646384 - Feature request: Measure resources consumed by each tab

Status: RESOLVED DUPLICATE of bug 610165

(Firefox :: General, enhancement)

Description

[Zdenek Kabelac]

User-Agent:       Mozilla/5.0 (X11; Linux x86_64; rv:2.0) Gecko/20100101 Firefox/4.0
Build Identifier: Mozilla/5.0 (X11; Linux x86_64; rv:2.0) Gecko/20100101 Firefox/4.0

I'm often noticing, that after some time - FF gets slowed down somewhat. It seems like it's related to Java script usage - and possibly some memory leaking.

It would be probably nice to have some 'guard' rules over tabs - so I can have very quick overview which tab is consuming to many resources.

I think 'memory' and 'CPU' are 2 main importan thing I'd like to easily see.

This would give me probably some hints - if there is page with some excessing Java script usage - and whether page takes gradually more memory over the time.

Often I've quite a lot of tabs - so it's nearly impossible to get some knowledge about which page might be doing evil thing.

Maybe there is such thing already developed and hidden inside some internal page??  (like about:config ?)

A nice bonus would be if the mozilla could keep some history of it's memory usage - so when sudden memory leak happens - it would be easily traceable which page triggered that ?



Reproducible: Always



Expected Results:  
Some nice (possible interactive) page where I could check resource consumption for each tab  -  maybe tracing 'extensions'  could be also nice (i.e. if extension is broken and it's leaking memory) ?