Here's top sorted by memory

  PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND                                
 4927 shadi     20   0 2227492 320544 127896 S   0.7  8.2   0:42.40 firefox                                
 4984 shadi     20   0 2071260 218544 100976 S   0.3  5.6   0:27.41 Web Content                            

ATM, I only have 1 firefox tab open, from which I'm submitting this question. There's 4GB RAM in my laptop, so that's 200 MB for 1 tab for Web Content. If I close firefox, Web Content goes away (and I have to retype this question .. lol), so I guess it's related to firefox.

What's Web Content?



Web content is a separate process created for a tab so that it is separated from the main process. This might be done to increase security and speed. If you kill that process, it'll also kill a tab so I wouldn't mess with it. Most websites nowadays use tons of memory because they assume that all modern computers have tons of spare memory.

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