Thursday Jan 14, 2010

Olio 0.2 Released

Friday Oct 16, 2009

Olio 0.2 is coming

Olio0.2 is comming

Monday May 11, 2009

Olio implemented in Java

The first cut of a Java EE implementation of Olio is now checked into the repository. The file docs/java_setup.html gives instructions on how to build and setup this implementation. The implementation uses JSP, servlets, JPA for persistence, yahoo and Jmaki widgets for AJAX etc. The web application is located in webapp/java/trunk and the load driver, database and file loaders etc. are in workload/java/trunk.

Check it out.

Tuesday Apr 14, 2009

Scaling Olio on Sun's Nehalem Systems and Amber Road

I introduced Olio a little while ago as a toolkit to help web developers and deployers as well as performance/operations engineers. Olio includes a web2.0 application as well as the necessary software required to drive load against it. Today, we are showcasing the first major deployment of Olio on Sun's newest Intel Nehalem based systems - the SunFire X2270 and the SunFire X4270. We tested 10,000 concurrent users (with a database of 1 million users) using over 1TB of storage in the unstructured object store.

The diagram below shows the configuration we tested.

The Olio/PHP web application was deployed on two X2270 systems. Since these systems are wickedly fast, we also chose to run memcached on them. This eliminates the need of having a separate memcached tier. The structured data in Olio resides in MySQL. For this deployment, the database used MySQL Replication and was deployed using one Master node and 2 slave nodes - all nodes were X4270 systems. The databases were created on ZFS on the internal drives on these systems. The unstructured data resides on a regular filesystem created on the NAS Appliance AmberRoad - Sun Storage 7210.

I think this is a great solution for web2.0 applications - the new Nehalem servers are extremely powerful allowing you to run a lot of users on each server, resulting in a smaller footprint and easier deployment and maintenance. Of course, this requires a little more effort in terms of tuning the software stack to ensure it can scale and utilize the CPU effectively.

The entire configuration, tuning informantion and performance results is documented in details in a Sun Blueprints titled A Web2.0 Deployment on OpenSolaris and Sun Systems. So check it out and let me know if you have any questions or comments.

Friday Mar 20, 2009

First Olio Release

We have just released the first binary version of Apache Olio for both the PHP and Rails implementation. Both implementations have been tested quite thoroughly now and we think they are robust enough for serious use - especially for performance testing the workloads.

I introduced Olio in a previous post. It is a toolkit that includes a sample web2.0 application implemented in both PHP and Rails that includes a load generator to drive load against the application.

Please visit the Olio site and download the kits. If you find it interesting, I invite you to come join the project.

Wednesday Nov 12, 2008

Introducing Olio

For the last few months, I've been working feverishly to get the web2.0kit open-sourced. What is the web2.0kit, you ask ? We introduced this at our session at the Velocity conference. The web2.0kit is a reference architecture to help anyone running a web application evaluate the suitability, functionality and performance of various web technologies.

Most web2.0 sites today use open source languages and frameworks such as PHP, Ruby on Rails and Java EE to develop their applications. Deployments of these applications also use popular open source servers such as Apache httpd, MySQL, memcached and glassfish. Many other servers/technologies such as lighttpd, nginx, mogileFS, mongrel, thin, JRuby are also gaining popularity. To help understand the differences in these various web technology stacks and infrastructure applications, we developed the web2.0kit which has now been open-sourced and is an Apache Incubator project called Olio .

I view Olio as a tool to aid developers, deployers as well as performance engineers. For developers, Olio provides 3 different implementations of the exact same application using three different languages and their associated frameworks - PHP, Java EE and Rails. (At this time, the Java EE version is still not in the Olio repository but will soon be). Developers can browse the source code and understand how to design and code a complex web2.0 application. Even experienced PHP developers may gain by looking at the Olio PHP application as we've tried to design the application using object-oriented principles and well-known design patterns - typically not seen much in the PHP world ! In fact, a couple of fairly large companies in China are already using Olio as a training tool for their new hires/interns. If you've been considering rails but have been hesitant, here's your chance to check out a full-blown app and see what it will take to develop yours.

Developers can also experiment with different pieces of technology by modifying Olio. For example, Olio/PHP provides both ODBC and PDO interfaces to access the database. You can easily add a mysqli one if you want to test that. Similarly, you can test the various methods of caching that is possible in a rails application.

When it comes to deployment, there are a myriad hardware and software solutions to choose from. Should you choose apache or lighttpd ? And what about nginx ? You can use Olio to performance test various solutions and determine for yourself how these servers will behave in your installation; for unlike most test results you see out there where someone runs a toy test comparing apache and lighttpd using http_load or worse ab (see my blog post on the problems with these tools), Olio lets you test a real web2.0 like site with features that are common today including ajax, tags, comments, mashups etc.

We, in the Performance and Applications Engineering (PAE) group at Sun have decades of experience developing and tuning workloads. We have brought that experience to bear in developing Olio and we hope that you can benefit from it too.

Please see the instructions on the Olio website for downloading source code. To make it easier for users to get started, we have made available pre-built binary packages from the Sun Download Center.

Please join the Olio user list to get help with setting up Olio or to make any suggestions.


I'm a Senior Staff Engineer in the Performance & Applications Engineering Group (PAE). This blog focuses on tips to build, configure, tune and measure performance of popular open source web applications on Solaris.


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