The USPTO just granted the company a "tab assassin" patent, which sounds more dramatic than it really is, but is designed to help users manage their open tabs.
According to the patent, which was filed in September 2011, the tab assassin would automatically shut down tabs that fall below a certain tab usage threshold. That threshold can be defined via "a period of time or an amount of activity". If a predefined or user-activity adjusted threshold is met, the tab assassin would automatically remove the tab. However, the patent also covers a "stored tab repository [that] may store information about the automatically removed tabs so that the removed tabs can be restored."
The activity level may be rather difficult to determine, since some tabs may simply be running in the background as part of a standard workspace. Google's idea to figure out whether a tab is significant or not includes the "viewing time of a tab", and comparing the "viewing time of each tab with a tab viewing threshold time and pass the tabs that have times that do not exceed the threshold to [the] tab assassin or removal." The system would also allow the user to set a period of time over which a tab would not be killed.
Chrome use an insane amount of memory when you have a lot of tabs open.
Remember that each tab gets its own process and dedicated memory (whcih also makes Chrome more stable since it is the only thing crashing)
It is very easy to exceed 2 GB of memory usage with many tabs open i chrome (especially withy youtube sessions with multiple tabs).
On a laptop with 2-3 Gigs of memory that is making it crawl really slowly.
In fact, it is the reason for me not using chrome at all on my laptop and ujse firefox instead.
(I use Chrome on my desktop though which has plenty of memory).
And there are plugins that adress this problem so there is a demand for it, but these plug-ins work very poorly, so it is a good thing that google is adressing this!
They wouldn't do it if it wasn't needed, and it is, since the plugs works so poorly and many still use computers with too little memory in them!
Then the solution would be "don't open so many tabs." There's this cool feature built into the tabs in Chrome, maybe you've never noticed it, but each open tab has an "x" on the right side of it. If you click it, the tab closes.
Personally, I think they should call it the "Tab Nanny" instead. "Tab assassin" sounds like something cool instead of something to pacify the people who are too lazy to click an x.