Add note about how to preserve debug symbols in Rust

[lukevalenta]

Summary

Add note about how to preserve debug symbols in Rust when profiling.

Screenshots (optional)

Without debug symbols:

With debug symbols:

Documentation checklist

• The documentation style guide has been adhered to.

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PR Change Summary

Added instructions for preserving debug symbols in Rust when profiling.

• Included a note on configuring Cargo.toml to preserve DWARF debug symbols for Rust Workers.
• Updated instructions for using the dev profile in wrangler.toml to maintain debug symbols.

Modified Files

• src/content/docs/workers/observability/dev-tools/cpu-usage.mdx

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[kodster28]

Howdy @lukevalenta, tagged @ToriLindsay to help with this.

Also gave you write perms on our repo so -- once it's approved -- you should be able to merge in yourself.

[ToriLindsay]

Hi @lukevalenta 👋 Is wasm an industry standard that we trust? It can be tricky to use external dependencies like that in the docs if it could be subject to change or even become malware. If not, is there some more general advice we can provide instead? Thanks!

[lukevalenta]

Hi @ToriLindsay, Web Assembly (wasm) is the the glue that allows us to run any compiled language (like Rust, Go, or C on Workers (see https://developers.cloudflare.com/workers/runtime-apis/webassembly/), so this PR isn't suggesting to add any external dependencies that aren't already present.

(cc @zebp or @irvinebroque)

[ToriLindsay]

@lukevalenta Ah ok. I didn't recognize the acronym. Thanks for the clarification! I'll approve.

[ToriLindsay]

@lukevalenta Ah ok. I didn't recognize the acronym. Thanks for the clarification! I'll approve.