Scarecrow Man Posted November 4, 2006 Report Share Posted November 4, 2006 So, when I am online, my svchost.exe climbs to 100% processor usage.I can ctrl+alt+del and end the task, and it works, but it also disrupts parts of my system such as my sound card.Using Process Explorer by sysinternals, I can narrow it down to one specific dll file causing this problem. nt.dllIf I look into process explorer, explore the svchost.exe causing the problem (there are several, but only one has issues) I find the following: ntdll.dll!RtlAllocateHeap+0x18cUsing the wonderfull process explorer, I can suspend this task, rather than kill it, which fixes the problem, until I restart, at which point it's back in full force.I should also mention that the same process as above, ntdll.dll!Rtl....etc is running with the exact same name, but not causing any problems. In fact, the same process appears several times, but only one causes problems.I've done sfc /scannow which repaired a file in my dllcache folder, rebooted and still had the problem. I've run AVG Full Scan with updated definitions, but nothing found. I am going to try Trend Micro's Housecall, but on dial-up it takes quite some time to load.Can anyone shed some light on this? Quote Link to comment Share on other sites More sharing options...
ɹəuəllıʍ ʇɐb Posted November 4, 2006 Report Share Posted November 4, 2006 I used to have a similar problem some while ago. It did not jump right to 100%, but rise slowly over some 48 hours up to 100%. When I rebooted it started the same, over and over again.As the svchost processes do not do any actual work by themselves, I tried to find what other process is causing it. I opened the Services app (services.msc) and Task Manager, then stopped all running services, one by one. Eventually I hit the service that was causing it, and the CPU usage went down to 0.It was a service that was not related to Windows, but something completely different. (An application, actually, that was developed by my company.)So I suggest you do something similar to find out what is the source of the high CPU usage.P.S. I have to mention that this occurred on Windows XP only, on W2K it ran completely without a problem.Good luck, and let us know what you find. Quote Link to comment Share on other sites More sharing options...
CurlyWhirly Posted November 4, 2006 Report Share Posted November 4, 2006 I am going to try Trend Micro's Housecall, but on dial-up it takes quite some time to loadI thought you were on broadband now after your recent move to the USA but according to your profile you are back in Canada again Can anyone shed some light on this?Sorry I can't help :( Quote Link to comment Share on other sites More sharing options...
Scarecrow Man Posted November 4, 2006 Author Report Share Posted November 4, 2006 I used to have a similar problem some while ago. It did not jump right to 100%, but rise slowly over some 48 hours up to 100%. When I rebooted it started the same, over and over again.As the svchost processes do not do any actual work by themselves, I tried to find what other process is causing it. I opened the Services app (services.msc) and Task Manager, then stopped all running services, one by one. Eventually I hit the service that was causing it, and the CPU usage went down to 0.It was a service that was not related to Windows, but something completely different. (An application, actually, that was developed by my company.)So I suggest you do something similar to find out what is the source of the high CPU usage.P.S. I have to mention that this occurred on Windows XP only, on W2K it ran completely without a problem.Good luck, and let us know what you find.Thanks Pat, I will give this a try.I am going to try Trend Micro's Housecall, but on dial-up it takes quite some time to loadI thought you were on broadband now after your recent move to the USA but according to your profile you are back in Canada again Can anyone shed some light on this?Sorry I can't help :(You're right, I did move to USA, had a cable connection D:768K/s U:40K/s, but because of immigration issues (mainly, it costing thousands of dollars) I had to move back. Quote Link to comment Share on other sites More sharing options...
CurlyWhirly Posted November 4, 2006 Report Share Posted November 4, 2006 You're right, I did move to USA, had a cable connection D:768K/s U:40K/s, but because of immigration issues (mainly, it costing thousands of dollars) I had to move back.Sorry to hear that :( p.s. didn't mean to be nosey Quote Link to comment Share on other sites More sharing options...
Scarecrow Man Posted November 5, 2006 Author Report Share Posted November 5, 2006 Well, that was easy. It was the Automatic Updates Service, 2nd one I tried.My task manager is now at about 5%, because I had IE, MSN, Process Explorer and WinVNC running. I guess I will just need to download updates manually for now. Quote Link to comment Share on other sites More sharing options...
ɹəuəllıʍ ʇɐb Posted November 5, 2006 Report Share Posted November 5, 2006 Good! Looks like this is a known problem: http://support.microsoft.com/kb/916089/ Quote Link to comment Share on other sites More sharing options...
Scarecrow Man Posted November 20, 2006 Author Report Share Posted November 20, 2006 Thanks Pat, I will try that. Quote Link to comment Share on other sites More sharing options...
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