Stress Testing: An Overview

Stress testing has a different meaning for different industries where it is used. For financial sector and the sector stress testing, a testing process of financial instruments to determine their robustness and accuracy level that can sustain under extreme conditions such as sudden market decline continued or at a certain level, sudden or extreme change on various parameters, for example, interest rates, repurchase agreements and time used in the financial sector, the sudden rise or fall in price of substances that may affect financial forecasts, etc. for manufacturing, testing effort can include different operating parameters and processes for the testing of different systems. For the medical industry, stress testing, a process that can help understand the condition of the patient, etc.

Stress tests in the IT industry

Stress tests in the IT sector (hardware and software sectors) means of testing software / hardware for its effectiveness to provide a consistent and satisfactory performance in extreme environments and stresses such as heavy network traffic, loading procedures, below or above the underlying hardware clock, working on applications for the maximum utilization of the resources of the periphery or in the system, etc.

In other words, stress testing helps find the level of robustness and consistency of performance as satisfactory or even crossed the limits for convention procedure of the system (software / hardware).

The most important use of stress testing is in testing software and hardware that are supposed to work at critical or real situation. As a website is always online and the server hosting the website must be able to handle the traffic in every potential way (even if traffic increases the variety), a mission-critical software or hardware that works on stage in real time, etc stress testing in relation to certain websites or software is considered an effective process to determine the limit, in which the system / / software hardware / website shows strength, is always available to perform its task, effectively manages the load that the normal scenario, and even shows effective error handling in extreme conditions. Need for exercise testing

Stress testing is considered important for the following reasons:

1. Almost 90% of software / systems are developed with the assumption that they will operate in the normal scenario. And even if one considers that the limit of the normal operating conditions met, not much higher than might actually be.

2. The cost or the effect of a very important (critical) software / system / website failure in extreme conditions in real time can be huge (or can be catastrophic for the organization or entity that owns the software / system).

3. It is always best to be prepared for extreme conditions instead of letting the system / / software crash site, when it crosses the boundary of normal operation.

4. Tests conducted by the system developer / software / website may not be enough to help illuminate the conditions that lead to system crash or software when it is actually presented with the operating environment.

5. It is not always possible to make any problems or errors in a system or software, unless it is subjected to such tests.

To help overcome problems such as denial of service attacks, in the case of Web servers in a Web site, violation of safety due to problems with spam, hackers and viruses, etc., the problems arising from the conditions where / system software or website needs to process applications for resource allocation processes of interest at the time when all the necessary resources are already committed to some other process that needs more resources to complete its work (known as deadlock), memory loss, race condition, etc.

This type of testing is done mainly with the help of stress testing different programs available on the market. These tools are configured to automate a process of increasing tension (ie, the creation and increasing degree of adverse environment) in a system / software / website and capture the values of various parameters that help confirm the robustness, availability and performance of the system / software / web is being tested. Few of the actions involved in the stress test are bombarding a website with a large number of applications, the management of many sources of applications on a computer, making numerous attempts to access ports of a computer to hack it and used for various purposes, such as spam spread of viruses, etc.