Answer / rudraneel

What is performance testing?
Performance testing gives us a chance to estimate the
performance of the application under test.
Performance testing gives us a chance to find out the
application health in terms of its behavior for high
loads/different load levels/ peak loads etc.

Performance Testing objects:
1. vusers :- test the performance of an application with
excepted vuser roll.
2. Response time :- identify the response time of each and
every transaction.
3. utilizations :- define the acceptable criteria of the
server measurements.
A) processor B) memory C) disk

Performance Testing Types:
Load Testing :- gradually ramp up the Vusers to test the
application scalability from lower level to higher lever.

Stress testing :- apply all the user roll to perform the
same functionality at a time.
Endurance testing :- estimate the scalability or stability
of application with long duration running.

Benchmark testing :- test the performance of application
with same load with different configuration.

Performance Measurements:
At the time of performance scenario execution you need to
measure the performance measurements.

1. client side measurements.
2. server side measurements.

Client side Measurements:
1. No of Vusers:- it indicates the no of users should
support by the application simultaneously

2. Transaction Response time:- the amount of time taken by
the server to process the user actions

3.Transaction per second :- the amount of transaction gone
through the server per second.
4. Hits per second :- the amount of request made by the
client to the web server per second.
5. Throughput:- the amount data receive from the web server

Server side Measurements:
1. server side system resources.
a) processor.
b) memory
c) disk
d) server


Server side Measurements:
2. server side application resources.
a) JMS – bytes pending count
bytes received count
b) JVM – heap free ( available )
heap size ( allocated )
c) JTA – transaction committed total count
transaction total count


Performance Tuning:
Performance tuning means changing the system
configurations, change in some settings, change in the
application etc…., to improve the performance of the
application.

Identify the exact location of the productional
bottleneck, you can use performance tuning

Performance Tuning:
1. code level tuning – Developer
2. data base tuning – DBA
3. network level tuning – network administrator
4. system level tuning – system administrator

Performance Testing Process:
Plan test

Identification of the business scenarios

Work load ( Amount of users)

Generating & enhancing the script

Running & monitoring the multi user business scenarios

Analyze & reporting the records

Sing off

.Why do you go for Test Bed?

3 Answers  

---

Can you explian $ pillar of Agile

0 Answers   HP,

---

what the document used is in a V-model in each phase?

2 Answers  

---

diff between priorty and severiorty?

7 Answers  

---

if google wants to introduce the third button along with "search" and "iam feeling lucky",what u will propose and how will u test it?

5 Answers   Accenture,

---

Why must we use Tester to test software instead of BA, Developer?

2 Answers  

---

Before starting to write a script, how will you find the test cases that have the same functionality? And how will you maintain the code?

0 Answers  

---

what will you do when you were given two diffrent projects and asked to complete them at same time?

2 Answers   MTN,

---

Give me sample test cases for smoke testing

0 Answers  

---

explain v- model? why we call this model as v-model, not an u-model?

2 Answers  

---

What is mean by testing Methodology?

10 Answers   BlueShift Technology,

---

In our project, we use Withdrawal Indent, we are confused to use heading as "Withdrawal Indent" or "Withdraw Indent". Please suggest me which one to use ASAP, Thanks in advance

0 Answers  

---