
Performance tests often focus on the results of servers and clusters running
software. Don’t forget that real people use software, and that performance tests
should measure the human element as well. For instance, measuring the
performance of clustered servers may return satisfactory results, but users on a
single overloaded or troubled server may experience an unsatisfactory result.
Instead, tests should include the per-user experience of performance, and user
interface timings should be captured systematically in conjunction with server
metrics.
To illustrate, if only one percent of one million request/response cycles are latent, ten
thousand people—an alarming number—will have experienced poor performance
with your application. Driving your performance testing from the single user point of
view helps you understand what each user of your system will experience before it’s
an issue.
5. Best Practices
4. Understand Performance Test Definitions
It’s crucial to have a common definition for the types of performance tests that should
be executed against your applications, such as:
• Single User Tests. Testing with one active user yields the best possible
performance, and response times can be used for baseline measurements.
• Load Tests. Understand the behavior of the system under average load, including
the expected number of concurrent users performing a specific number of
transactions within an average hour. Perform common tests with added system load,
additional concurrent users, and so on. Measure system capacity, and know the true
maximum load of the system while it still meets performance goals.
• Peak Load Tests. Understand system behavior under the heaviest usage
anticipated for concurrent number of users and transaction rates.
• Endurance (Soak) Tests. Determine the longevity of components, and if the
system can sustain average to peak load over a predefined duration. Memory
utilization should be monitored to detect potential leaks. The testing will also ensure
that throughput and response times after sustained activity continue to meet
performance goals.
6. Best Practices
• Stress Tests. Understand the upper limits of capacity within the
system by purposely pushing it to its breaking point. This helps to
determine the system’s robustness in terms of extreme load
and helps identify both potential scalability issues and breaking
points.
• High Availability Tests. Validate how the system behaves during
a failure condition while under load. There are many operational
use cases that should be included, such as:
Seamless failover of network equipment, hardware,
application servers, and databases
Rolling server restarts
Loss of a server within a cluster
7. Best Practices
Seamless addition and removal of nodes
Seamless patch or upgrade of software and firmware
where applicable
System functionality and performance during a server
failover before it happens in production
The impact of network bandwidth variation, such as during
a communications link failure
• Configuration/Tuning Tests. Assess the effect of changing
system parameters or software versions. A reasonable goal is to
maintain 80 percent to 85 percent optimal performance during, for
example, an application server upgrade.
8. Best Practices
• Isolation Tests. Measure the performance of typical silo
components, such as service oriented architecture (SOA)
systems, user interfaces, and legacy systems. Include
virtualization-based testing for web services, REST services,
message-oriented middleware solutions, and others, where the
actual systems need not be included in the tests.
9. Best Practices
5. Build a Complete Performance Model
Measuring your application’s performance includes understanding
your system’s capacity. This includes planning what the steady
state will be in terms of concurrent users, simultaneous
requests, average user sessions, and server utilization during
peak periods of the day. Additionally, you should define
performance goals, such as maximum response times, system
scalability, user satisfaction marks, acceptable performance
metrics, and maximum capacity for all of these metrics.
It’s crucial to define related thresholds that will alert you to
potential performance issues as you pass those thresholds.
Multiple thresholds need to be defined with increasing levels of
risk.
10. Best Practices
The associated levels of alerts can be used not only to define a
response to a potentially escalating performance problem, but also
help you work with DevOps to further tune the environment and
refine your production system monitoring. True to the agile approach,
capacity planning and measurement creates a feedback loop that
improves both your application’s performance and your monitoring
and measurement of that performance.
An effective planning processing includes the definition of success
criteria, such as:
Key Performance Indicators (KPI), including average latency,
request/response times, and server utilization
Business Process Completion Rate, including transactions per
second, and system throughput load profiles for average, peak, and
spike tests
Hardware metrics, including CPU usage, memory usage, and
network traffic
11. Best Practices
6. Include Performance Testing in Development Unit Tests
Waiting until a system is mostly built or complete to run performance
tests can make it harder to isolate where problems exist. It’s often
more costly to correct performance issues later in the development
process, and more risky to make changes if functional testing has
already been completed.
As a result, developers should include performance testing as part
of their unit tests, in addition to dedicated performance testing.
There’s a significant difference in the testing approaches, as unit
testing often focuses on sections of code, not just application
functionality or the integrated system. This means developers will be
intimately involved with the performance of their code throughout the
development process, and everyone will have a leg up on knowing
how to monitor individual components for issues in production.
12. Best Practices
7. Define Baselines for Important System Functions
In most cases, QA systems don’t match production systems.
Having baseline performance measurements of each system
can give you reasonable goals for each environment used for
testing. They specifically provide an important starting point for
response time goals where there are no previous metrics,
without having to guess or base them on other applications.
Baseline performance tests and measurements, such as single-
user login time, the request/response time for individual screens
and so on, should occur with no system load.
13. Best Practices
8. Perform Modular and System Performance Tests
Modern applications are composed of many individual complex
systems, including databases, application servers, web services,
legacy systems, and so on. All of these systems need to be
performance tested individually and together. This helps expose
the weak links, learn which systems adversely affect others, and
understand which systems to isolate for further
performance tuning.
14. Best Practices
9. Measure Averages, but Include Outliers
When testing performance, you need to know average response
time, but this measurement can be misleading by itself. For example,
if you strictly measure the average response time for your application
at less than five seconds, and this is within target, your related
performance tests will pass. However, some of those responses may
have been at or well beyond five seconds, leading to a poor
experience for those affected users. Be sure to include other metrics
such as 90th percentile or standard deviation to get a better view of
system performance.
15. Best Practices
KPIs can be measured by looking at the average and standard
deviations. For example, set a performance goal at the average
response time plus one standard deviation beyond it. In many
systems, this improved measurement affects the pass/fail criteria of
the test, matching the actual user experience more accurately.
Transactions with a high standard deviation can be tuned to reduce
system response time variability and improve overall user
experience.
16. Best Practices
10. Consistently Report and Analyze the Results
Performance test design and execution are important, but test reports
are important as well. Reports communicate the results of your
application’s behavior to everyone within your organization, and can
even serve as bragging rights for project owners and developers.
Analyzing and reporting results consistently also helps to define
attack plans for fixes. Remember to consider your audience, since
reports for developers should differ from reports sent to project
owners, managers, corporate executives, and even customers if
applicable. With each report, note obvious software changes made
(enhancements, bug fixes, and so on) as well as any other changes
tested (third-party software upgrades, changes to environment,
hardware, and so on).
17. Tips to Avoid
In addition to following a set of best practices for performance testing,
there are common mistakes to avoid. These include:
Not allowing enough time. Build time into the schedule up front.
Throwing software “over the wall.”
Keep developers involved by including performance in unit testing
efforts.
Using a QA system that differs greatly from production in terms of
size, configuration, and/or underlying hardware.
Insufficient software tuning.
Failing to define a troubleshooting plan. This includes having known
responses to performance issues, and production run books for error
or failover situations.
18. Takeaways
The best practices for performance testing include proper
definition and planning, scheduling time upfront, remaining agile
in your approach, testing early and often, getting as much of the
organization involved as possible, testing all components
together and separately end-to-end, considering failure
scenarios, measuring thoroughly, and reporting results properly.
Additionally, remember to avoid throwing software “over the wall”
to a separate testing organization, and ensure that your QA
platforms match production as closely as possible.
As with any profession, your efforts are only as good as the tools
you use. Be sure to include a mix of manual and automated
testing across all systems.