On the problem of computer CPU occupation

It is recommended to use the process manager of the optimization master. Or download a separate process manager to check the process

-----------------. When using Windows XP operating system, it will slow down when using the system. When I look at Task Manager, I find that the CPU usage reaches 1%. How did this happen? Encountered a virus, there is something wrong with the hardware, or there is something wrong with the system settings. In this paper, the author will explain why the system resource occupancy rate will reach 1% from three aspects: hardware, software and virus.

CPU often takes up 1%, and the main problems may occur in the following aspects:

Nine possibilities of high CPU usage

1. Anti-virus software causes failures

As the new versions of KV, Jinshan and Rising have all joined the random monitoring of web pages, plug-ins and emails, the system burden has undoubtedly increased. Treatment: There is basically no reasonable treatment. Try to use the least monitoring service, or upgrade your hardware.

2. The driver is not certified, resulting in 1% CPU resource occupation.

A large number of beta drivers are flooding on the Internet, which causes the failure that is difficult to find. Treatment: Pay special attention to the drivers of graphics cards. It is recommended to use drivers certified by Microsoft or officially released, and strictly check the model and version.

3. Viruses and Trojans cause

a large number of worms to replicate rapidly inside the system, resulting in a high CPU resource occupation rate. Solution: Clean the system memory and local hard disk thoroughly with reliable anti-virus software, and open the system setup software to see if there are any abnormal startup programs. Update and upgrade anti-virus software and firewall regularly, strengthen anti-virus awareness and master correct anti-virus knowledge.

4. control panel-administrative tools-service-—RISING REALTIME MONITOR SERVICE, click the right mouse button and change to manual.

5. Start -> Run -> msconfig-> Start, close unnecessary startup items, and restart.

6. check the "svchost" process.

svchost. exe is a core process of Windows XP system. Svchost.exe not only appears in Window s XP, but also exists in Windows systems using NT kernel. Generally, in Windows 2, the number of svchost.exe processes is 2, while in Windows XP, the number of svchost.exe processes rises to 4 or more.

7. check the network connection. Mainly network cards.

8. viewing network connections

when a computer with Windows XP installed as a server receives a connection request on port 445, it will allocate memory and a small amount of CPU resources to serve these connections. When the load is too heavy, the CPU utilization rate may be too high, because there is an inherent trade-off between the number of work items and the response ability. You need to determine the appropriate MaxWorkItems settings to improve the system responsiveness. If the set value is incorrect, the responsiveness of the server may be affected, or a user monopolizes too many system resources.

to solve this problem, we can modify the registry: in the registry editor, expand the branch of [HKEY _ local _ machine \ system \ currentcontrolset \ services \ lanmanserver] in turn, and create a new DWORD value named "maxworkitems" in the right window. Then double-click the value, type the following values in the opened window and save to exit:

If the computer has more than 512MB of memory, type "124"; If the computer memory is less than 512 MB, type "256".

9. Let's see if Windows XP uses the right mouse button to cause the CPU to occupy 1%

Not long ago, it was reported that using the right mouse button in the resource manager would cause the CPU to occupy 1%. Let's see what happened.

Signs:

In Explorer, when you right-click a directory or a file, You may have the following problems:

The copying operation of any file will probably stop at that time.

The speed of network connection will be significantly reduced.

All streaming input/output operations such as listening to music with Windows Media Player may be the cause of music distortion:

When you right-click a file or directory in the Explorer, the CPU utilization will increase to 1% when the shortcut menu is displayed.

Solution:

Method 1: Turn off "Use Transition Effects for Menus and Tooltips"

1. Click Start-Control Panel

2. Double-click Display in Control Panel

3. Click Appearance tab in Display properties <

Method 2: When clicking a file or directory with the right mouse button, first use the left mouse button to select your target file or directory. Then use the right mouse button to pop up the shortcut menu.

CPU 1% solution

In general, if the CPU is 1%, our computer will always slow down, and many times we can solve it by making a little change without asking those prawns.

When the machine slows down, of course, the first thing we think of is the task manager. Let's see which program accounts for a large proportion. If it is a big program, we can forgive it. After closing the program, as long as the CPU is normal, it will be fine. If not, then you need to see what program it is. When you can't find out what this process is, go to google or baidu to search. Sometimes it's useless to just finish. Under xp, we can combine the startup items in msconfig and turn off some unused items. In 2, you can go to the next winpatrol to use it.

some commonly used software, such as the browser, takes up a lot of CPU, so it is necessary to upgrade the software or simply replace it with other similar software. Sometimes the software and the system will be a little incompatible. Of course, we can try the compatibility item given to us under xp system and right-click the. exe file to select compatibility.

svchost.exe is sometimes a headache. When you see that one of your svchost.exe takes up a lot of CPU, you can go to the next aports or fport to check its corresponding program path, that is, something is using this svchost.exe. If it is not under c:\Windows\ system32 (xp) or C: \ WINT \ System32 (2), it is suspicious. Upgrade antivirus software to kill virus.

Right-clicking a file causes 1% CPU usage, which we will also encounter. Sometimes right-clicking to pause may be the problem. Official explanation: first click the left button to select, and then right click (not very understandable). Unofficial: By right-clicking on the desktop-Properties-Appearance-Effects, cancel "Use the following excessive effects for menus and tooltips". There are also some anti-virus software that will affect the file monitoring, and you can turn off the file monitoring of anti-virus software; There is also the same reason for monitoring web pages, plug-ins and emails.

This phenomenon may sometimes occur in some drivers. It is best to install the drivers certified by Microsoft or officially released, and sometimes the drivers can be upgraded appropriately, but remember that the latest drivers are not the best.

CPU cooling software, because the software will use all the CPU idle time to cool down when it is running, but Windows can't distinguish the difference between the common CPU occupation and the cooling instruction of cooling software, so the CPU always displays 1%, so there is no need to worry about this and it will not affect the normal system operation.

When dealing with a large word file, the CPU will be tired because of the spelling and grammar check of word. Just open the tools of word-Options-Spelling and Grammar and tick "Check Spelling and Grammar".

after clicking the avi video file, the CPU utilization rate is high because the system has to scan the file first, check all parts of the file and build an index; Solution: Right-click the folder where the video file is saved-Properties-General-Advanced, and uncheck the box that allows the indexing service to index the folder for quick search.

1% CPU utilization case analysis

1. The dllhost process causes the CPU utilization to occupy 1%

Features: The normal CPU consumption of the server should be below 75%, and the CPU consumption should fluctuate up and down. For a server with this problem, the CPU will suddenly remain at the level of 1% and will not decline. Looking at the task manager, we can find that DLLHOST.EXE consumed all the CPU idle time. In this case, the administrator had to restart the IIS service. Strangely, everything was normal after restarting the IIS service, but after a while, the problem appeared again.

Direct cause:

One or more ACCESS databases were damaged in the process of reading and writing for many times. When Microsoft's MDAC system wrote this damaged ACCESS file, the ASP thread was in the BLOCK state, and as a result, other threads could only wait, IIS was deadlocked, and all CPU time was consumed in DLLHOST.

Solution:

Install the "First-class Information Monitoring Interception System", use the "Chief Document Inspector IIS Health Inspector" software in it,

enable the "deadlock finding module", and set:

p>--wblock=yes

The monitored directory, please specify the directory where the files of your host are located:

-wblockdir. The file of the log generated by test

monitoring is saved in the log directory of the installation directory. The file name is: logblock.htm

Stop IIS, then start the Chief Document Inspector IIS Health Inspector, and then start IIS. The Chief Document Inspector IIS Health Inspector will record the last written ACCESS file in logblock.htm.

after a period of time, when the problem comes out, for example, the CPU will be at 1% level all the time again, you can stop IIS and check the last ten files recorded by logblock.htm. Note that the most problematic files are often counter ACCESS files, such as "**COUNT. MDB" and "**COUNT.ASP". You can delete the last ten files or suspicious files first. We believe that after careful searching, you can definitely find this file that has worried you for a while.

after finding this file, you can delete it, or download it and fix it with ACCESS2, and the problem will be solved.

2. svchost.exe causes CPU usage to occupy 1%

In win.ini file, under [Windows], "run=" and "load=" are possible ways to load Trojan horse programs, so we must pay close attention to them. In general, there is nothing behind their equal sign. If you find that the path and file name behind them are not familiar startup files, your computer may be a Trojan horse. Of course, you have to read it clearly, because many "Trojans", such as "AOL Trojan Trojan Horse", disguise themselves as command.exe files, and if you don't pay attention, you may not find that it is not a real system startup file.

in the system.ini file, there is a "shell= file name" under [BOOT]. The correct file name should be "explorer.exe". If it is not "explorer.exe" but "shell = explorer.exe program name", then the program that follows is the "Trojan horse" program, which means that you have already won the "Trojan horse".

The situation in the registry is the most complicated. Open the registry editor through the regedit command, and click on the directory "HKEY-local-machine \ software \ Microsoft \ Windows \ Current Version \ Run" to see if there are any unfamiliar autostart files in the key values, with the extension of EXE. Remember here: some "Trojan horse" programs generate files that are very similar to the system's own files, and they want to get away with it through disguise, such as "Acid Battery v1. Trojan horse", which changes the registry "HKEY-Local-Machine \ Software \ Microsoft \ Windows \ Current Version \ The key value of Explorer under Run is changed to Explorer = "c: \ windows \ explorer.exe", and there are only "I" and "L" differences between Trojan horse program and real explorer. Of course, there are many places in the registry where Trojan horse programs can be hidden, such as "HKEY-current-user \ software \ Microsoft \ Windows \ currentversion \ run" and "HKEY-users \ * * * \ software \ Microsoft \ Windows \ currentversion \ run".