Yes,
After a reboot, CPU utilization doesn't immediately spike all the way up
but gradually starts to climb until after a few minutes, it's at around
50 to 60%.

Al
 

-----Original Message-----
From: MSU Network Administrators Group [mailto:[log in to unmask]] On
Behalf Of Michael Surato
Sent: Friday, July 17, 2009 4:05 PM
To: [log in to unmask]
Subject: Re: [MSUNAG] Dnscache in Svchost using over 60% of CPU?

Am I correct in assuming that this persists through reboots?

>>> On 7/17/2009 at 4:02 PM, Al Puzzuoli <[log in to unmask]> wrote:
> Thanks to everyone who has responded.
> Tried disabling IPV6, the problem remains.  I've done checks for 
> viruses and malware, everything comes up clean.  The machine is using 
> local DNS servers, and the default hosts file.
> 
> At this point, I feel like the most satisfying solution would be a big

> hammer but alas, I'm guessing that wouldn't go over very well.  I'm 
> tempted to just do a clean reinstall of the OS, I'm betting there's a 
> good chance I wouldn't see this problem again, but I hesitate to do 
> that without understanding what's going on in the first place.
> 
> Al
> 
> 
>   
> 
> -----Original Message-----
> From: Jeffrey Utter [mailto:[log in to unmask]]
> Sent: Friday, July 17, 2009 3:26 PM
> To: Al Puzzuoli
> Subject: RE: [MSUNAG] Dnscache in Svchost using over 60% of CPU?
> 
> You can try the suggestion in the last post in this thread:
> http://social.technet.microsoft.com/Forums/en-US/itprovistanetworking/
> th
> read
> /d2a2ad2d-a406-410c-9b7a-e22104fd2e2e
> 
> if that works I'll let you pass it along to NAG, but I didn't want to 
> spam them a solution I hadn't tested.
> 
> Good luck,
> 
> Jeff Utter
> 
> -----Original Message-----
> From: MSU Network Administrators Group [mailto:[log in to unmask]] On

> Behalf Of Al Puzzuoli
> Sent: Friday, July 17, 2009 2:57 PM
> To: [log in to unmask]
> Subject: [MSUNAG] Dnscache in Svchost using over 60% of CPU?
> 
> Having an issue on a Vista Business box.  Long story short, a case of 
> very high CPU utilization.  I tracked the culprit down to the DNS 
> client service (Dnscache), but that's only half the battle.  Now that 
> I know Dnscache is the offending service, what to do about it?  This 
> machine is part of my domain.  As far as I know, no other machines on 
> the domain are exhibiting the same issue.  I tried doing an ipconfig 
> /flushdns, but that didn't matter.
> 
> Anyone have ideas as to what might cause this and what I could do to 
> fix it?
> 
> Thanks,
> 
>  
> 
> Al Puzzuoli                              
>  
> Michigan State University
>  
> Information Technologist                                       
> http://www.rcpd.msu.edu
>  
> Resource Center for Persons with Disabilities
>  
> 120 Bessey Hall East Lansing, MI  48824-1033
>  
> 517-884-1915
>