Skip to main content

Still looking for a Java profiler?

This post is just a short overview on the topic.

Recently I've had to investigate a performance issue of a Java application running under JBoss server. This problem resulted in using a full-featured free Java profiling tool - VisualVM that is available separately and as an embedded JDK tool starting from JDK 6 update 7. Thus, it's most likely already installed on your system. This solution was great in localizing the performance bottleneck on the Production environment in my case. The list of features include monitoring CPU and memory usage, application threads, profiling, sampling, taking thread and heap dumps, etc. I advise to watch the video tutorial on the Getting Started page. Here is my screenshot:
I'm not going to make a thorough comparison of different Java profiler tools here but this is a list of alternatives for completeness:
  • YourKit is free for open-source projects;
  • JProfiler is free for open-source projects;
  • NetBeans profiler is embedded into corresponding IDE and is completely free;
  • Also you should not forget about the embedded JVM features (e.g. threaddumps, java agents, bytecode manipulation) that can be extremely useful especially when you cannot apply a third-party profiler (e.g. critical high-loaded Production systems). Here is a Russian article on this topic that I've translated to English here.
Labels:

Comments

  1. UnknownSeptember 17, 2013 at 7:18 AM

    This comment has been removed by a blog administrator.

    ReplyDelete

Post a Comment

Popular posts from this blog

Connection to Amazon Neptune endpoint from EKS during development

This small article will describe how to connect to Amazon Neptune database endpoint from your PC during development. Amazon Neptune is a fully managed graph database service from Amazon. Due to security reasons direct connections to Neptune are not allowed, so it's impossible to attach a public IP address or load balancer to that service. Instead access is restricted to the same VPC where Neptune is set up, so applications should be deployed in the same VPC to be able to access the database. That's a great idea for Production however it makes it very difficult to develop, debug and test applications locally. The instructions below will help you to create a tunnel towards Neptune endpoint considering you use Amazon EKS - a managed Kubernetes service from Amazon. As a side note, if you don't use EKS, the same idea of creating a tunnel can be implemented using a Bastion server . In Kubernetes we'll create a dedicated proxying pod. Prerequisites. Setting up a tunnel. ...
Post a Comment
Read more

Notes on upgrade to JSF 2.1, Servlet 3.0, Spring 4.0, RichFaces 4.3

This article is devoted to an upgrade of a common JSF Spring application. Time flies and there is already Java EE 7 platform out and widely used. It's sometimes said that Spring framework has become legacy with appearance of Java EE 6. But it's out of scope of this post. Here I'm going to provide notes about the minimal changes that I found required for the upgrade of the application from JSF 1.2 to 2.1, from JSTL 1.1.2 to 1.2, from Servlet 2.4 to 3.0, from Spring 3.1.3 to 4.0.5, from RichFaces 3.3.3 to 4.3.7. It must be mentioned that the latest final RichFaces release 4.3.7 depends on JSF 2.1, JSTL 1.2 and Servlet 3.0.1 that dictated those versions. This post should not be considered as comprehensive but rather showing how I did the upgrade. See the links for more details. Jetty & Tomcat. JSTL. JSF & Facelets. Servlet. Spring framework. RichFaces. Jetty & Tomcat First, I upgraded the application to run with the latest servlet container versio...
1 comment
Read more

Managing Content Security Policy (CSP) in IBM MAS Manage

This article explores a new system property introduced in IBM MAS 8.11.0 and Manage 8.7.0+ that enhances security but can inadvertently break Google Maps functionality within Manage. We'll delve into the root cause, provide a step-by-step solution, and offer best practices for managing Content Security Policy (CSP) effectively. Understanding the issue IBM MAS 8.11.0 and Manage 8.7.0 introduced the mxe.sec.header.Content_Security_Policy   property, implementing CSP to safeguard against injection attacks. While beneficial, its default configuration restricts external resources, causing Google Maps and fonts to malfunction. CSP dictates which domains can serve various content types (scripts, images, fonts) to a web page. The default value in this property blocks Google-related domains by default. Original value font-src 'self' data: https://1.www.s81c.com *.walkme.com; script-src 'self' 'unsafe-inline' 'unsafe-eval' ...
Post a Comment
Read more