Introduction

In software engineering, performance testing is testing that is
performed, from one perspective, to determine how fast
some aspect of a system performs under a particular
workload. It can also serve to validate and verify other quality
attributes of the system, such as scalability, reliability and
resource usage. Performance testing is a subset of
Performance engineering, an emerging computer science
practice which strives to build performance into the design
and architecture of a system, prior to the onset of actual
coding effort.

Introduction

Stress testing often refers to tests that put a greater

emphasis on robustness, availability, and error handling under a heavy

load, rather than on what would be considered correct behavior under

normal circumstances. In particular, the goals of such tests may be to

ensure the software doesn't crash in conditions of insufficient computational

resources (such as memory or disk space), unusually high concurrency, or

denial of service attacks.

Introduction

Load testing generally refers to the practice of modeling the expected

usage of a software program by simulating multiple users accessing

the program's services concurrently. As such, this testing is most

relevant for multi-user systems, often one built using a client/server

model, such as web servers. However, other types of software systems

can be load-tested also. For example, a word processor or graphics

editor can be forced to read an extremely large document; or a

financial package can be forced to generate a report based on several

years' worth of data. The most accurate load testing occurs with

actual, rather than theoretical, results.

Introduction

Exception handling is a programming language construct or computer
hardware mechanism designed to handle the occurrence of some
condition that changes the normal flow of execution. For signaling
conditions that are part of the normal flow of execution see the concepts
of signal and event handler.

Performance testing in general terms is testing that is performed, from one perspective, to determine how fast some aspect of a system performs under a particular workload. It can also serve to validate and verify other quality attributes of the system, such as scalability, reliability and resource usage. Performance testing is a subset of Performance Engineering, an emerging computer science practice that strives to build performance into the design and architecture of a system, prior to the onset of actual coding effort.

Very few individuals can differentiate between quality control and quality assurance. Most quality assurance groups, in fact, practice quality control. This section differentiates between the two, and describes how to recognize a control practice from an assurance practice.

Checklist for Website Testing

Worldwide web is browsed by customers with different knowledge levels, while testing websites (static/Dynamic) QA department should concentrate on various aspects to make effective presentation of website in www.

What Is Six Sigma?

Six Sigma is a methodology that aligns core business processes with customer and business requirements; systematically eliminates defects from existing processes, products, and services; or designs new processes, products, and services that reliably and consistently meet customer and business requirements. It essentially boils down to an approach for quantifying how well a business is meeting stakeholder expectations and then applying tactics for ensuring that those expectations are met virtually every time.