Can you identify which tabs are using too much memory or CPU?

I don't know if you have access to this information, but it would be really useful to know which tabs are using up huge amounts of memory and/or CPU. The idea is to quickly identify which tabs are causing problems. I think it is not necessary to display this info all the time. It would be useful even if it is displayed only upon request or only where then is a tab that is especially greedy about memory or CPU.  

Once in a while, there will be a tab that is using up tons of memory and is threatening system stability. It would be useful for such a tab to be identified with a red or yellow flashing icon.

If memory usage is displayed as a column of numbers I prefer that the entire column would be in the same units such as MB.  However, instead of a number, even an icon indicating which tabs are consuming lots of memory or CPU would be helpful. Lightweight tabs don't need an icon, making it easier to identify the problem tabs. Heavyweight tabs could be color coded or be an icon like a barbell with more or less weight on it.

The same type of thing could be useful for other things that cause problems such as a tab that us doing a lot of disk I/O, or WiFi, etc.