The way how tests are presented in the tool, and the possibilities to edit tests and follow depending data using Data Correlation feature.
The Load Schedule has very nice preview, and the new Load Generator as the agent makes planing of testing environment capacity much simpler.
With each new version, the tool gets better and better features.
Improvements to My Organization
The handling of data correlations in the tool has helped us, and sped up our preparation of complex tests with a lot of security features, certificates, generally in enterprise environment. The tool supports Z/OS applications which is very important to our customers, as well.
Use of Solution
I've been using it for over 10 years.
Sometimes new versions have bugs.
With each version, it becomes more and more stable.
Customer Service and Technical Support
IBM has very good support in this area, and an accessible knowledge base, so over 90% of issues can be resolved using the web. If you need it, IBM support for the tool is very fast and useful.
It depends on the scope, complexity and expected load. After introducing Load Generator Agent, as I already mentioned, setting up environment and capacity planning became simpler.
We implemented in-house and for our customers, in our lab for performance testing on demand, and we offer consulting services for the tool throughout the world.
Pricing, Setup Cost and Licensing
IBM separately licenses tool and concurrent users (threads), but for this tool, IBM offers the renting of licenses over SaaS programs. Customers can rent licenses for a fixed time (minimum is one month) and use licenses during a projects duration. Licenses over SaaS are much cheaper and the customer gets IBM support.
Other Solutions Considered
We evaluate HP Load Runner and use JMeter. Generating of complex performance test with lot of data correlation was much faster and simpler using Rational Performance Tester. In the case of generating robotic performance testing, we still sometimes use JMeter. For LoadRunner, I would say it is a much more strategic decision when to use the tool.