Shut down unnecessary processes

100% CPU usage in Windows XP, after reading the "Task Manager", we found that the CPU usage reached 100%. How did this happen? In this article, I will explain why the system resource usage reaches 100% from three aspects: hardware, software, and virus. CPU usage is usually 100%, and the main problems may occur in the following aspects: nine possible causes of high CPU usage 1. Anti-virus software faults because the new versions of Kv, Kingsoft, and rising all added random monitoring of web pages, plug-ins, and emails, which undoubtedly increased the system burden. Solution: Basically there is no reasonable solution. Try to use the least monitoring service or upgrade your hardware. 2. the driver has not been certified. As a result, 100% of the CPU resources occupied by the beta driver are flooded online, making it hard to find the cause of failure. Processing Method: especially for graphics card drivers, it is recommended that you use a Microsoft-certified or officially released driver and strictly check the model and version. 3. Viruses and Trojans cause a large number of worms to quickly replicate within the system, resulting in a high CPU resource usage rate. Solution: use reliable anti-virus software to thoroughly clean up the system memory and local hard disk, and enable the system setting software to check for programs with startup exceptions. Update and Upgrade anti-virus software and firewall regularly to enhance anti-virus awareness and master the correct anti-virus knowledge. 4. Right-click Control Panel-Administrative Tools-service-rising realtime monitor service and choose manual. 5. Start->; Run->; msconfig->; Start, close unnecessary startup items, and restart. 6. view the "svchost" process. Svchost.exe is a core process of Windows XP. Svchost.exe not only appears in Windows XP, but also exists in the Windows System Using ntinner. Generally, in Windows 2000, the number of svchost.exe processes is 2, while in Windows XP, the number of svchost.exe processes has increased to 4 and more. 7. View network connections. This is mainly for NICs. 8. View network connections when a computer installed with Windows XP is used as a server and receives a connection request from port 445, it allocates memory and a small amount of CPU resources to provide services for these connections. When the load is too heavy, the CPU usage may be too high, because there is an inherent trade-off between the number of work items and the response capability. Determine the appropriate maxworkitems settings to improve the system response capability. If the set value is incorrect, the server's response capability may be affected, or a user excludes too many system resources. To solve this problem, we can modify the Registry: in the Registry Editor, expand the [hkey_local_machinesystemcurrentcontrolsetserviceslanmanserver] branch, and create a New DWORD Value named "maxworkitems" in the right window. Double-click the value. In the displayed window, type the following value and save and exit: if the computer has more than 1024 MB memory, type "512". If the computer memory is less than MB, type 256 ". 9. Check if Windows XP uses the right mouse to cause CPU usage of 100%. Recently, it was reported that using the right mouse in the resource manager will cause 100% CPU usage. Let's take a look at what's going on? Warning: In resource manager, When you right-click a directory or file, you may encounter the following problems: any file copy operation may stop the corresponding network connection speed at that time, which will significantly reduce all stream input/output operations. For example, using Windows Media Player to listen to music may be caused by music distortion.: when you right-click a file or directory in the resource manager, the CPU usage increases to 100% when the shortcut menu is displayed, when you close the shortcut menu, the normal level is returned. Solution: Method 1: close "use transition effects for menus and Tools" 1. Click "start"-"Control Panel" 2. Double-click "display" in "Control Panel" 3. Click "display" click "appearance" tab 4 in the "appearance" tab, click "effect" 5 in the "appearance" tab, and in the "effect" dialog box, clear the check box before "use transition effect for menu and tooltip" and click "OK" twice. Method 2: Right-click a file or directory and use the left mouse button to select your target file or directory. Then, right-click the shortcut menu to bring up the shortcut menu.
In general, if the CPU account for 100%, our computer will always slow down. In many cases, we can solve this problem by making a few changes, instead of asking those prawns. When the machine slows down, we first think of the task manager to see which program accounts for a relatively large proportion. If it is a large program, we can forgive it, after the program is closed, it will be okay if the CPU is normal. If not, you have to look at what the program is, if you cannot find out what this process is, search for it by Google or Baidu. Sometimes it is useless to end only. In XP, we can combine the startup items in msconfig to disable some unused items. In 2000, you can use the next winpatrol. Compatibility of the hosts file. Optional. If it is not under C: windowssystem32 (XP) or C: winntsystem32 (2000), it is suspicious. Upgrade anti-virus software. Right-click the file and cause 100% of CPU usage. This problem may occur when you right-click to pause. Official explanation: Click and select, and then right-click (not very understandable ). Unofficial: Right-click the desktop, choose Properties> appearance> effect, and deselect "Use the following excessive effect (u)" for menus and tools. Some anti-virus software may also have an impact on file monitoring. You can disable file monitoring for anti-virus software, and monitor webpages, plug-ins, and emails. Some drivers may also be like this sometimes. It is best to choose a driver approved by Microsoft or officially released. Sometimes you can upgrade the driver appropriately, but remember that the latest driver is not the best. CPU cooling software, because the software will use the CPU idle time during operation to reduce the temperature, but Windows cannot distinguish between common CPU usage and cooling software cooling instructions, therefore, the CPU is always 100%, so you don't have to worry about it and it does not affect normal system operation. When processing a large Word file, the CPU is exhausted due to the spelling and syntax check of the word, open the word tool-Option-spelling and syntax to remove the "check spelling and check Syntax" check. After you click an AVI video file, the CPU usage is high because the system needs to scan the file, check all parts of the file, and create an index. solution: right-click the folder that saves the video file-properties-General-advanced, and remove the Enable Index Service to compile the index of the folder for quick search. Case study of 100% CPU usage 1. 100% CPU usage caused by the DLLHOST process: the normal CPU consumption of the server should be below 75%, and the CPU consumption should be fluctuating, the CPU will suddenly remain at a 100% level and will not drop. View the task manager and you can find it is DLLHOST. EXE consumes all the CPU idle time. In this case, the Administrator has to restart the IIS service. The strange thing is that after the IIS service is restarted, everything works normally, however, after a while, the problem may occur again.