Welcome!

Java IoT Authors: Pat Romanski, Yeshim Deniz, Elizabeth White, Liz McMillan, Stackify Blog

Related Topics: Java IoT

Java IoT: Blog Post

Java Profilers: Three Types and Why You Need All of Them | @CloudExpo #Java #Cloud

Debugging performance issues in production can be a pain and in some cases impossible without the right tools

Java Profilers: Three Types and Why You Need All of Them
By Darin Howard

Debugging performance issues in production can be a pain and in some cases impossible without the right tools. Java profilers have been around forever, but the profilers most developers think about are only one type.

Lets dive into the three different kinds of Java profilers:

  1. Standard JVM Profilers that track every detail of the JVM (CPU, thread, memory, garbage collection, etc).
  2. Lightweight profilers that highlight your application with a bit of abstraction.
  3. Application Performance Management (APM) tools used for monitoring applications live in production environments.

Standard JVM profilers
Products like VisualVM, JProfiler, YourKit and Java Mission Control.

Standard profilers certainly provide the most data, but not necessarily the most usable information. This depends on the type of debugging task. These profilers will track all method calls and memory usage. This allows a developer to dive into the call structure at whatever angle they choose.

Pros:

  • Great for tracking down memory leaks, standard profilers detail out all memory usage by the JVM and which classes/objects are responsible.  The ability to manually run garbage collection and then review memory consumption can easily shine a spotlight on classes and processes that are holding on to memory in error.
  • Good for tracking CPU usage, profilers usually provide a CPU sampling feature to track and aggregate CPU time by class and method to help zero in on hot spots.

Cons:

  • Requires a direct connection to the monitored JVM, this ends up limiting usage to development environments in most cases. (Note: some profilers can work off thread and memory dumps in a limited fashion)
  • They slow down your application; a good deal of processing power is required for the high level of detail provided.

Lightweight Java transaction profilers

Products like XRebel and Stackify Prefix.

Lightweight profilers take a different approach at tracking your application by injecting themselves right into code.

  • Aspect Profilers use aspect oriented programming (AOP) to inject code into the start and end of specified methods. The injected code can start a timer and then report the elapsed time when the method finishes. These profilers are simple to setup but you need to know what to profile. For an example see Spring AOP Method Profiling.
  • Java Agent profilers use the Java Instrumentation API to inject code into your application. This method has greater access to your application since the code is being rewritten at the bytecode level. This allows for any code running in your application to be instrumented - be it code you wrote or 3rd party libraries your application depends on. Check out Introduction to Java Agents to see how this all works.

Aspect profilers are pretty easy to setup but are limited in what they can monitor and are encumbered by detailing out everything you want tracked.  Java Agents have a big advantage in their tracking depth, but are much more complicated to write.

Stackify Prefix is a developer oriented profiler using the Java Agent profiler method behind the scenes. The cool thing is that Prefix already knows the most desired classes and 3rd party libraries developers want instrumented - so you don't have to detail them all out. Plus it takes all the stats from the instrumentation and displays them in simple and understable manner. As an example when running an application using Hibernate, Prefix will not only detail out the elapsed time for queries,  but displays parameter values for the generated SQL. When your app calls to a SOAP/REST API, Prefix provides the request and response content.

Java profiler prefix example

Prefix Screenshot: Tomcat Web Request Trace

Low overhead, Java JVM profiling in production (APM)

APM tools like New Relic, AppDynamics, Stackify Retrace, Dynatrace.

All the profilers so far have been great for development, but tracking how you system performs in production is critical. Production is always a different landscape - development and staging setups typically don't have the same datasets and load.

Java APM tools typically use the Java Agent profiler method but with different instrumentation rules to allow them to run without affecting production performance. The trick with these profilers is to provide the right information in a smart way to not take up CPU cycles.

Stackify Retrace is an APM tool that uses the same tech as Stackify Prefix with a few adjustments to run smoothly in staging and production environments. This is done by  aggregating timing statistics and sampling traces. This gives you method level visibility to your applications code that is running production. So when you have a slow web request, that will translate into a trace showing up in Retrace. From there you can dive in and see what methods are the culprit.

java profiler performance aggregation

Retrace Screenshot: Web Request Aggregation over 4 hours

java profiling tomcat trace

Retrace Screenshot: Tomcat Web Request Trace

Why are some Java Profilers so expensive?

XRebel is a cool tool, but it costs $365 a year. Stackify Prefix is free and provides much of the same functionality

The biggest problem with APM solutions is definitely their pricing. They have traditionally been so expensive that only the largest enterprises could afford them. It doesn't make a lot of sense to spend $100 a month on a server at Azure or AWS and then spend another $200 a month for a product like New Relic.

Monitoring tools shouldn't cost more than the servers!

The post Java Profilers: 3 types and why you need all of them appeared first on Stackify.

Read the original blog entry...

More Stories By Stackify Blog

Stackify offers the only developers-friendly solution that fully integrates error and log management with application performance monitoring and management. Allowing you to easily isolate issues, identify what needs to be fixed quicker and focus your efforts – Support less, Code more. Stackify provides software developers, operations and support managers with an innovative cloud based solution that gives them DevOps insight and allows them to monitor, detect and resolve application issues before they affect the business to ensure a better end user experience. Start your free trial now stackify.com

@ThingsExpo Stories
Internet of @ThingsExpo, taking place October 31 - November 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA, is co-located with 21st Cloud Expo and will feature technical sessions from a rock star conference faculty and the leading industry players in the world. The Internet of Things (IoT) is the most profound change in personal and enterprise IT since the creation of the Worldwide Web more than 20 years ago. All major researchers estimate there will be tens of billions devic...
We build IoT infrastructure products - when you have to integrate different devices, different systems and cloud you have to build an application to do that but we eliminate the need to build an application. Our products can integrate any device, any system, any cloud regardless of protocol," explained Peter Jung, Chief Product Officer at Pulzze Systems, in this SYS-CON.tv interview at @ThingsExpo, held November 1-3, 2016, at the Santa Clara Convention Center in Santa Clara, CA
SYS-CON Events announced today that Ayehu will exhibit at SYS-CON's 21st International Cloud Expo®, which will take place on October 31 - November 2, 2017 at the Santa Clara Convention Center in Santa Clara California. Ayehu provides IT Process Automation & Orchestration solutions for IT and Security professionals to identify and resolve critical incidents and enable rapid containment, eradication, and recovery from cyber security breaches. Ayehu provides customers greater control over IT infras...
SYS-CON Events announced today that MobiDev, a client-oriented software development company, will exhibit at SYS-CON's 21st International Cloud Expo®, which will take place October 31-November 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. MobiDev is a software company that develops and delivers turn-key mobile apps, websites, web services, and complex software systems for startups and enterprises. Since 2009 it has grown from a small group of passionate engineers and business...
SYS-CON Events announced today that GrapeUp, the leading provider of rapid product development at the speed of business, will exhibit at SYS-CON's 21st International Cloud Expo®, which will take place October 31-November 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. Grape Up is a software company, specialized in cloud native application development and professional services related to Cloud Foundry PaaS. With five expert teams that operate in various sectors of the market acr...
SYS-CON Events announced today that Enzu will exhibit at SYS-CON's 21st Int\ernational Cloud Expo®, which will take place October 31-November 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. Enzu’s mission is to be the leading provider of enterprise cloud solutions worldwide. Enzu enables online businesses to use its IT infrastructure to their competitive advantage. By offering a suite of proven hosting and management services, Enzu wants companies to focus on the core of their ...
New competitors, disruptive technologies, and growing expectations are pushing every business to both adopt and deliver new digital services. This ‘Digital Transformation’ demands rapid delivery and continuous iteration of new competitive services via multiple channels, which in turn demands new service delivery techniques – including DevOps. In this power panel at @DevOpsSummit 20th Cloud Expo, moderated by DevOps Conference Co-Chair Andi Mann, panelists examined how DevOps helps to meet the de...
SYS-CON Events announced today that Cloud Academy named "Bronze Sponsor" of 21st International Cloud Expo which will take place October 31 - November 2, 2017 at the Santa Clara Convention Center in Santa Clara, CA. Cloud Academy is the industry’s most innovative, vendor-neutral cloud technology training platform. Cloud Academy provides continuous learning solutions for individuals and enterprise teams for Amazon Web Services, Microsoft Azure, Google Cloud Platform, and the most popular cloud com...
SYS-CON Events announced today that IBM has been named “Diamond Sponsor” of SYS-CON's 21st Cloud Expo, which will take place on October 31 through November 2nd 2017 at the Santa Clara Convention Center in Santa Clara, California.
In his session at Cloud Expo, Alan Winters, an entertainment executive/TV producer turned serial entrepreneur, presented a success story of an entrepreneur who has both suffered through and benefited from offshore development across multiple businesses: The smart choice, or how to select the right offshore development partner Warning signs, or how to minimize chances of making the wrong choice Collaboration, or how to establish the most effective work processes Budget control, or how to ma...
With major technology companies and startups seriously embracing Cloud strategies, now is the perfect time to attend 21st Cloud Expo October 31 - November 2, 2017, at the Santa Clara Convention Center, CA, and June 12-14, 2018, at the Javits Center in New York City, NY, and learn what is going on, contribute to the discussions, and ensure that your enterprise is on the right path to Digital Transformation.
SYS-CON Events announced today that CA Technologies has been named "Platinum Sponsor" of SYS-CON's 21st International Cloud Expo®, which will take place October 31-November 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. CA Technologies helps customers succeed in a future where every business - from apparel to energy - is being rewritten by software. From planning to development to management to security, CA creates software that fuels transformation for companies in the applic...
Multiple data types are pouring into IoT deployments. Data is coming in small packages as well as enormous files and data streams of many sizes. Widespread use of mobile devices adds to the total. In this power panel at @ThingsExpo, moderated by Conference Chair Roger Strukhoff, panelists looked at the tools and environments that are being put to use in IoT deployments, as well as the team skills a modern enterprise IT shop needs to keep things running, get a handle on all this data, and deliver...
In his session at @ThingsExpo, Eric Lachapelle, CEO of the Professional Evaluation and Certification Board (PECB), provided an overview of various initiatives to certify the security of connected devices and future trends in ensuring public trust of IoT. Eric Lachapelle is the Chief Executive Officer of the Professional Evaluation and Certification Board (PECB), an international certification body. His role is to help companies and individuals to achieve professional, accredited and worldwide re...
Amazon started as an online bookseller 20 years ago. Since then, it has evolved into a technology juggernaut that has disrupted multiple markets and industries and touches many aspects of our lives. It is a relentless technology and business model innovator driving disruption throughout numerous ecosystems. Amazon’s AWS revenues alone are approaching $16B a year making it one of the largest IT companies in the world. With dominant offerings in Cloud, IoT, eCommerce, Big Data, AI, Digital Assista...
No hype cycles or predictions of zillions of things here. IoT is big. You get it. You know your business and have great ideas for a business transformation strategy. What comes next? Time to make it happen. In his session at @ThingsExpo, Jay Mason, Associate Partner at M&S Consulting, presented a step-by-step plan to develop your technology implementation strategy. He discussed the evaluation of communication standards and IoT messaging protocols, data analytics considerations, edge-to-cloud tec...
"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.
IoT solutions exploit operational data generated by Internet-connected smart “things” for the purpose of gaining operational insight and producing “better outcomes” (for example, create new business models, eliminate unscheduled maintenance, etc.). The explosive proliferation of IoT solutions will result in an exponential growth in the volume of IoT data, precipitating significant Information Governance issues: who owns the IoT data, what are the rights/duties of IoT solutions adopters towards t...
With the introduction of IoT and Smart Living in every aspect of our lives, one question has become relevant: What are the security implications? To answer this, first we have to look and explore the security models of the technologies that IoT is founded upon. In his session at @ThingsExpo, Nevi Kaja, a Research Engineer at Ford Motor Company, discussed some of the security challenges of the IoT infrastructure and related how these aspects impact Smart Living. The material was delivered interac...
The Internet giants are fully embracing AI. All the services they offer to their customers are aimed at drawing a map of the world with the data they get. The AIs from these companies are used to build disruptive approaches that cannot be used by established enterprises, which are threatened by these disruptions. However, most leaders underestimate the effect this will have on their businesses. In his session at 21st Cloud Expo, Rene Buest, Director Market Research & Technology Evangelism at Ara...