what is the defference between stress and load testing?

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what is the defference between stress and load testing?..

Answer / amarjeet

First of all, both testing are used for testing the
performance of the application.More generally we can say
that these are the techniques to perform PERFORMANCE
TESTING.
In the LOAD testing we check the application for the volume
of users at the peak level. For example say a application
can afford 500 users at the peak time and this time remains
for 5 hrs.then we'll test the application with 500 virtual
users for 5 hrs. Keep it remember that the this is
performed in steps i.e. firt we test the application for
5,10,50,100,....,500 virtual users. And in this way we test
the application for specified number of users.
In the STRESS Testing we test the application for beyond
the specified limit(number of users). And check what the
degradations take place before going to fail,how the system
starts behaving????
LOAD and STRESS testing are almost two synonymous term.
The only difference is that in Load Testing we test for the
SPECIFIED LIMIT and in Stress Testing for BEYOND THE LIMIT.

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what is the defference between stress and load testing?..

Answer / suresh.chaluvadi

I think some of users confused with some terminology used
in industry ?

I) Load test and stress test? Both are same???
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 stress test.

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
representative (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

Suresh.Chaluvadi

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what is the defference between stress and load testing?..

Answer / satyaprasad

Load testing is also called as "scalability testing".scale
means number of cucurrent users.to test the application
build with maximum customer expected load is called load
testing
testing the application with more than customer expected
load is called stress testing .In general many companies
test with customer expected load+5% of the customer
expected load

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what is the defference between stress and load testing?..

Answer / ragini

I agree with suresh.

Stress testing is subjecting a system to an unreasonable
load while denying it the resources needed to process that
load.

Load testing is subjecting a system to an usual load
without running out of resources.

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what is the defference between stress and load testing?..

Answer / friendswellwisher

To test how much load is applied on Server/CPU and response
time of server for different configuration of load is known
as Performance testing. For conducting performance testing,
we use three techniques:

1.LOAD TEST --> Estimating the performance of Server/CPU
under customer expected load is called Load Test.

2.STRESS TEST --> Estimating the performance of Server/CPU
under maximum load or peak load is called Stress Test.

3.VOLUME TEST --> Estimating the response time of Server/CPU
applying more than maximum load or peak load is called
volume test.

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