Windows 2008 - Weird Spikes in CPU Usage svchost.exe

I have a Windows 2008 server running IIS.

I have noticed Weird regularly timed Spikes in CPU usage (100%) from svchost.exe (dhcpcore.dll wevtsvc.dll lmhsvc.dll)

What could this be?


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Reply to: Windows 2008 - Weird Spikes in CPU Usage svchost.exe
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Reporting: Windows 2008 - Weird Spikes in CPU Usage svchost.exe
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Clarification Request
Why is that a concern?

I think it's normal for an app to run full out to get something done when called upon. But today you find folk looking at graphs and wanting smooth lines or something else.

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Why is that a concern?

If there was something to explain the spike then I could understand.
I would say it is not normal to see 100% CPU spikes usage every couple of minutes or so. I don't observe that behavior on my other servers or my desktop. Nothing even close to 100% which leads me to believe there is something wrong.

I checked another similar server and the exact same process "svchost.exe (dhcpcore.dll wevtsvc.dll lmhsvc.dll)" uses hardly any CPU and never spikes.

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I found it normal to see such spikes.

Now I didn't tell all did I? We have a micro-server with a single core CPU so it spikes all the time since there is just one cpu core. When Windows does a memory sweep it spikes. There's nothing wrong about that for this micro server. However a new intern will think otherwise and we'll have to tell them to work on another problem.

There are tomes on the web about investigating CPU use. So I take it you were hoping for a single fix to this query. Sadly it's rarely the same thing and sometimes it should spike as Windows is not a quiet OS.

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