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Despite sandboxing, two different tabs in Chrome can share the same renderer process, for example when they share the same JavaScript environment.

Given two Chrome tabs, how can I know if they share the same process?

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Do you mean... progammatically? Visually? Through the UI? Through the task manager? Surely there is a way to distinguish at some level of the architecture, but you didn't specify what your expected user experience is. Are you writing a program or are you looking for something a (power) end-user can use? –  ÃŁŁǫǛȉЖΦΤїҪ Aug 24 '12 at 20:44
    
I'm looking for something a power end-user can use, so visually, UI or task manager are all fine. –  Randomblue Aug 24 '12 at 20:46
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1 Answer

up vote 4 down vote accepted

In Chrome, press Shift+Esc to open Chrome's task manager.

Task manager

Then, right click on the column headings in the task manager. Enable the "Process ID" column.

Process ID check box

Now, you can check the Process IDs next to each tab. If they are the same for two tabs, then the tabs are open in the same process.

Process ID column

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Excellent. Thanks –  Randomblue Aug 24 '12 at 20:48
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