Add Rust Compiler Performance 2025 Survey results

[Kobzol]

This blog post contains the results of the 2025 Rust Compiler Performance Survey, including insights, charts, and description of recent performance work that we did (also) in reaction to this survey results. All of the text was written by me, so it reflects my analysis of the survey results and my opinions. Happy to reword/remove/add things based on suggestions!

The charts for the blog were generated by my analysis scripts (rust-lang/surveys#344), same as for the annual State of Rust survey. To view the charts in the correct size and with interactivity, it is best to locally run zola serve, but the "Rendered" link below also kinda works.

CC @epage (Cargo and general perf. work) @Veykril (RA mentions) @lqd @nnethercote @Mark-Simulacrum

Rendered

[davidtwco]

This is a fantastic summary of the survey results, very well-written and understandable.

[nnethercote]

It was surprising for us to see that around a quarter of respondents who (almost) never use a debugger still want to have full debuginfo generated by default.

It's natural to assume that all survey respondents are rational and well-informed, but it's never true. I think the wording here is fine, but I also think these users' opinions can be ignored, because I think they didn't understand everything.

[nnethercote]

This is a fantastic summary of the survey results, very well-written and understandable.

Agreed! I particularly like all the links in the discussion, showing how all the ideas and in-progress work are connected., Great work, @Kobzol.

[Kobzol]

Thanks everyone for reviews! I did a final reading pass, fixed some typos and links, and changed the publication date to today (and thus also changed the tense of the LLD switch to future). I will let it sit for a few hours and then merge it, so that we can make TWiR.

[lqd]

What great work!