hi ,
i understodd what is volume and stress test. can u explain
what is the rresult of stress testing .i.e always pass or fail;

load test means to test the application with maximum 
customer expected load
volume testing means test the build with customer expected 
load in lesstime
stress means test the build with more than the customer 
expected load(generally customer expected load+5%),so the 
advantage of stress test is to ensure that application can 
be easily run on the customer expected load

load testing means testing the application with increasing 
load upto the limit.
e.g: consider limit is 1000 users can login at a time, we 
check 1001 users to login at a time.

Stress testing means testing the application with 
increasing load beyond the limit.
e.g: consider limit is 1000 users can login at a time, we 
check with 1001 users to login at a time.
  
Volume testing:testing the application with large amt of 
data with a short time period.

volume testing - test/measure the "volume" (typically 
maximum # of transactions) a system, component or module 
can handle. 

stress testing - test/mesaure the system while under 
stress. The stress can come from an outside source. For 
example, if you have a 7/24 application, how does it 
perform when there is a hot-backup or virus can in play on 
the same box?  Stress testing can also involved testing the 
system under significant load.

Load testing - is a technique - in that you load test an 
application to perform stress testing and/or volume 
testing. Most automated tools will provide system load - 
and as a tester you need to design the test to categorize 
if you're trying to volume test a specific component or 
scenario; or provide external stress (user load) to the 
system.

In Load Testing we r applying load for a particular
limit.Here we hav to test whether application will take
specified load or not.
In Volume Testing where the system is subjected to large
volumes of data.

In Stress Testing we hav to check at what point or at what
load the application will crash.


Pramod
pramod_login@yahoo.com
9845454652

Load testing:: Evaluate the response time we get at max 
load.

Stress testing: Apply user load beyond the limit.System 
will crash at one point of time.. We shd know how it is 
crashing(ie) decently or not. Decently means before 
crashing it should take backup and tell it s gonna crash now

volume testing: To evaluate the testponse time of DB Server