Home » Tag Archives: JVM (page 3)

Tag Archives: JVM

Testing JVM server-side JavaScript with Jasmine, Spock and Nashorn

java-logo

JavaScript usage is not limited to client-side code in browser or NodeJS powered server-side code. Many JVM based projects are using it as internal scripting language. Testing this sort of functionality is neither straightforward nor standard. In this post I intend to demonstrate an approach for testing JavaScript in server-side JVM environment using mature tools like Jasmine, Spock and Nashorn. ...

Read More »

cjmx: A command-line version of JConsole

java-logo

JConsole is a nice tool when it comes to monitoring a running Java application. But when it is not possible to connect to a JVM with JConsole directly (due to network restrictions for example) and SSH tunneling is not possible, then it would be great to have a command line version of JConsole. jcmx is such a command line version ...

Read More »

On heap vs off heap memory usage

java-logo

Overview I was recently asked about the benefits and wisdom of using off heap memory in Java. The answers may be of interest to others facing the same choices. Off heap memory is nothing special. The thread stacks, application code, NIO buffers are all off heap.  In fact in C and C++, you only have unmanaged memory as it does not have ...

Read More »

Self-healing JVM

java-logo

This post is an example about an application where the first solution to each and every IT problem – “have you tried turning it off and on again” – can backfire and do more harm than good. Instead of turning things off and on, we have an application that can literally heal itself: it fails at the beginning, but starts ...

Read More »

Java performance tuning survey results (part IV)

java-logo

This is the last post in series where we analyze the results of the Java Performance Tuning Survey we conducted in October 2014. If you have not read the first posts, I recommend to go through the following first:                 Frequency and severity of performance problems Most popular monitoring solutions Tools and techniques ...

Read More »

Java performance tuning survey results (part III)

java-logo

This is the third post in a series where we analyze the results of a survey conducted in October 2014. If you have not already done so, I recommend to start with the first two posts in the series: problem severity analysis and monitoring domain analysis. This post focuses on troubleshooting / root cause detection. The background to this survey ...

Read More »

Java performance tuning survey results (part II)

java-logo

This is a second post in series where we analyze the results of the performance tuning survey conducted in October 2014. If you have not read the first part yet, we recommend to start here. Second part will focus on monitoring Java applications for performance issues. In particular, we try to answer the following questions:           ...

Read More »

Java performance tuning survey results (part I)

java-logo

We conducted a Java performance tuning survey during October 2014. The main goal of the survey was to gathering insight into Java performance world to improve the Plumbr product offering. However, we are happy to share the interesting results with you as well. The data that we collected provided material for a lengthy analysis, so we decided to divide the results ...

Read More »
Do you want to know how to develop your skillset and become a ...

Subscribe to our newsletter to start Rocking right now!

To get you started we give you our best selling eBooks for FREE!
Get ready to Rock!
To download the books, please verify your email address by following the instructions found on the email we just sent you.

THANK YOU!

Close