CN1260 Client Operating System

1. CN1260 Client Operating System Kemtis Kunanuraksapong MSIS with Distinction MCT, MCITP, MCTS, MCDST, MCP, A+

2. Agenda • Chapter 10: Dealing with Performance Issues • Quiz • Exercise

3. Performance and Baseline • Without the proper hardware, bottlenecks limit the effectiveness of software • When you relieve one bottleneck, another bottleneck may be triggered • Baseline • The performance of the system under normal condition and within design specifications • Then when a problem occurs, you compare the current performance to your baseline to see what is different

4. Analyzing Performance • There are several tools available with Windows for you to analyze performance. • Windows Experience Index • Task Manager • Performance Monitor • Resource Monitor

5. Windows Experience Index • Measures the capabilities of your computer’s hardware and software configuration and expresses the measurement as a base score • Processor, memory, disk, and video performance • The scores currently range from 1.0 to 7.9 • See Figure 10-1 on Page 191

6. Virtual Memory and Paging File • Virtual memory • A compensation of lacking of RAM needed • Combines your computer’s RAM with temporary space on your hard disk. • Virtual memory moves data from RAM to paging file • When the RAM runs low • It is much slower than accessing it from RAM • See Figure 10-2 on Page 192

7. Task Manager • Gives you a quick glance at performance and provides information about programs and processes running on your computer • Using Task Manager • See the status of running programs • Find programs that have stopped responding • Stop a program running in memory • See Figure 10-3 on Page 193 and Figure 10-4 on Page 194

8. Performance Monitor • A Microsoft Management Console (MMC) snap-in that provides tools for analyzing system performance • perfmon.exe • See Figure 10-5 on Page 195

9. Performance Monitor (Cont.) • You can add different counter into the console • %Processor Time • This counter measures how busy the processor is • The processor should never stay above 80% all of the time. • Page faults/sec • A page fault occurs when a process attempts to access a virtual memory page that is not available in its working set in RAM • If the pages/sec is 20 or higher, you should increase the memory

10. Resource Monitor • Show your system resources are used by processes and services • To start Resource Monitor, execute the resmon.exe command • See Figure 10-6 on Page 196

11. Power Management • The process of balancing battery life against performance • Advanced Configuration and Power Interface (ACPI) • Fine-tune the power consumption of a mobile computer by configuring individual components to operate at lower power levels

12. Power Management (Cont.) • Power plan • A collection of hardware and system settings that manage how your computer uses power • Balanced • Power saver • High performance • See Figure 10-7 and 10-8 on Page 199

13. Troubleshooting Performance Problems • Look at what the machine is running including the operating system and active applications • Does it meet or exceed recommended requirements? • Task Manager to see what programs and processes are running • The paging file • Disk fragment? • Rebooting your computer to reset the memory

14. Troubleshooting Performance Problems • Use Performance Monitor to determine bottleneck • Windows updates and security patches • Up-to-date anti-virus software • Check with the vendor’s website for potential problems and updates including memory leaks • A memory leak is when a program grabs some memory for some reason, and is not able to release the memory when it is finished with it

15. Assignment • Submit these before class over on Thursday • Fill in the blank • Multiple Choice • True / False • Submit these before class start on Monday • Lab 10