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Java Virtual Machine | @CloudExpo @Stackify #DX #JVM #Java #Virtualization
The application we'll monitor to exemplify these metrics is a real-world Java web application built using the Spring framework

A Deep Dive into the Core Metrics of the Java Virtual Machine
By Eugen Paraschiv

Overview of JVM Metrics

In this article, we'll cover how you can monitor an application that runs on the Java Virtual Machine by going over some of the critical metrics you need to track. And, as a monitoring tool, we'll use Stackify Retrace, a full APM solution.

The application we'll monitor to exemplify these metrics is a real-world Java web application built using the Spring framework. Users can register, login, connect their Reddit account and schedule their posts to Reddit.

How JVM Memory Works
There are two important types of JVM memory to watch: heap and non-heap memory, each of these with its own purpose.

The heap memory is where the JVM stores runtime data represented by allocated instances. This is where memory for new objects comes from, and is released when the Garbage Collector runs.

When the heap space runs out, the JVM throws an OutOfMemoryError. Therefore, it's very important to monitor the evolution of free and used heap memory to prevent the JVM from slowing down and eventually crashing.

The non-heap memory is where the JVM stores class-level information such as the fields and methods of a class, method code, runtime constant pool and internalized Strings.

Running out of non-heap memory can indicate there is a large number of Strings being internalized or a classloader leak.

JVM Memory Status in Retrace
Retrace can provide information regarding JVM memory status based on existing JMX beans.

To view this graph, you first have to enable remote JMX monitoring on your server. Then, you have to set up the JMX connection in Retrace.

Finally, in the Dashboard corresponding to your application, you'll find the JVM Memory graph:

Dashboard corresponding to your application, you'll find the JVM Memory graph

Here you can check the evolution of both types of memory over a selected time period, as well as mouse over the graph to find the exact values at a given time.

Of the total 400 MB the example application started with, approximately half are free at any time, which is more than enough for its proper functioning. If you notice that you're running low on memory, you can increase the JVM memory on startup, as well as investigate a potential memory leak.

With Retrace, you can also set up monitors for a certain metric's values with different severity levels.

Let's set up two monitors for JVM heap and non-heap memory:

Let's set up two monitors for JVM heap and non-heap memory

If the memory exceeds any of these thresholds, you'll receive a notification on the Retrace dashboard.

Garbage Collection
In conjunction with JVM memory, it's important you monitor the garbage collection process, since this is the process that reclaims used memory.

If the JVM spends more than 98% of the time doing garbage collection and reclaims less than 2% memory, it will throw an OutOfMemoryError with the message "GC Overhead limit exceeded".

This can be another indication of a memory leak, or it can simply mean the application needs more heap space.

Retrace can show you how many times the GC runs per minute and how long each run lasts on average:

Retrace can show you how many times the GC runs per minute and how long each run lasts on average

These metrics are also based on JMX beans and split between minor and major collections.

The minor collections free up memory from Young Space. The major collections reclaim memory from Tenured Space, which contains objects older than 15 GC cycles.

You can then verify each metric in more detail:

Here, minor JVM garbage collections take a maximum time of 9 ms

Here, minor collections take a maximum time of 9 ms.

The GC runs are not very frequent, nor do they take a long time. Therefore, the conclusion, in this case, is that there is no heap allocation issue in the application.

JVM Threads
Another JVM metric to monitor is number of active threads. If this is too high, it can slow down your application, and even the server it runs on.

Let's verify JVM threads status in the Retrace Dashboard:

verify JVM threads status in the Retrace Dashboard

Currently, there are 35 active threads.

The dashboard displays the same information as a graph over a period of time:

JVM Threads

In this case, the JVM uses 34 active threads on average.

A higher number of threads means an increase in processor utilization caused by the application. This is mainly due to the processing power required by each thread. The need for the processor to frequently switch between threads also causes additional work.

On the other hand, if you expect to receive a lot of concurrent requests, then an increase in number of threads used can be helpful to decrease the response time for your users.

You can use this information in association with the CPU utilization percentage to verify if the application is causing high CPU load:

You can use this information in association with the CPU utilization percentage to verify if the application is causing high CPU load

In the graph above, the CPU utilization is less than 1% so there is no reason for concern.

Of course, you can set monitors for each of these metrics in the same way as the JVM memory monitor.

Conclusion
The JVM is a complex process that requires monitoring for several key metrics that indicate the health and performance of your running application.

APM tools can make this task a lot easier by recording data on the most important metrics and displaying it in a helpful format that's more convenient to read and interpret. As a consequence, choosing the right APM tool is vital for successfully running and maintaining your application.

Stackify Retrace provides information on the most commonly utilized JVM metrics in both text and graph form. Also, you can use it to set monitors and alerts, add custom metrics, view and filter logs and configure performance management.

Above all, an APM tool is a must-have for the success of your application.

The post A Deep Dive into the Core Metrics of the Java Virtual Machine appeared first on Stackify.

CloudExpo | DXWorldEXPO have announced the conference tracks for Cloud Expo 2018, introducing DXWorldEXPO.

DXWordEXPO, colocated with Cloud Expo will be held June 5-7, 2018, at the Javits Center in New York City, and November 6-8, 2018, at the Santa Clara Convention Center, Santa Clara, CA.

Digital Transformation (DX) is a major focus with the introduction of DXWorld Expo within the program. Successful transformation requires a laser focus on being data-driven and on using all the tools available that enable transformation if they plan to survive over the long term.

A total of 88% of Fortune 500 companies from a generation ago are now out of business. Only 12% still survive. Similar percentages are found throughout enterprises of all sizes.

Cloud Expo | DXWorldEXPO 2018 New York
(June 5-7, 2018, Javits Center, Manhattan)

Cloud Expo | DXWorldEXPO 2018 Silicon Valley
(November 6-8, 2018, Santa Clara Convention Center, CA)

Full Conference Registration "Gold Pass" and Exhibit HallHere (Register ▸ Here via EventBrite)

DX World EXPO, LLC., a Lighthouse Point, Florida-based startup trade show producer and the creator of DXWorldEXPO® - Digital Transformation Conference & Expo has announced its conference agenda, with three major themes:

* Technology - The Revolution Continues
* Economy - The 21st Century Emerges
* Society - The Big Issues

"DX encompasses the continuing technology revolution, and is addressing society's most important issues throughout the entire $78 trillion 21st-century global economy," said Roger Strukhoff, Conference Chair. "DXWorldExpo has organized these issues along 10 tracks with more than 500 of the world's top speakers coming to Istanbul to help change the world."

There are 10 tracks running throughout the event and following the major themes. More than 500 breakout sessions will be featured, along with keynotes and general sessions from some of the world's top technology, business, and societal leaders. The event will be held over five days in Istanbul, reflecting the global nature of Digital Transformation and the city's long and historic role as a key business and intellectual center and linchpin between East and West.

Full Conference Registration "Gold Pass" and Exhibit HallHere (Register ▸ Here via EventBrite)

DX World Expo's Global Themes and Tracks are as follows:

Technology - The Revolution Continues

DX Tech: Data-Driven Global 2000
DX Tech: The Blockchain Challenge
DX Tech: AI and Cognitive
DX Tech: The Global Cloud

Economy - The 21st Century Emerges

DX Econ: Software is Rewriting the World
DX Econ: Smart Cities, Nations, and Regions
DX Econ: FinTech and the Token Economy
DX Econ: The Industrial Internet and Industrie 4.0

Society - The Big Issues

DX Society: Environment
DX Society: Education
DX Society: Agriculture
DX Society: Health Care

Call for Papers -speaking opportunities- as well as sponsorship and exhibit opportunities will open on November 1, 2017.

World's Most Important Tech Event
DXWorldEXPO® will be the world's most important tech event with 1,000 exhibitors in its first year and 2,000 exhibitors in its second year, as it guides Global 2000 companies through their Digital Transformation journey for the next two decades. The global event is set to launch September 17-20, 2018 in Istanbul. It will be sponsored by Fortune 50 companies, and more than 30 international banks will be among sponsors of its FinTech/InsurTech track.

Gaining a better understanding of customers and acting upon this information is the foundation of Digital Transformation (DX) in the enterprise. Applying the latest technologies in this area is the key to driving new topline revenue opportunities.

Global 2000 companies have more than US$40 trillion in annual revenue - more than 50% of the world's entire GDP. The Global 2000 spends a total of US$2.4 trillion annually on enterprise IT. The average Global 2000 company has US$11 billion in annual revenue. The average Global 2000 company spends more than $600 million annually on enterprise IT.

Governments throughout the world spend another US$500 billion on IT - much of it dedicated to new Smart City initiatives. There are more than a dozen Global 2000 companies in Turkey, including Isbank, Garanti Bank, other financial institutions, Turk Telecom, Turkcell, Turkish Airlines, and ENKA.

Cloud Expo | DXWorldEXPO 2018 New York
(June 5-7, 2018, Javits Center, Manhattan)

Cloud Expo | DXWorldEXPO 2018 Silicon Valley
(November 6-8, 2018, Santa Clara Convention Center, CA)

Full Conference Registration "Gold Pass" and Exhibit HallHere (Register ▸ Here via EventBrite)

More Management Quotes
"For the past 10 years at Cloud Expo, we've helped drive the migration to modern enterprise IT infrastructures, built upon the foundation of cloud computing. Today's hybrid, multiple cloud IT infrastructures integrate Big Data, analytics, blockchain, the IoT, mobile devices, and the latest in cryptography and enterprise-grade security," said Fuat Kircaali, Chairman and founder of DX World Expo, LLC.

"As a report from the World Economic Forum and Accenture recently stated, 'Companies need to fundamentally change the way they identify, develop and launch new business ventures.' We agree," said Carmen Gonzalez, president of DX World Expo, LLC.

"Digital Transformation is the key issue driving the global enterprise IT business," said Roger Strukhoff, Conference Chair and Executive Director of the Tau Institute for Global ICT Studies. "DX is most prominent among Global 2000 enterprises and government institutions. Our new event in Istanbul brings together the top companies and delegates from around the world, who are transforming the world."

2018 Conference Agenda and Tracks, June 5-7, Javits Center

Track 1 | Cloud Expo - Enterprise Cloud
Track 2 | DXWorld Expo - Digital Transformation (DX)
Track 3 | The API Enterprise | Mobility & Security
Track 4 | DevOps | Containers & Microservices
Track 5 | Cognitive Computing | AI, ML, DL
Track 6 | Big Data | Analytics
Track 7 | IoT | IIoT | Smart Cities
Track 8 | Hot Topics | FinTech | WebRTC

Cloud Expo covers all of these tools, with the most comprehensive program and more than 120 top world-class speakers throughout our Industry presenting Keynotes, General Sessions, Breakout Sessions along eight focused tracks, as well as our signature Power Panels. Our expo floor brings together the world's leading companies throughout the world of Cloud Computing, DX, and all they entail.

As your enterprise creates a vision and strategy that enables you to create your own unique, long-term success, learning about all the technologies involved is essential. Companies today not only form multi-cloud and hybrid cloud architectures, but create them with built-in cognitive capabilities. Cloud-native thinking is now the norm in financial services, manufacturing, telco, healthcare, transportation, energy, media, entertainment, retail and other consumer industries, as well as the public sector.

Cloud Expo is the world's most important, independent event where technology buyers and vendors meet to experience and discuss the big picture of Digital Tranformation and all of the strategies, tactics, and tools they need to realize their goals.

Full Conference Registration "Gold Pass" and Exhibit HallHere (Register ▸ Here via EventBrite)

Only Cloud Expo brings together all this in a single location:

  • Cloud Computing
  • Big Data & Analytics
  • Software-Defined Infrastructure
  • Industrial IoT
  • Industry 4.0
  • Artificial Intelligence
  • Cognitive Computing
  • Microservices
  • Machine Learning
  • DevOps
  • WebRTC
  • FinTech
  • Digital Transformation

Attend Cloud Expo. Build your own custom experience. Learn about the world's latest technologies and chart your course to Digital Transformation.

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.

Download Show Prospectus ▸ Here

Full Conference Registration "Gold Pass" and Exhibit HallHere (Register ▸ Here via EventBrite)

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. Meanwhile, 94% of enterprises are using some form of XaaS - software, platform, and infrastructure as a service.

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.

2018 Conference Agenda and Tracks, June 5-7, Javits Center

Track 1 | Cloud Expo - Enterprise Cloud
Track 2 | DXWorld Expo - Digital Transformation (DX)
Track 3 | The API Enterprise | Mobility & Security
Track 4 | DevOps | Containers & Microservices
Track 5 | Cognitive Computing | AI, ML, DL
Track 6 | Big Data | Analytics
Track 7 | IoT | IIoT | Smart Cities
Track 8 | Hot Topics | FinTech | WebRTC

Cloud Expo | DXWorldEXPO 2018 New York
(June 5-7, 2018, Javits Center, Manhattan)

Cloud Expo | DXWorldEXPO 2018 Silicon Valley
(November 6-8, 2018, Santa Clara Convention Center, CA)

Full Conference Registration "Gold Pass" and Exhibit HallHere (Register ▸ Here via EventBrite)

Download Show ProspectusHere

Every Global 2000 enterprise in the world is now integrating cloud computing in some form into its IT development and operations. Midsize and small businesses are also migrating to the cloud in increasing numbers.

Companies are each developing their unique mix of cloud technologies and services, forming multi-cloud and hybrid cloud architectures and deployments across all major industries. Cloud-driven thinking has become the norm in financial services, manufacturing, telco, healthcare, transportation, energy, media, entertainment, retail and other consumer industries, and the public sector.

Cloud Expo is the single show where technology buyers and vendors can meet to experience and discus cloud computing and all that it entails. Sponsors of Cloud Expo will benefit from unmatched branding, profile building and lead generation opportunities through:

  • Featured on-site presentation and ongoing on-demand webcast exposure to a captive audience of industry decision-makers.
  • Showcase exhibition during our new extended dedicated expo hours
  • Breakout Session Priority scheduling for Sponsors that have been guaranteed a 35-minute technical session
  • Online advertising in SYS-CON's i-Technology Publications
  • Capitalize on our Comprehensive Marketing efforts leading up to the show with print mailings, e-newsletters and extensive online media coverage.
  • Unprecedented PR Coverage: Editorial Coverage on Cloud Computing Journal.
  • Tweetup to over 75,000 plus followers
  • Press releases sent on major wire services to over 500 industry analysts.

For more information on sponsorship, exhibit, and keynote opportunities, contact Carmen Gonzalez by email at events (at) sys-con.com, or by phone 201 802-3021.

The World's Largest "Cloud Digital Transformation" Event

@CloudExpo | @ThingsExpo 2017 Silicon Valley
(Oct. 31 - Nov. 2, 2017, Santa Clara Convention Center, CA)

@CloudExpo | @ThingsExpo 2018 New York
(June 12-14, 2018, Javits Center, Manhattan)

Full Conference Registration "Gold Pass" and Exhibit HallHere (Register ▸ Here via EventBrite)

Sponsorship Opportunities

Sponsors of Cloud Expo | @ThingsExpo will benefit from unmatched branding, profile building and lead generation opportunities through:

  • Featured on-site presentation and ongoing on-demand webcast exposure to a captive audience of industry decision-makers
  • Showcase exhibition during our new extended dedicated expo hours
  • Breakout Session Priority scheduling for Sponsors that have been guaranteed a 35 minute technical session
  • Online targeted advertising in SYS-CON's i-Technology Publications
  • Capitalize on our Comprehensive Marketing efforts leading up to the show with print mailings, e-newsletters and extensive online media coverage
  • Unprecedented Marketing Coverage: Editorial Coverage on ITweetup to over 100,000 plus followers, press releases sent on major wire services to over 500 industry analysts

For more information on sponsorship, exhibit, and keynote opportunities, contact Carmen Gonzalez (@GonzalezCarmen) today by email at events (at) sys-con.com, or by phone 201 802-3021.

Secrets of Sponsors and ExhibitorsHere
Secrets of Cloud Expo SpeakersHere

All major researchers estimate there will be tens of billions devices - computers, smartphones, tablets, and sensors - connected to the Internet by 2020. This number will continue to grow at a rapid pace for the next several decades.

With major technology companies and startups seriously embracing Cloud strategies, now is the perfect time to attend @CloudExpo | @ThingsExpo, October 31 - November 2, 2017, at the Santa Clara Convention Center, CA, and June 12-4, 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.

Delegates to Cloud Expo | @ThingsExpo will be able to attend 8 simultaneous, information-packed education tracks.

There are over 120 breakout sessions in all, with Keynotes, General Sessions, and Power Panels adding to three days of incredibly rich presentations and content.

Join Cloud Expo | @ThingsExpo conference chair Roger Strukhoff (@IoT2040), October 31 - November 2, 2017, Santa Clara Convention Center, CA, and June 12-14, 2018, at the Javits Center in New York City, NY, for three days of intense Enterprise Cloud and 'Digital Transformation' discussion and focus, including Big Data's indispensable role in IoT, Smart Grids and (IIoT) Industrial Internet of Things, Wearables and Consumer IoT, as well as (new) Digital Transformation in Vertical Markets.

Full Conference Registration "Gold Pass" and Exhibit HallHere (Register ▸ Here via EventBrite)

Financial Technology - or FinTech - Is Now Part of the @CloudExpo Program!

Accordingly, attendees at the upcoming 21st Cloud Expo | @ThingsExpo October 31 - November 2, 2017, Santa Clara Convention Center, CA, and June 12-14, 2018, at the Javits Center in New York City, NY, will find fresh new content in a new track called FinTech, which will incorporate machine learning, artificial intelligence, deep learning, and blockchain into one track.

Financial enterprises in New York City, London, Singapore, and other world financial capitals are embracing a new generation of smart, automated FinTech that eliminates many cumbersome, slow, and expensive intermediate processes from their businesses.

FinTech brings efficiency as well as the ability to deliver new services and a much improved customer experience throughout the global financial services industry. FinTech is a natural fit with cloud computing, as new services are quickly developed, deployed, and scaled on public, private, and hybrid clouds.

More than US$20 billion in venture capital is being invested in FinTech this year. @CloudExpo is pleased to bring you the latest FinTech developments as an integral part of our program, starting at the 21st International Cloud Expo October 31 - November 2, 2017 in Silicon Valley, and June 12-14, 2018, in New York City.

@CloudExpo is accepting submissions for this new track, so please visit www.CloudComputingExpo.com for the latest information.

Speaking Opportunities

The upcoming 21st International @CloudExpo | @ThingsExpo, October 31 - November 2, 2017, Santa Clara Convention Center, CA, and June 12-14, 2018, at the Javits Center in New York City, NY announces that its Call For Papers for speaking opportunities is open.

Submit your speaking proposal today! ▸ Here

About @CloudEXPO and @DXWorldEXPO
SYS-CON Media (www.sys-con.com) has since 1994 been connecting technology companies and customers through a comprehensive content stream - featuring over forty focused subject areas, from Cloud Computing to Web Security - interwoven with market-leading full-scale conferences. The company's internationally recognized brands include among others Cloud Expo® (@CloudExpo), Big Data Expo® (@BigDataExpo), DevOps Summit (@DevOpsSummit), @ThingsExpo® (@ThingsExpo), and DXWorldEXPO® (@ExpoDX).

@CloudExpo® and @ThingsExpo® are registered trademarks of CLOUD EXPO INC.

DXWorldEXPO® is a registered trademark of DX WORLD EXPO LLC.

About 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

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