I notice it by how long it takes to start applications when I run them through f... | Hacker News

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rjzzleep on April 28, 2021 | parent | context | favorite | on: Signal's Cellebrite Hack Is Already Causing Grief ...

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.

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