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Archive for February, 2011

Try Eclim

I have started using eclim as my Java, C and C++ development environment.

eclim is a project aimed for vim developers to incorporate the power of Eclipse into vim editor.

eclim provide host of features for java development that can be used from within your vim environment.
Some of them are

– Context sensitive code completion
– Code correction suggestions with option to apply a suggestion
– Java source and java doc searching capabilities.

Above features together with the most of the essential features one would expect from a java development environment make eclim a strong development environment for vim users.

The only catch is that you need to start a daemon called eclimd in order to use eclipse features from within vim. But that’s OK with me.

There is another way of using eclim as a vi editor from within Eclipose IDE. However I don’t like to play with Monsters like Eclipse.

My way of doing things is using the most familiar tool for me to get a job done. In that respect Unix pipe concept, which emphasize “use the best tool for the task at hand and if need to do more things plumb it with other tools. One tool do just the thing it is intended, nothing more, nothing less”.

See here for a set of eclim features. This getting started guide is the only document I followed to get my eclim environment running.

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In some of my previous blogs [1], [2], [3] I mentioned about some of the open source performance testing tools I have been using. Among them were httperf, Autobench, Apache Bench and Java Bench.

I used these tools heavily to performance test WSO2 open source products. While doing so I understood that the performance test tool, usually the load generator is not alone adequate to fulfill my performance test requirements. Load generation is only a part of my requirement. The bigger picture required a systematic approach to performance testing which, none of these tools alone could fulfill. So what are my requirements?

– Provide easy to use standard configuration system so that tests could be configured easily.

– A standard way to provide my input for the tests

– A standard way to collect output from my tests.

– Way to collect system statistics while running the tests

– Automate the whole process. Just provide input data, required configuration and run the test. That’s it. Then collect the results

– A standard way to organize tests and the results

Commercially avaiable performance testing tools provide some or all of these requirements but for a very high cost. The name of the framework I implemented with Eranda to fulfill above requirements, is Ravana. Ravana will be released during next couple of weeks licensed with GPL. Ravana will be released with helpful documentation that will get you familiar with Ravana immediately.

Using Ravana is simple. All your input, configuration, output for a particular test scenario will come  under one test scenario you define. You just need to define your input, configuration under that scenario and then run the test.

With Ravana you can use one of httperf, java bench or apache bench as the load generator. It also support a JMS load generator.

If you are too curious and need immediately try  Ravana, check it out from https://svn.wso2.org/repos/wso2/branches/commons/performance-tools/ravana2. The code in svn is pretty stable now.

[1] https://damithakumarage.wordpress.com/2009/03/15/benchmark-testing-with-httperf/

[2] https://damithakumarage.wordpress.com/2008/07/20/profiling-tools-that-i-used-to-profile-axis2c/

[3] https://damithakumarage.wordpress.com/2008/07/11/benchmark-testing-tools-for-web-services/

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