Well, I finally determined what was causing this issue. I am in a MS feedback program and agreed to run their PC Advisor program. This program is what is causing the CPU spikes. When I kill the PC Advisor process (which itself is using 5-40% CPU with an average of about 15%), the svchost process immediately drops to 0%. I have contacted MS about this issue and they have someone looking into it.
Thanks to all for trying to help me out with this. Bobby -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Bobby Heid Sent: Saturday, November 22, 2008 2:32 PM To: [email protected] Subject: [H] Svchost.exe issues. Hey again, I am running Vista Business SP1 and for the past couple (could be longer) of months now have been having an intermittent issue with one of the svchost processes on my system. What is happening is that my CPU jumps to about 48% utilization (I have HT turned on, so it is probably really near 100%) for a period of time lasting minutes to over ½ hour. Process explorer points out the svchost process that hosts the DCOM Server Process Launcher (DCOMLaunch) and Plug and Play (PlugPlay) processes. When looking at the threads in the svchost process, there are usually two threads using all of the CPU, they are both ntdll.dll!UserThreadStart. In doing some research last night, I came across three threads that talk about this issue: 1) A thread that seems to have something to do with the sound devices and an enhancements tab on the configuration where you can turn off enhancements. But others in the thread, and myself, do not have the enhancements tab. 2) A thread that talks about HP printer software, which I have, but nothing seems to point at this software. 3) A thread talking about VMware virtual network adapters. Someone stated this: I figured out what the problem is: VMware virtual network adaptors. The problem disappeared after disabling both of the virtual adaptors. I am running VMware. While the high CPU usage was occurring last night, I went everywhere I could think of and disabled VMware network stuff, but nothing seemed to help. Has anyone run up against this and solved it? Any ideas? Thanks, Bobby
