Performance tuning and optimization (ppt)

• Performance of client/server can be improved in many ways.
This section of client performance mainly focuses on the
attributes that we can examine in order to improve the
performance of client machine.
 They can be maintainability, dependability ,efficient, usability.
• It mainly includes two types of performance. They are :
*Hardware performance
*Software performance
2

the performance of client is to certain
extent dictated by a particular hardware
within the client. Client performance can
be improved by improving any of the
subsystems.
Note::When purchasing a client machine
the best way is to purchase the fastest,
most reliable, accurate, machine
available .And it also should have the
properties of safety and security.
3

the software of the client workstation can
be broken down into two performance
reasons:-
 Operating system
 Application
4

 The capability to be simultaneously
involved in multiple process is an essential
for client/server system.
 Independent tasks can be activated to
manage communication processes.
 Multiple personal productivity application
such as word processor, spreadsheets and
presentation graphics can be active.
 Most multitasking operating system today
are thirty two bits
5

The client application is normally used
where largest improvements can be
made.
Performance of client level is very
difficult to judge because each user
perception of response is different.
 The best way of determining problem
areas is to ask users what areas of
application they consider now.
6

This section focus on performance gains
and improvements you can make at the
server
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 Upgrading server hardware just like
upgrading client hardware can improve the
performance of the client/server
 Using multiple network interface cards
within a server can also improve
performance by moving the network loads
 Within file server and PC-based database
server high- performance file system using
technology such as SCSI-2 and RAID offer
dramatic performance improvements over
older ISA and EISA driver technology
8

Data base and communication
processing should be offloaded to a
server processor

.Several servers can be used together so
that performance of the individual
components can be improved
9

Performance tuning is the improvement
of system performance.Typically a
computer system.The system ability to
accept higher load is called scability and
modifying a system to handle a higher
load is synonymous of performance
tuning
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Assess the problem and establish
numeric value that categorize acceptable
behavior
Measure the performance of the system
before modification
 Identify the part of the system that is
critical for improving the performance
called bottleneck.
Modify the part of the system to remove
the bottleneck
11

Measure the performance of the system
after modification
If the performance make better than
adopt otherwise put it the back it was.
12

Performance optimization is the field of
knowledge about increasing the speed
Performance optimization employees a
number of technique that are
implemented within an organization
It includes functionality of network,the
monitoring of bandwidth,capacity
application protocals,network traffic and
many others.
13

Index design
Query design
Database design
14

Describes a group of activities that are
used to optimize the performance of a
database.
For this there are two simple rules :-
 Minimize network traffic.
 Process data faster
15

Efficient index design
Efficient Query design
Efficient database design
16

 An index for a table is a data Organization that
enables certain queries to access one or more
records of that table fast.
Proper tuning of index design is essential
to high performance of the database.
Index can be created by using one or
more columns of a database table.
17

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An index can be created on
upper(last_name). which would only
store the uppercase versions of
last_name field in the index.

 Describes how the correct design of the query used
by an application can significantly improves the
performance.
 Efficient SQL code is primarily about efficient
queries using the SELECT command.
 The SELECT command allows use of a WHERE clause,
reducing the amount of data read.
 The WHERE clause is used to return (or not return)
specific records.
 The UPDATE and DELETE commands can also have a
WHERE clause and, thus, they can also be
performance-tuned with respect to WHERE clause
use, reducing the amount of data accessed.
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Proper tuning of database design is
essential to high performance of the
database.
Normalization of logical database design
yields the best performance
improvement of database.
Normalization is the process of breaking
down a single table into many small
tables with few fields(columns).
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Avoid data duplication.
 Faster sorting
 Avoid loss of data
 Index creation, etc
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Performance tuning and optimization (ppt)

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