> performance hit is definitely noticeable Could you please name which applicati...

rjzzleep · on April 28, 2021

I notice it by how long it takes to start applications when I run them through firejail vs. when I run them directly.

I don't know if it also makes a difference during execution.

EDIT: it's kinda amusing to get downvoted on this.

a) There's no performance issue. Just use linux sandboxes

b) There are these possible performance hits

c) I use those sandboxes and I have observe X performance issues.

a) Your performance issues are not valid performance issues, because I say so.

Ok, gotcha

swiley · on April 28, 2021

That's really a caching issue. Normally dynamically linked bins share a lot of code pages (many are already loaded) due to SOs. In jailed apps these are duplicated and have to be loaded again for each app.

sokoloff · on April 28, 2021

It’s a caching issue that manifests itself as a performance difference, which is all GP claimed.

hjek · on April 28, 2021

I'm using a low-spec laptop, so I usually notice these things before others. With Firejail I don't notice any performance hit at all on any of the apps I've used: Telegram, various windows games under Wine, Chromium.