Performance tuning and optimization on client server
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The document discusses performance tuning and optimization for client/server systems. It covers improving performance at the client level through hardware upgrades like faster processors and more memory, and software optimizations like using a multitasking operating system and optimizing application performance. Server-side optimizations include upgrading hardware, offloading processing to server CPUs, and using multiple servers. The document also discusses database performance tuning through efficient index design, query design using WHERE clauses to reduce data access, and database normalization.
Performance tuning and optimization on client server
- 2. Client Performance • 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
- 3. Hardware 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
- 4. Software the software of the client workstation can be broken down into two performance reasons:- Operating system Application 4
- 5. Operating System 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
- 6. Application 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
- 7. Server Performance This section focus on performance gains and improvements you can make at the server 7
- 8. Hardware 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
- 9. Software 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
- 10. Performance Tuning 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 10
- 11. Systematic tuning follow these steps 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
- 12. Cont. Measure the performance of the system after modification If the performance make better than adopt otherwise put it the back it was. 12
- 13. Performance Optimization 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
- 14. Database performance INDEX DESIGN QUERY DESIGN DATABASE DESIGN 14
- 15. Database Performance 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
- 16. For Optimum Performance We Need: Efficient index design Efficient Query design Efficient database design 16
- 17. Efficient Index Design 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
- 18. Example An index can be created on upper(last_name). which would only store the uppercase versions of last_name field in the index. 18
- 19. Efficient Query Design 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. 19
- 20. Example:- 20
- 21. 21
- 22. Efficient Database Design 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). 22
- 23. Why Normalize? Avoid data duplication. Faster sorting Avoid loss of data Index creation, etc 23
- 24. Example 24