 isuru-perera.blogspot.com
                                            isuru-perera.blogspot.com
                                        
                                        Isuru's Blog: Java CPU Flame Graphs
                                        http://isuru-perera.blogspot.com/2015/07/java-cpu-flame-graphs.html
                                        Isuru's Blog on Java, Performance, Life etc! Wednesday, July 22, 2015. Java CPU Flame Graphs. Update (September 14, 2015):. Java 8 Update 60 was released on August 18, 2015. There are some recent changes to "perf-map-agent". There is no longer a script named "perf-java" and you should use "bin/create-java-perf-map.sh. Shared an exciting news in his Monitorama. Talk: The " JDK-8068945. Is fixed in Java 8 Update 60 Build 19. The Problem with Java and Perf. Missing these Java symbols is one of the main prob...
                                     
                                    
                                        
                                             isuru-perera.blogspot.com
                                            isuru-perera.blogspot.com
                                        
                                        Isuru's Blog: Installing Oracle JDK 7 (Java Development Kit) on Ubuntu
                                        http://isuru-perera.blogspot.com/2014/01/installing-jdk7-on-ubuntu.html
                                        Isuru's Blog on Java, Performance, Life etc! Thursday, January 16, 2014. Installing Oracle JDK 7 (Java Development Kit) on Ubuntu. There are many posts on this topic if you search on Google. This post just explains the steps I use to install JDK 7 on my laptop. From Oracle. The latest version as of now is Java SE 7u51. I'm on 64-bit machine, therefore I downloaded jdk-7u51-linux-x64 .tar.gz. It's easy to get the tar.gz package as we just have to extract the JDK. Sudo mkdir -p /usr/lib/jvm cd /usr/lib/jvm...
                                     
                                    
                                        
                                             isuru-perera.blogspot.com
                                            isuru-perera.blogspot.com
                                        
                                        Isuru's Blog: January 2015
                                        http://isuru-perera.blogspot.com/2015_01_01_archive.html
                                        Isuru's Blog on Java, Performance, Life etc! Tuesday, January 27, 2015. Java Mission Control and Java Flight Recorder. Last year, I got two opportunities to talk about Java Mission Control and Java Flight Recorder. I first talked about " Using Java Mission Control and Java Flight Recorder. As an internal tech talk at WSO2. I must thank Srinath. For giving me that opportunity. After that, Prabath. Also invited me to do a talk at Java Colombo Meetup. I'm also very excited to see that Marcus Hirt. Print a s...
                                     
                                    
                                        
                                             isuru-perera.blogspot.com
                                            isuru-perera.blogspot.com
                                        
                                        Isuru's Blog: "Subversion Native Library Not Available" Error on Eclipse (with Subclipse) Ubuntu
                                        http://isuru-perera.blogspot.com/2014/02/subversion-native-library-not-available.html
                                        Isuru's Blog on Java, Performance, Life etc! Thursday, February 27, 2014. Subversion Native Library Not Available" Error on Eclipse (with Subclipse) Ubuntu. Do you use Eclipse. Do you encounter following error:. Subversion Native Library Not Available". Now if you go to Eclipse - Preferences - Team - SVN, you will see that "JavaHL (JNI) is Not Available" for SVN interface. The solution is to install JavaHL. Sudo apt-get install libsvn-java sudo ln -s /usr/lib/x86 64-linux-gnu/jni/* /usr/lib/. Nevindaree ...
                                     
                                    
                                        
                                             isuru-perera.blogspot.com
                                            isuru-perera.blogspot.com
                                        
                                        Isuru's Blog: July 2015
                                        http://isuru-perera.blogspot.com/2015_07_01_archive.html
                                        Isuru's Blog on Java, Performance, Life etc! Wednesday, July 22, 2015. Java CPU Flame Graphs. Update (September 14, 2015):. Java 8 Update 60 was released on August 18, 2015. There are some recent changes to "perf-map-agent". There is no longer a script named "perf-java" and you should use "bin/create-java-perf-map.sh. Shared an exciting news in his Monitorama. Talk: The " JDK-8068945. Is fixed in Java 8 Update 60 Build 19. The Problem with Java and Perf. Missing these Java symbols is one of the main prob...
                                     
                                    
                                        
                                             isuru-perera.blogspot.com
                                            isuru-perera.blogspot.com
                                        
                                        Isuru's Blog: Installing NS-2 on Ubuntu
                                        http://isuru-perera.blogspot.com/2013/05/installing-ns-2-on-ubuntu.html
                                        Isuru's Blog on Java, Performance, Life etc! Saturday, May 4, 2013. Installing NS-2 on Ubuntu. In this year I started following the Master of Computer Science ( MCS. At University of Colombo School of Computing and these days I'm following a module named "Advanced Concepts in Data Communication Networks". The lecturer asked us to install a program called NS-2 and to play around with it as we will get an assignment on it soon! As usual when I hear a new name, I just googled. Installing NS-2 - The Hard Way! 
                                     
                                    
                                        
                                             isuru-perera.blogspot.com
                                            isuru-perera.blogspot.com
                                        
                                        Isuru's Blog: June 2015
                                        http://isuru-perera.blogspot.com/2015_06_01_archive.html
                                        Isuru's Blog on Java, Performance, Life etc! Friday, June 5, 2015. In this blog post, I'm briefly introducing important concepts in Java Garbage Collection (GC) and how to do GC Logging. There are many resources available online for Java GC and I'm linking some of those in this post. Why Garbage Collection is important? This memory management is a part of "Automatic Garbage Collection", which is an important feature in Java. It is important to know how Garbage Collection manages memory in our programs. 
                                     
                                    
                                        
                                             isuru-perera.blogspot.com
                                            isuru-perera.blogspot.com
                                        
                                        Isuru's Blog: June 2014
                                        http://isuru-perera.blogspot.com/2014_06_01_archive.html
                                        Isuru's Blog on Java, Performance, Life etc! Tuesday, June 3, 2014. Monitoring WSO2 products with logstash JMX input plugin. These days, I got the chance to play with ELK. These tools are a great way to analyze and visualize all logs. You can easily analyze all wso2carbon.log files from ELK. However we also needed to use ELK for monitoring WSO2 products and this post explains the essential steps to use logstash JMX input plugin to monitor WSO2 servers. Installing Logstash JMX input plugin. This is all we...
                                     
                                    
                                        
                                             isuru-perera.blogspot.com
                                            isuru-perera.blogspot.com
                                        
                                        Isuru's Blog: February 2014
                                        http://isuru-perera.blogspot.com/2014_02_01_archive.html
                                        Isuru's Blog on Java, Performance, Life etc! Thursday, February 27, 2014. Subversion Native Library Not Available" Error on Eclipse (with Subclipse) Ubuntu. Do you use Eclipse. Do you encounter following error:. Subversion Native Library Not Available". Now if you go to Eclipse - Preferences - Team - SVN, you will see that "JavaHL (JNI) is Not Available" for SVN interface. The solution is to install JavaHL. Sudo apt-get install libsvn-java sudo ln -s /usr/lib/x86 64-linux-gnu/jni/* /usr/lib/. Nevindaree ...
                                     
                         
                            
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