Welcome!

Microservices Expo Authors: Elizabeth White, Pat Romanski, Jason Bloomberg, Mehdi Daoudi, Liz McMillan

Blog Feed Post

4 Reasons Why You Should Use APM When You Load Test Your Website

image_pdfimage_print

I wouldn’t do website load/performance testing any more without having an APM tool in place. Period. Full stop. End of story.

I’ve been involved in website load testing for over 10 years, as a “end-user” when I was web operations manager for an online job board, as a team leader for a company providing cloud load testing services, and as a consultant on web performance with my own company DevOpsGuys. The difference in the value you get from load/performance testing with and without APM tools is enormous.

We’ve probably all seen those testing reports that are full of graphs of response time versus req/sec, CPU utilisation curves, disk IO throughput, error rates ad nauseam. I, to my eternal shame, have even written them… and whilst they are useful for answering the (very simplistic) question of “how many simulated requests/users can my website support before it falls over?” generating any real application insight from what are essentially infrastructure metrics is difficult. This type of test report rarely results in any corrective actions other than (1) “lets throw more hardware at it” or (2) “let’s shout at the devs that they have to fix something because the application is slow”.  Quite often the report gets circular filed because no-one knows how to derive application insight and hence generate meaningful corrective actions at either the code, application stack configuration or infrastructure level. All that effort & expense is wasted.

So how are things different when using APM tools (like my preferred tool, AppDynamics)? Here are my top 4 reasons:

1. See the Big Picture (Systems Thinking)

“Systems thinking is a framework for seeing interrelationships rather than things, for seeing patterns rather than static snapshots.”  - Peter Senge, “The Fifth Discipline”.

The “first way of DevOps” is systems thinking, and APM tools reinforce the systems thinking perspective by helping you see the big picture very clearly. You can see the interrelationships between the web tier, application tier, database servers, message queues, external cloud services etc. in real time while you’re testing rather than being focussed on the metrics for each tier individually. You can instantly see where the bottlenecks in your application are in the example below the 4306ms calls to Navision stand out!

FlowMap

2. Drill Down to the Code Level

One of my favourite things when load testing with APM tools is being able to drill down to the stack trace level and identify the calls that are the most problematic. Suddenly, instead of talking about infrastructure metrics like CPU, RAM and Disk we are talking about application metrics — this business transaction (e.g. web page or API request) generates this flow across the application and 75% of the time is spent in this method call which makes 3 database calls and 2 web service calls and its this database call that’s slow and here’s the exact SQL statement that was executed. The difference in the response you get from the developer’s when you give them this level of detail compared to “your application is slow when we hit 200 users” is fantastic — now you are giving them real, pinpoint actionable intelligence on how their application responds under load.

DrillDown

 3. Iterate Faster

“the application was made 56x faster during a 12hr testing window”

Because you can move quickly to the code level in real-time while you test and because this facilitates better communication with the development team your load testing suddenly becomes a lot more collaborative, even if the load testing is being performed by an external 3rd party.

We generally have all the relevant parties on a conference call or HipChat chat session while we test and we are constantly exchanging information, screenshots, links to APM snapshots and the developers are often able to code fixes there and then because we can rapidly pinpoint the pain points.

If you’ve got a customer with an Agile mindset and continuous delivery capability it can enable you to do rapid test and fix cycles during testing, often multiple times times in a day. In one notable example, the application was made 56x faster during a 12hr testing window due to 4 application releases during that period.

56xFaster

4. Stop the “Blame Game”

“make the enemy poor performance, not each other…”

Traditionally in the old school (pre-APM tools) days, load tests were often conducted by external load testing consultancies who would come in, do the testing, and then deliver some big report on how things went.

The customer would assemble their team together in a conference room to go through the report, which often triggered the “blame game” – Ops blaming Dev, Dev blaming QA, QA blaming Ops, Ops blaming the hosting provider, the hosting provider blaming the customer’s code and around and around it would go.

But with the right APM tools in place we’ve found this negative team dynamic can be avoided.

As mentioned earlier, testing tends to become more collaborative because it’s easier to share the performance data in real time via the APM tool, and discussions become more evidence-based. It’s more about “what are we going to do about this problem we can see here in the APM tool” and less about trying to allocate blame when no-one really knows where the problem actually resides and they don’t want to be left holding the can. The system-thinking, holistic view of the application’s performance promulgated by the APM tool makes performance the enemy, not each other. And that means that the performance issues are likely to be fixed faster, and not ignored due to politics and infighting.

There are probably loads more reasons you can come up with for why load testing with APM tools are awesome (and I’d love you hear your thoughts in the comments), but I will leave you with one more bonus reason – because it’s fun. For me, using AppDynamics when I’m doing load testing and performance tuning has really bought the fun factor back into the work. It’s fun to see the load being applied to the system and to see (via AppDynamics) the effect across the entire application. It’s fun to work closer with the Dev & Ops teams (dare I say, “DevOps”!) and to share meaningful, actionable insights on where the problems lie, and it’s fun be able to rapidly iterate and show the performance improvements in real-time.

The post 4 Reasons Why You Should Use APM When You Load Test Your Website written by appeared first on Application Performance Monitoring Blog from AppDynamics.

Read the original blog entry...

More Stories By Jyoti Bansal

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.

@MicroservicesExpo Stories
Many organizations adopt DevOps to reduce cycle times and deliver software faster; some take on DevOps to drive higher quality and better end-user experience; others look to DevOps for a clearer line-of-sight to customers to drive better business impacts. In truth, these three foundations go together. In this power panel at @DevOpsSummit 21st Cloud Expo, moderated by DevOps Conference Co-Chair Andi Mann, industry experts will discuss how leading organizations build application success from all...
The last two years has seen discussions about cloud computing evolve from the public / private / hybrid split to the reality that most enterprises will be creating a complex, multi-cloud strategy. Companies are wary of committing all of their resources to a single cloud, and instead are choosing to spread the risk – and the benefits – of cloud computing across multiple providers and internal infrastructures, as they follow their business needs. Will this approach be successful? How large is the ...
Many organizations are now looking to DevOps maturity models to gauge their DevOps adoption and compare their maturity to their peers. However, as enterprise organizations rush to adopt DevOps, moving past experimentation to embrace it at scale, they are in danger of falling into the trap that they have fallen into time and time again. Unfortunately, we've seen this movie before, and we know how it ends: badly.
‘Trend’ is a pretty common business term, but its definition tends to vary by industry. In performance monitoring, trend, or trend shift, is a key metric that is used to indicate change. Change is inevitable. Today’s websites must frequently update and change to keep up with competition and attract new users, but such changes can have a negative impact on the user experience if not managed properly. The dynamic nature of the Internet makes it necessary to constantly monitor different metrics. O...
Enterprises are moving to the cloud faster than most of us in security expected. CIOs are going from 0 to 100 in cloud adoption and leaving security teams in the dust. Once cloud is part of an enterprise stack, it’s unclear who has responsibility for the protection of applications, services, and data. When cloud breaches occur, whether active compromise or a publicly accessible database, the blame must fall on both service providers and users. In his session at 21st Cloud Expo, Ben Johnson, C...
21st International Cloud Expo, taking place October 31 - November 2, 2017, 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. Me...
Today companies are looking to achieve cloud-first digital agility to reduce time-to-market, optimize utilization of resources, and rapidly deliver disruptive business solutions. However, leveraging the benefits of cloud deployments can be complicated for companies with extensive legacy computing environments. In his session at 21st Cloud Expo, Craig Sproule, founder and CEO of Metavine, will outline the challenges enterprises face in migrating legacy solutions to the cloud. He will also prese...
Most of the time there is a lot of work involved to move to the cloud, and most of that isn't really related to AWS or Azure or Google Cloud. Before we talk about public cloud vendors and DevOps tools, there are usually several technical and non-technical challenges that are connected to it and that every company needs to solve to move to the cloud. In his session at 21st Cloud Expo, Stefano Bellasio, CEO and founder of Cloud Academy Inc., will discuss what the tools, disciplines, and cultural...
The “Digital Era” is forcing us to engage with new methods to build, operate and maintain applications. This transformation also implies an evolution to more and more intelligent applications to better engage with the customers, while creating significant market differentiators. In both cases, the cloud has become a key enabler to embrace this digital revolution. So, moving to the cloud is no longer the question; the new questions are HOW and WHEN. To make this equation even more complex, most ...
With the rise of DevOps, containers are at the brink of becoming a pervasive technology in Enterprise IT to accelerate application delivery for the business. When it comes to adopting containers in the enterprise, security is the highest adoption barrier. Is your organization ready to address the security risks with containers for your DevOps environment? In his session at @DevOpsSummit at 21st Cloud Expo, Chris Van Tuin, Chief Technologist, NA West at Red Hat, will discuss: The top security r...
Agile has finally jumped the technology shark, expanding outside the software world. Enterprises are now increasingly adopting Agile practices across their organizations in order to successfully navigate the disruptive waters that threaten to drown them. In our quest for establishing change as a core competency in our organizations, this business-centric notion of Agile is an essential component of Agile Digital Transformation. In the years since the publication of the Agile Manifesto, the conn...
The nature of the technology business is forward-thinking. It focuses on the future and what’s coming next. Innovations and creativity in our world of software development strive to improve the status quo and increase customer satisfaction through speed and increased connectivity. Yet, while it's exciting to see enterprises embrace new ways of thinking and advance their processes with cutting edge technology, it rarely happens rapidly or even simultaneously across all industries.
These days, APIs have become an integral part of the digital transformation journey for all enterprises. Every digital innovation story is connected to APIs . But have you ever pondered over to know what are the source of these APIs? Let me explain - APIs sources can be varied, internal or external, solving different purposes, but mostly categorized into the following two categories. Data lakes is a term used to represent disconnected but relevant data that are used by various business units wit...
"NetApp's vision is how we help organizations manage data - delivering the right data in the right place, in the right time, to the people who need it, and doing it agnostic to what the platform is," explained Josh Atwell, Developer Advocate for NetApp, in this SYS-CON.tv interview at 20th Cloud Expo, held June 6-8, 2017, at the Javits Center in New York City, NY.
One of the biggest challenges with adopting a DevOps mentality is: new applications are easily adapted to cloud-native, microservice-based, or containerized architectures - they can be built for them - but old applications need complex refactoring. On the other hand, these new technologies can require relearning or adapting new, oftentimes more complex, methodologies and tools to be ready for production. In his general session at @DevOpsSummit at 20th Cloud Expo, Chris Brown, Solutions Marketi...
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...
DevOps at Cloud Expo – being held October 31 - November 2, 2017, 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 world's largest enterprises – and delivering real r...
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 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?
"When we talk about cloud without compromise what we're talking about is that when people think about 'I need the flexibility of the cloud' - it's the ability to create applications and run them in a cloud environment that's far more flexible,” explained Matthew Finnie, CTO of Interoute, in this SYS-CON.tv interview at 20th Cloud Expo, held June 6-8, 2017, at the Javits Center in New York City, NY.