How come LinkedIn uses 3.5 GB of RAM?

3•hdjY28•5h ago

I saw it first on Chrome, decided to test in Safari. Very similar numbers.

I also compared it with Facebook, with 5 minute deliberate scrolling I got it to consume 650 MB at most, with average being about 400 MB.

Any web developers who can explain the huge discrepancy between LinkedIn and Facebook? It seems like the amount of visual information is almost the same in the feed, yet LinkedIn takes up 5-7x more memory.

I looked up, Facebook uses React and the virtual DOM, whereas LinkedIn uses Ember (never heard of that one before). Is it simply that Facebook is better about dynamically kicking out JavaScript objects when they'ren no longer needed?

Comments

stefanos82•5h ago

They are illegally collecting a number of data from your computer with background processes and there was a data leak from them a few days ago where they demonstrate with their hack what LinkedIn actually collects from its users.

Just watch this video [1] which explains the whole situation in great detail and you will understand.

[1] https://www.youtube.com/watch?v=Mn_CHzm7vwA

rvz•5h ago

Because it is hungry for your data and specifically engineered to collect as much data as possible.

All the charade of preaching efficient algorithms, engineering, optimization etc at LinkedIn and yet just look at them unable to fix basic memory leaks across tabs and idle usage taking 100% CPU just to load the timeline. Leads me to believe they don't even use profilers or any performance engineering best practices.

If anyone re-interviewed these engineers, they would fail their own interview questions.

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