Monday Jul 27, 2009

Solaris DTrace, An Introduction

As a lead performance engineer with wide exposure to multiple applications in various industry domains, and working on Solaris10 platform for years. I believe, SolarisTM DTrace is one of the coolest innovations that could have ever happened in the Operating System world. DTrace was designed and implemented at Sun Microsystems by Bryan Cantrill, Adam Leventhal and Mike Shapiro.

DTrace is a comprehensive dynamic tracing framework created for troubleshooting kernel and application problems on production systems in real time. DTrace was developed for Solaris and released under the Common Development and Distribution License (CDDL). Other OS communities, after realizing the high potential and worthiness, have initiated projects to make DTrace available on respective operating systems.

DTrace can be used to get a global overview of a running system, such as the amount of memory, CPU time, filesystem and network resources used by the active processes. It can also provide much more fine-grained information, such as a log of the arguments with which a specific function is being called, or a list of the processes accessing a specific file. DTrace is Programmable, Flexible, Robust, Safe and Easy-to-Learn-and-Use. Possibilities are Endless !

My Presentation: SolarisTM DTrace-Simplified.pdf

Friday Nov 21, 2008

GlassFish V2 Clustering and Load Balancing - Simplified

Sun GlassFish V2 Enterprise Server is the first fully compliant Java EE 5  Application Server which is Enterprise-Ready, Production-Quality, High Performer available as open source and free for customer deployment. Its Subscription offers flexible and cost-efficient three software-support-levels to match customer needs, Standard, Premium, and Premium-Plus.

Sun Microsystems first announced the Project GlassFish in JavaOne 2005, as an initiative to open source its industry renowned commercial Application Server and the Java EE Reference Implementation. First release was in JavaOne 2006.

The key challenges among Enterprises or Next Generation web delivery companies is the growing user subscription base, requirement for scalability, high availability, a robust backbone, and most critically the cost-effectiveness. Deployment of GlassFish V2 with Sun SPARC Enterprise CoolThread Servers provides a robust infrastructure solution with advanced Application Server features and capabilities.

Presentation : GlassFish-V2-Clustering-Simplified.pdf

The presentation is a sincere effort to simplify the understanding of GlassFish V2 Clustering and Load Balancing concepts, architecture, implementation and deployment configurations. The technical content has been tested for accuracy and reliability on multiple platforms. The presentation provides both the perspectives, technical and business advantages in adopting GlassFish technology. 

Sun GlassFish Enterprise Server V2 can take real advantage of State-Of-The-Art CoolThread Server technology for high performance throughput computing and scalability.

It has set a world record, at the SPECjAppServer2004, as the fastest open source application server on Sun Fire T2000, delivering 883.66 JOPS@Standard, which is faster than Websphere 6.1 by 30%, and WebLogic by 10%.

Sun SPARC Enterprise T5440, the latest CoolThread Server is eco-efficient and provides the reliability of mid-range systems.

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