|By AppDynamics Blog||
|May 8, 2014 12:00 PM EDT||
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!
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.
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.
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 Steve Thair (DevOpsGuys) appeared first on Application Performance Monitoring Blog from AppDynamics.
SYS-CON Events announced today that MangoApps will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY., and the 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. MangoApps provides private all-in-one social intranets allowing workers to securely collaborate from anywhere in the world and from any device. Social, mobile, and eas...
Mar. 29, 2015 03:00 PM EDT Reads: 3,012
SYS-CON Events announced today that Solgenia will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY, and the 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. Solgenia is the global market leader in Cloud Collaboration and Cloud Infrastructure software solutions. Designed to “Bridge the Gap” between Personal and Professional S...
Mar. 29, 2015 03:00 PM EDT Reads: 2,797
Hosted PaaS providers have given independent developers and startups huge advantages in efficiency and reduced time-to-market over their more process-bound counterparts in enterprises. Software frameworks are now available that allow enterprise IT departments to provide these same advantages for developers in their own organization. In his workshop session at DevOps Summit, Troy Topnik, ActiveState’s Technical Product Manager, will show how on-prem or cloud-hosted Private PaaS can enable organ...
Mar. 29, 2015 12:45 PM EDT Reads: 1,214
When it comes to microservices there are myths and uncertainty about the journey ahead. Deploying a “Hello World” app on Docker is a long way from making microservices work in real enterprises with large applications, complex environments and existing organizational structures. February 19, 2015 10:00am PT / 1:00pm ET → 45 Minutes Join our four experts: Special host Gene Kim, Gary Gruver, Randy Shoup and XebiaLabs’ Andrew Phillips as they explore the realities of microservices in today’s IT worl...
Mar. 29, 2015 12:45 PM EDT Reads: 1,809
Cloud computing is changing the way we look at IT costs, according to industry experts on a recent Cloud Luminary Fireside Chat panel discussion. Enterprise IT, traditionally viewed as a cost center, now plays a central role in the delivery of software-driven goods and services. Therefore, companies need to understand their cloud utilization and resulting costs in order to ensure profitability on their business offerings. Led by Bernard Golden, this fireside chat offers valuable insights on ho...
Mar. 29, 2015 12:45 PM EDT Reads: 782
OmniTI has expanded its services to help customers automate their processes to deliver high quality applications to market faster. Consistent with its focus on IT agility and quality, OmniTI operates under DevOps principles, exploring the flow of value through the IT delivery process, identifying opportunities to eliminate waste, realign misaligned incentives, and open bottlenecks. OmniTI takes a unique, value-centric approach by plotting each opportunity in an effort-payoff quadrant, then work...
Mar. 29, 2015 12:45 PM EDT Reads: 816
The world's leading Cloud event, Cloud Expo has launched Microservices Journal on the SYS-CON.com portal, featuring over 19,000 original articles, news stories, features, and blog entries. DevOps Journal is focused on this critical enterprise IT topic in the world of cloud computing. Microservices Journal offers top articles, news stories, and blog posts from the world's well-known experts and guarantees better exposure for its authors than any other publication. Follow new article posts on T...
Mar. 29, 2015 12:00 PM EDT Reads: 1,436
Modern Systems announced completion of a successful project with its new Rapid Program Modernization (eavRPMa"c) software. The eavRPMa"c technology architecturally transforms legacy applications, enabling faster feature development and reducing time-to-market for critical software updates. Working with Modern Systems, the University of California at Santa Barbara (UCSB) leveraged eavRPMa"c to transform its Student Information System from Software AG's Natural syntax to a modern application lev...
Mar. 29, 2015 11:00 AM EDT Reads: 986
For those of us that have been practicing SOA for over a decade, it's surprising that there's so much interest in microservices. In fairness microservices don't look like the vendor play that was early SOA in the early noughties. But experienced SOA practitioners everywhere will be wondering if microservices is actually a good thing. You see microservices is basically an SOA pattern that inherits all the well-known SOA principles and adds characteristics that address the use of SOA for distribut...
Mar. 29, 2015 11:00 AM EDT Reads: 1,002
Microservice architectures are the new hotness, even though they aren't really all that different (in principle) from the paradigm described by SOA (which is dead, or not dead, depending on whom you ask). One of the things this decompositional approach to application architecture does is encourage developers and operations (some might even say DevOps) to re-evaluate scaling strategies. In particular, the notion is forwarded that an application should be built to scale and then infrastructure sho...
Mar. 29, 2015 11:00 AM EDT Reads: 2,452
SYS-CON Events announced today the IoT Bootcamp – Jumpstart Your IoT Strategy, being held June 9–10, 2015, in conjunction with 16th Cloud Expo and Internet of @ThingsExpo at the Javits Center in New York City. This is your chance to jumpstart your IoT strategy. Combined with real-world scenarios and use cases, the IoT Bootcamp is not just based on presentations but includes hands-on demos and walkthroughs. We will introduce you to a variety of Do-It-Yourself IoT platforms including Arduino, Ras...
Mar. 29, 2015 11:00 AM EDT Reads: 2,086
Microservices are the result of decomposing applications. That may sound a lot like SOA, but SOA was based on an object-oriented (noun) premise; that is, services were built around an object - like a customer - with all the necessary operations (functions) that go along with it. SOA was also founded on a variety of standards (most of them coming out of OASIS) like SOAP, WSDL, XML and UDDI. Microservices have no standards (at least none deriving from a standards body or organization) and can be b...
Mar. 29, 2015 10:45 AM EDT Reads: 2,149
Our guest on the podcast this week is Jason Bloomberg, President at Intellyx. When we build services we want them to be lightweight, stateless and scalable while doing one thing really well. In today's cloud world, we're revisiting what to takes to make a good service in the first place. Listen in to learn why following "the book" doesn't necessarily mean that you're solving key business problems.
Mar. 29, 2015 10:45 AM EDT Reads: 1,267
Right off the bat, Newman advises that we should "think of microservices as a specific approach for SOA in the same way that XP or Scrum are specific approaches for Agile Software development". These analogies are very interesting because my expectation was that microservices is a pattern. So I might infer that microservices is a set of process techniques as opposed to an architectural approach. Yet in the book, Newman clearly includes some elements of concept model and architecture as well as p...
Mar. 29, 2015 10:15 AM EDT Reads: 2,127
Microservices, for the uninitiated, are essentially the decomposition of applications into multiple services. This decomposition is often based on functional lines, with related functions being grouped together into a service. While this may sound a like SOA, it really isn't, especially given that SOA was an object-centered methodology that focused on creating services around "nouns" like customer and product. Microservices, while certainly capable of being noun-based, are just as likely to be v...
Mar. 29, 2015 10:00 AM EDT Reads: 1,843
SYS-CON Events announced today the DevOps Foundation Certification Course, being held June ?, 2015, in conjunction with DevOps Summit and 16th Cloud Expo at the Javits Center in New York City, NY. This sixteen (16) hour course provides an introduction to DevOps – the cultural and professional movement that stresses communication, collaboration, integration and automation in order to improve the flow of work between software developers and IT operations professionals. Improved workflows will res...
Mar. 29, 2015 10:00 AM EDT Reads: 1,623
Even though it’s now Microservices Journal, long-time fans of SOA World Magazine can take comfort in the fact that the URL – soa.sys-con.com – remains unchanged. And that’s no mistake, as microservices are really nothing more than a new and improved take on the Service-Oriented Architecture (SOA) best practices we struggled to hammer out over the last decade. Skeptics, however, might say that this change is nothing more than an exercise in buzzword-hopping. SOA is passé, and now that people are ...
Mar. 29, 2015 09:00 AM EDT Reads: 1,251
An explosive combination of technology trends will be where ‘microservices’ and the IoT Internet of Things intersect, a concept we can describe by comparing it with a previous theme, the ‘X Internet.' The idea of using small self-contained application components has been popular since XML Web services began and a distributed computing future of smart fridges and kettles was imagined long back in the early Internet years.
Mar. 29, 2015 09:00 AM EDT Reads: 2,174
SOA Software has changed its name to Akana. With roots in Web Services and SOA Governance, Akana has established itself as a leader in API Management and is expanding into cloud integration as an alternative to the traditional heavyweight enterprise service bus (ESB). The company recently announced that it achieved more than 90% year-over-year growth. As Akana, the company now addresses the evolution and diversification of SOA, unifying security, management, and DevOps across SOA, APIs, microser...
Mar. 29, 2015 08:30 AM EDT Reads: 2,047
Exelon Corporation employs technology and process improvements to optimize their IT operations, manage a merger and acquisition transition, and to bring outsourced IT operations back in-house. To learn more about how this leading energy provider in the US, with a family of companies having $23.5 billion in annual revenue, accomplishes these goals we're joined by Jason Thomas, Manager of Service, Asset and Release Management at Exelon. The discussion is moderated by me, Dana Gardner, Principal A...
Mar. 29, 2015 07:30 AM EDT Reads: 767