Script Download:SettingIETabProcessGrowth(VBScript).zip
http://gallery.technet.microsoft.com/scriptcenter/Setting-Tab-Process-Growth-4ead21ac
This sample can help you to operate the “TabProcGrowth” registry entry to set Tab Process Growth(Sets the rate at which IE creates New Tab processes) for Internet Explorer 8 or later. It shows how to get and set Tab Process Growth setting for the Internet Explorer installed on your computer by using VBScript.
If you have been using IE7, you are probably used to all your tabs opening under the same iexplore.exe process. The only exception is if you are on a Windows Vista machine and you are moving from Protected to Unprotected mode.
Internet Explorer 8 or later had a big makeover in this area. You will now notice that new tabs typically open in a new process. By default, IE8 will start with two instances of iexplore.exe (one for the Frame, one for the tab) and grows the number of tab processes as needed based on the amount of available RAM, the number of tabs, the integrity levels for tabs, and the number of distinct IE sessions .
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You can find more All-In-One Script Framework script samples at http://aka.ms/onescriptingallery