July 07 Updates and Post Install CPU Usage from MSCORSVW

After rebooting my machine today, the July updates were ready to be installed, I installed all 11 and rebooting. I launched Process Explorer to keep track of my system's CPU usage (I've done this for the past couple of weeks ... Process Explorer helps me see what causes my machine to lag).

I opened up a couple of applications but then turned away for 10 - 15 minutes to start work on the scheduled 404 machine that I had in my office.

When I looked back, my CPU had spiked to 100%. What the heck? In the process list was an unusual name, mscorsvw.exe. Not familiar with that, I looked it up. Turns out, mscorsvw.exe is the tool that "is precompiling .NET assemblies in the background" in order to optimize how they run.

Since my machine received 2 .NET updates this morning, looks like this MSCORSVW was taking advantage of the "quiet time" to do its thing ... whatever that was.

Security Update for Microsoft .NET Framework, Version 1.1 Service Pack 1 (KB928366)
Security Update for Microsoft .NET Framework, Version 2.0 (KB928365)

Found more of an explanation of the MSCORSVW tool here.

http://dotnetjunkies.com/WebLog/johnwood/archive/2006/04/09/mscorsvw_cpu.aspx
http://searchwincomputing.techtarget.com/tip/0,289483,sid68_gci1225866,00.html

More of a curiosity than anything else.