purpose of svchost.exe

My system is bogged down, and Task Manager shows "svchost.exe" uses 95 + % of the processor.  What he does?  And is it possible to make it run in the background without stalling other tasks?

It could be that your system is afflicted malicious software.  Sometimes malware will hide behind a svchost.exe process.
Beginning troubleshooting first at least make an effort to eliminate the risk of malware, then fix any issue remains the scans by operating clean.
It doesn't matter what you use for the removal and malware protection:
Download, install, update and do a full scan with these free malware detection programs:
Malwarebytes (MMFA): http://malwarebytes.org/
SUPERAntiSpyware: (SAS): http://www.superantispyware.com/
They can be uninstalled later if you wish.
If you still have questions the scans by operating clean, then to eliminate the questions and riddles, please provide additional information on your system.
What is your system brand and model?
What is your Version of XP and the Service Pack?
Describe your current antivirus and software anti malware situation: McAfee, Symantec, Norton, Spybot, AVG, Avira!, MSE, Panda, Trend Micro, CA, Defender, ZoneAlarm, PC Tools, Comodo, etc..
Click Start, run and enter in the box:
Msinfo32
Click OK and when the system info summary appears, click Edit, select all, copy and then paste the information here so that we can see some details about your system.
There will be some personal information (such as the user name and the name of the system), and anything that turns information private for you, simply delete the pasted information.
You may be able to get clues with what is happening with your svchost process using the Task Manager and maybe understand.
You will always be able to understand what is happening with your svchost process if you use Process Explorer.
Download Process Explorer, so you can see what is 'really' running on your system, especially behind those svchosts several process see you in the running task manager.
Download Process Explorer from here:
You'll like Process Explorer when you get the hang of it.  Process Explorer is the Manager of Windows taskbar on steroids.
Process Explorer installs nothing so it won't slow down your system since it works only on request.
Process Explorer can seem a little intimidating at first because it has so much information, but you will begin to make love the way it works when you're looking for performance problems.   You can even say EP you want it to be your new default 'Task Manager' value in the future.  You can always run the original tasks as Manager.
Once you get Process Explorer running, expand the columns, made drag the corners of the screen for it's largest, etc., so you can see as much information as possible in the window.  Now you can really see what is running on the system.
Here's a screenshot of my poor system when I use Process Explorer:
The CPU column is usually the most interesting start with performance issues - which uses the most
?
It is OK and normal to have several svchost running processes.  Important XP Services are actually runs under the svchost process. There are sometimes an XP Service that runs under a svchost process, sometimes there are several Services in XP, which runs under the svchost process.
Sometimes malware will hide behind a svchost process because the malware knows that you won't be able to find it in the Task Manager.  He will hide behind a svchost.exe process to deceive you, but you can outsmart it.
Malicious software can disguise itself also seems to be a legitimate process of XP or he could hide under/behind other processes that you see running in Task Manager if you can't see the execution.
The malware would trick you into thinking you must use a System Restore Point, run a repair install or reinstall your XP from scratch when you really don't.
Looking at the display in process Explorer, you want the CPU most to be associated with the system idle process.  It's 'free time' on your system, so more time there, more free.
If you look at the graphs of performance and see red spikes (or not) double click the graphic in the upper left corner to display the graph to use.  Move the mouse over any pics to see what are the causes.  Even if the Spike has already scroll screen, you can still move the mouse over the edge to see what caused.  You can also just wait for a pic to happen and then see what caused the Spike.
To help understand your process svchost and what is running under them, read this article and you will be smarter than the average bear:
Then with a few Google searches, you can watch every thing running behind your svchost process and Process Explorer and see what it is and decide if your configuration needs it or not and then decide what to do about this.
If you think you have a svchost.exe process amok, run using Process Explorer, you can right-click that offensive svchost, properties and on the Services tab and son, you can see which runs under it.
There is a CPU column it will expand (make the wider column) so that you can see CPU.  Maybe you can spot what background process is so CPU consumption under the svchost.exe process.   Stroll under the svchost process and you will find the problem.
You can also see what is running under each svchost simply by pointing your mouse on the svchost.exe process.  Some of them have just a things working under them and some will have several things (I hope that all the legitimate XP services) and some will have a lot of things.
If you have a svchost process that is afflicted, which runs under your afflicted?
No running process must defy reasonable explanation.
First, see what you can find using Process Explorer, then if nothing is obvious, additional advice.

Do, or do not. There is no test.

I decided to implement the points for a new puppy instead of a pony!

Tags: Windows

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    Read http://www.edbott.com/weblog/archives/000643.html
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    ~ Robear Dyer (PA Bear) ~ MS MVP (that is to say, mail, security, Windows & Update Services) since 2002 ~ WARNING: MS MVPs represent or work for Microsoft

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