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Author: Chaitanya M Bhatt
After working in a virtualized performance test bed for a certain project, I observed that few professionals have conspicuously used incorrect testing process in this context and I would like to jot my words of wisdom out here on this topic.
When I discuss about virtualization of performance test bed with performance engineers, [...]

Most often it is not necessary to go about doing something specifically such as a network test per se. I would recommend engineers to perform their routine test cases on the AUT such as load test, stress test, endurance test etc. with client specified workload, but during the course of these tests pay attention to [...]

Author: Chaitanya M Bhatt
Email: chaitanya.bhatt@performancecompetence.com
When it comes to this analyzing and interpreting CPU metrics, there are many myths, wrong practices and misconceptions which prevail. In this post I would be touching upon a few critical issues and will try explaining the facts and best practices in detail.
A wrong practice
Fetching system wide CPU utilization of server [...]

Author: Chaitanya M Bhatt
Email: chaitanya.bhatt@gmail.com
Let us try looking at this issue from another perspective. If it were that training was a solitary solution to fixing this issue, then the industry would have never faced a problem called “deficit of skill/incompetency” which unarguably persists across not just a specific country but every geographical area [...]

Author: Chaitanya M Bhatt
Email: chaitanya.bhatt@performancecompetence.com
In my observation, persistently there has been a lack of awareness of the difference between “Simultaneously connected active users” and “Simultaneously connected passive users”. Commonly this problem is observed both from executive stakeholder side as well as the performance engineering/testing team side.
Impact of not understanding these concepts makes a lot of [...]

Author: Chaitanya M Bhatt
Many people say that process oriented work is the key for success. Even I strongly support that statement but I always wonder why people do not give prominence to those 7 basic quintessential points of performance test activity which can truly make or break a project.
When a resource is allocated to [...]

Author: Chaitanya M Bhatt
Email: chaitanya.bhatt@performancecompetence.com
One of my internet friend asked me a question“How do I calibrate the total number of Loadgenerators required to generate a load of 300 Virtual user if I have each loadgenerators equiped with 3Gb of RAM and 3.3GHz of cpu clock speed?”
My answer:
This is a highly debatable topic I must say. [...]

Why use WAN Emulation using WANem?
WANem is free software. Developed by TCS, published by Free Software Foundation. It can modify or redistributed on terms of GNU General Public License version 2.
Rigorous performance testing and optimization is a critical factor in the successful delivery of any business application. Yet frequently the performance of deployed applications doesn’t [...]

Author:Chaitanya Bhatt
Email:chaitanya.bhatt@performancecompetence.com
Recently a newbie to Loadrunner asked me the following question: “I have seen you somewhere in the loadrunner groups. I like to know if you
are aware of some sites where we can have a look at with different protocols
that uses.
For example, I like to see that the applications that uses different
protocol.
Web services
Oracle NCA ,
SAP [...]

Author: Chaitanya M Bhatt
Basically when programmers goes for .NET/VB/Java applet driven
development – most oftenly the application would not use open
standards like HTTP and hence loadrunner protocols would fail to
capture any of the messages sent through the application layer.
Developers would generally use custom messaging formats when they
develop an application using .NET/VB/Java applets, so this means when
the [...]