what's the purpose of vcbuildhelper.exe?

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Hi, I am trying to zoom on on a slow build issue with VS2005.

Web hopping lead me to vcbuildhelper.exe and I see it spawned doing my IDE and command line builds, which spawns CL.EXE at less than 50% CPU.

I deleted VCBUILDHELPER.EXE since I don't see it in another earlier installation of VS2005 just to see if its optional. The vcbuild.exe runs (still slow as hell), but it doesn't complain with the missing VCBUILDHELPER.EXE.

Whats its purpose? Do I needed it?

And does anyone have a clue as to why VS2005 builds is awfully slow?

Is there any way I can make this faster, possible hooking into the process to increase the priority of the CL spawn?

I saw some 1999 hack at codeguru.com that did this for VCSPAWN.EXE and recent June 2008 follow up that did this for VCBUILDHELPER.EXE.

http://www.codeguru.com/cpp/v-s/tips/article.php/c439/

In this case, they wanted to slow it down!!!

Is that the answer, to hack into this EXE?

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