Memory monitor xp12/8/2023 The Users tab (which doesn't appear if Fast User Switching is disabled) shows what user accounts are in use (see Chapter6). The Networking tab displays information about your network connection, if any (see Chapter 28). If you want to see only your applications programs, rather than all the Windows-related background processes that take up most of the processes list, click the Application tab. The Processes tab lists all the processes that are currently running. The Task Manager loads a small icon in the notification area of the task bar, with bars that indicate at what percentage the CPU is being used. You can run the Task Manager by right-clicking the taskbar and selecting Task Manager, or by pressing C TRL-A LT-D EL. The Task Manager is a small utility that comes with Windows and displays performance data, running applications, system-level processes, and network operability (see Figure 34-5). This helps determine whether the most effective improvements would be through software reconfiguration or a hardware upgrade, such as adding more memory. Sometimes, when system performance is unacceptable, you can monitor key aspects and determine where the bottleneck is occurring. Windows, like any computer system, can monitor many aspects of its own operation, including CPU use, the software disk cache, disk operations, serial port operations, and network operations. Monitoring System Use with the Task Manager (A cycle is a process in which the CPU completes one string of instructions.) The best thing to do is to monitor your system to see where your computer's cycles are going. If you only have a 64MB system but have 256MB appetites, your system will operate unreliably, if at all. This is because Windows XP requires access to global system resources just like all other versions of Windows, so the benefits of protected memory do not apply in the event of a general system overload. If you push Windows XP to the limit of its resources-by running too many programs at the same time-it behaves unreliably, just as Windows Me/9x did. Of course, Windows XP has its own liabilities. The protected memory space also allows you to restart a crashed application safely, which rarely worked in Windows Me/9x. If a program crashes, XP is far more likely to be responsive than Windows Me was, because other programs and Windows itself are not affected by the crash. Windows XP runs each application in its own protected memory space. Because it is based on Windows 2000/NT, Windows XP inherits its foreparents' technological edge in memory management and does not succumb to the same resource limitations as Windows Me/9x. Windows XP deals with system resources-memory used by Windows applications-on a much more sophisticated level than Windows Me/9x. To keep Windows running smoothly, it helps to know when your system resources are running low. Chapter 34: Tuning Windows XP for Maximum Performance
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