Factors Governing the Performance Testing

Before learning more about performance testing, it is interesting to know the factors governing performance testing.

in Summary I am listing out here the factors governing PT(here onwards, PT: Performance Testing):

1.Throughput
2.Response Time
3.Availability
4.Capacity Planning
5.Competitive analysis and Benchmarking of our product
Readers, we welcome your comments on this, to add more value to our posts.

1.Throughput:

As we discussed earlier, a product is expected to handle multiple transactions in a given period.

The capability of the System in handling the multiple transactions is determined by a factor called throughput.

It represents, Number of requests /Business transactions processed by the product in a specified time duration.

Please understand that throughput varies in accordance with the load n the system/Product(I am using system and product interchangeably)

For example,in below figure, we can observe that the throughput increases as the load on the system increases till certain point reaches. that means, the system is capable of handling the requests made by users and can deliver effectively with in the time limits.

Introduction to Performance Testing

Let us start learning performance testing from the beginning.

Before starting , let us see the need of performance testing for internet business.

In summary, When an application or product can fulfill the requirements quickly and put in to a position to expand its business.

or in other words, a System that is not able to service business transactions due to slow performance is a big loss to organization.,its customers and any other related person to that organization.

Hence, Performance is a basic requirement for any product or system which is catching up rapidly in software testing community.

in Single sentence: Performance testing concentrates on the capability of the system in handling the multiple transactions in a particular time apart from other factors.

In next post, let us see the Factors governing the Performance Testing .

(Source : Software Testing : Principles and Practices By Srinivasan Desikan and Gopalakrishnan Ramesh)

Basic Laws to Influencing Performance Testing

Today I want to discuss some basic and useful laws that govern performance testing.

Before learning laws, let's see the objectives behind these laws:

Objective 1 : Introducing Basic quantities and notations of interest
Objective 2 : Deriving relationships between all these quantities
Objective 3 : Exploring Little's Law

Objective 1 :

By observing the System below and considering the terms as follows :

T: Length of time we observed the system