In software engineering, performance testing is in general testing performed to determine

1. Software performance testing and its relevance

2.  In software engineering, performance testing is in
general testing performed to determine how a system performs in terms of
responsiveness and stability under a particular workload.
 It can also serve to investigate, measure, validate or verify
other quality attributes of the system, such as scalability, reliability and
resource usage. Software performance testing, a subset of performance
engineering, is a computer science practice which strives to build
performance into the implementation, design and architecture of a system.
 Load testing is the simplest form of performance testing. A load test is
usually conducted to understand the behavior of the system under a
specific expected load. This load can be the expected concurrent number
of users on the application performing a specific number
of transactions within the set duration.
 This test will give out the response times of all the important business
critical transactions. If the database, application server, etc. are also
monitored, then this simple test can itself point towards bottlenecks in the
application software. Software performance testing has many other types
like this one.

4.  The first set of performance metrics defines the performance experienced
by end users of the application. One example of performance is average
response times under peak load. The load is the volume of transactions
processed by the application, e.g., transactions per second (tps),
requests per second, and pages per second. Without being loaded by
computer-based demands for searches, calculations, transmissions, etc.,
most applications are fast enough, which is why programmers may not
catch performance problems during development. The response times
are the times required for an application to respond to a user's actions at
such a load. Application performance management is hence the
translation of IT metrics into business meaning.
 With the growing number of industries depending increasingly on
software driven operations the demand for Software Testers is surging
every day. Mumbai, one of the leading cities of India, otherwise known as
the commercial capital of the country for being home to one of the biggest
entertainment industries in the world, also has a strong presence in the
IT, ITES and Software Industry. No doubt, the demand for software
testers is high there as well. There are many software testing
companies in Mumbai that offer all these services.