can any one tell me practical ex of stress & load testing

hi friend..

For better understanding just view this link Load testing - Wikipedia, the free encyclopedia
Stress testing - Wikipedia, the free encyclopedia

thanks
Deepasree

can one do load testing manually, i think yes it has been asked in my interview, can u tell me how

Hi,

Load Testing:

Testing carried out to measure the performance of the application for different load.(say 100 or 1000 or 1000 users)

Example: Testing a Car's speed with different number of passengers.

Stress Testing:

Testing carried out to measure the performance of the application under limited or restricted resources.

Example: Testing a Car's speed with different number of passengers with limited gear condition (say only 1st and 2nd Gear is enabled)

I think that i have given clarity on this.

Thanks

Gokulakrishnan K

hi,

One of the most common, but unfortunate misuse of terminology is treating "load testing" and "stress testing" as synonymous. The consequence of this ignorant semantic abuse is usually that the system is neither properly "load tested" nor subjected to a meaningful stresstest.

1. Stress testing is subjecting a system to an unreasonable load while denying it the resources (e.g., RAM, disc, mips, interrupts, etc.) needed to process that load. The idea is to stress a system to the breaking point in order to find bugs that will make that break potentially harmful. The system is not expected to process the overload without adequate resources, but to behave (e.g., fail) in a decent manner (e.g., not corrupting or losing data). Bugs and failure modes discovered under stress testing may or may not be repaired depending on the application, the failure mode, consequences, etc. The load (incoming transaction stream) in stress testing is often deliberately distorted so as to force the system into resource depletion.
2. Load testing is subjecting a system to a statistically epresentative (usually) load. The two main reasons for using such loads is in support of software reliability testing and in
performance testing. The term "load testing" by itself is too vague and imprecise to warrant use. For example, do you mean representative load," "overload," "high load," etc. In performance testing, load is varied from a minimum (zero) to the maximum level the system can sustain without running out of resources or having, transactions suffer (application-specific) excessive delay.

3. A third use of the term is as a test whose objective is to determine the maximum sustainable load the system can handle. In this usage, "load testing" is merely testing at the highest transaction arrival rate in performance testing.

Thanks
Sushma

hi friend..

Did you got an idea

Thanks
Deepasree

diff b\w gui and functionality can i have share your views

hi friend..

this query has been already discussed just refer this link Common - What is the difference between GUI Testing and Blackbox Testing?

Thanks
Deepasree

Stress testing : Stress testing provides your doctor with information about how your heart works during physical stress. Some heart problems are easier to diagnose when your heart is working hard and beating fast. During a stress test, you exercise (walk or run on a treadmill or pedal a bicycle) or are given a medicine to make your heart work harder while heart tests are performed.

Load testing : Load testing is the process of subjecting a computer, peripheral, server, network or application to a work level approaching the limits of its specifications. Load testing can be done under controlled lab conditions to compare the capabilities of different systems or to accurately measure the capabilities of a single system.