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'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'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's Blog: January 2014
http://isuru-perera.blogspot.com/2014_01_01_archive.html
Isuru's Blog on Java, Performance, Life etc! Friday, January 24, 2014. Why you should attend WSO2Con Asia 2014. A must attend conference for anyone interested in WSO2 products, is just around the corner. The WSO2Con Asia 2014 is scheduled from March 24 to March 26 with two conference days and one pre-conference tutorial day. Have a look at WSO2Con Asia 2014 Agenda. For all interesting talks and tutorials WSO2 has to offer. The conference will be held at Waters Edge. Have fun at the WSO2Con! In this blog ...
isuru-perera.blogspot.com
Isuru's Blog: Installing Multi-Node OpenStack Folsom with DevStack
http://isuru-perera.blogspot.com/2013/04/openstack-multi-node-devstack.html
Isuru's Blog on Java, Performance, Life etc! Friday, April 26, 2013. Installing Multi-Node OpenStack Folsom with DevStack. These days we are preparing to release WSO2 Stratos 2.0 PaaS Foundation and we needed to install OpenStack in multiple nodes in our lab environment. In this guide I'm going to explain how to install OpenStack Folsom using the DevStack. Script [1] and also how to install additional Compute Nodes. Earlier we used Damitha's guide. 4] from DevStack failed. When we run DevStack script...
isuru-perera.blogspot.com
Isuru's Blog: November 2014
http://isuru-perera.blogspot.com/2014_11_01_archive.html
Isuru's Blog on Java, Performance, Life etc! Thursday, November 13, 2014. Java Performance Monitoring Libraries. There is a proposal to build performance probes in WSO2 Platform. For that I started looking in to some performance monitoring libraries. Following libraries were mentioned in the WSO2 architecture thread. While looking in to these libraries, I found out about following also. Apache License 2.0. Apache License 2.0. Apache License 2.0. Sep 4, 2014. Jun 01, 2011. Aug 20, 2014. Oct 29, 2014.
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's Blog: February 2015
http://isuru-perera.blogspot.com/2015_02_01_archive.html
Isuru's Blog on Java, Performance, Life etc! Friday, February 27, 2015. Java Flight Recorder Continuous Recordings. When we are trying to find performance issues, it is sometimes necessary to do continuous recordings with Java Flight Recorder. Usually we debug issues in an environment similar to a production setup. That means we don't have a desktop environment and we cannot use Java Mission Control for flight recording. Get a dump manually from JFR.dump diagnostic command via " jcmd. XX: UnlockCommercia...
isuru-perera.blogspot.com
Isuru's Blog: Linux Performance Observability Tools
http://isuru-perera.blogspot.com/2015/08/linux-performance-observability-tools.html
Isuru's Blog on Java, Performance, Life etc! Monday, August 10, 2015. Linux Performance Observability Tools. I am learning about Linux Performance Tools and I found Brendan Gregg. S talks on Linux Performance. There are so many performance tools for Linux. Brendan recommends to follow a performance analysis methodology. To analyze system or application performance. These methodologies can guide us to choose and use these performance tools effectively. Linux Performance Observability Tools. Show stats in ...
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...