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

Agenda Chapter 10: Dealing with Performance Issues Quiz Exercise

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

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

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 5

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

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

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

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

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

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

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

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

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

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