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emily | we don't want PGO by default on packages in the installation ISO right? | 15:54:15 |
emily | cf. https://github.com/NixOS/nixpkgs/pull/336564 | 15:54:16 |
Alyssa Ross | PGO can be reproducible, and if so there's not a problem. | 15:57:35 |
Alyssa Ross | But in most cases it's not. | 15:57:43 |
raboof | Ideally not indeed - indeed I've heard rumours of reproducible PGO builds, but that's probably only if you specifically work towards that, and even then I'm sceptical 😄 | 15:58:03 |
emily | In reply to @qyliss:fairydust.space PGO can be reproducible, and if so there's not a problem. by having someone record a profile and shipping that as an input, right? | 15:58:05 |
emily | or is there another way? | 15:58:08 |
Alyssa Ross | By having the thing you run to profile be deterministic | 15:58:22 |
Alyssa Ross | which mostly means single threaded | 15:58:27 |
emily | I see | 15:58:29 |
emily | that sounds hard | 15:58:31 |
Alyssa Ross | our foot pgo is reproducible | 15:58:33 |