December 9, 2013

Performance Matters

By Matthew Heusser Hello; I am Matt Heusser, a risk management consultant and sometimes writer.  You can learn more about me at The folks at NRG Global have asked me to start blogging for them because their place in the community aligns with mine.  We are both […]
January 11, 2013

A Tale of Two Performance Projects

Imagine for a moment two companies have an identical problem – the website is slow.  Perhaps this is a huge problem; the company bet it’s future on a new product, that customers sign up for on the web, and performance is bad enough that people are abandoning the […]
December 29, 2012

The Black Swan In The Enterprise

Amazon’s Service level agreement for it’s cloud computer service is 99.95% uptime for a service region (that’s a data center) during a one year period. That means that the site will be down five one-hundredth’s of a percent of the time. That means that EC2 should be down […]
October 10, 2012

Understanding the difference between total users and concurrent users.

Many of our clients have enterprise applications that are accessed 24 hours a day, seven days a week.  Their applications may be accessed remotely from all over the world.  In such cases, total users could number in the thousands. When configuring a test plan for our clients we […]
March 8, 2011

Testing the Upgrade from Eclipsys 5.0 to Eclipsys 5.5:

If you are starting or thinking of starting your Eclipsys 5.5 upgrade, you are probably wondering what approach to take when testing the upgrade and what issues others have uncovered during testing. Eclipsys 5.5 features a suite of modules wrapped by a new gateway user interface to allow […]