[gn_desc] Optimizations to increase startup speed by 60 percent

Changes the optimization level to 'speed' for the binary and it's rlibs
as well as reading the entire json file into a String buffer before it
starts to parse it with serde.

Half the improvement is from reading into a String, the other half from
the increased optimization level.

Change-Id: I87aac7ae78c374ea7653a38a0c8ce496780aa7f7
Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/813368
Commit-Queue: Auto-Submit <auto-submit@fuchsia-infra.iam.gserviceaccount.com>
Fuchsia-Auto-Submit: Aaron Wood <aaronwood@google.com>
Reviewed-by: Erick Tryzelaar <etryzelaar@google.com>
4 files changed
tree: adaecd20c2f3eecaecb355b79f22929d2e705656
  1. boards/
  2. build/
  3. bundles/
  4. docs/
  5. examples/
  6. products/
  7. scripts/
  8. sdk/
  9. src/
  10. third_party/
  11. tools/
  12. zircon/
  13. .clang-format
  14. .clang-tidy
  15. .editorconfig
  16. .git-blame-ignore-revs
  17. .gitattributes
  18. .gitignore
  19. .gitmodules
  20. .gn
  21. .ignore
  22. .style.yapf
  23. analysis_options.yaml
  24. AUTHORS
  25. BUILD.gn
  26. CODE_OF_CONDUCT.md
  27. CONTRIBUTING.md
  28. fuchsia.code-workspace
  29. LICENSE
  30. OWNERS
  31. PATENTS
  32. pyrightconfig.json
  33. README.md
  34. rustfmt.toml
README.md

Fuchsia

What is Fuchsia?

Fuchsia is an open source, general purpose operating system supporting modern 64-bit Intel and ARM processors.

We expect everyone interacting with our project to respect our code of conduct.

Read more about Fuchsia's principles.

How can I build and run Fuchsia?

See Getting Started.

Where can I learn more about Fuchsia?

See fuchsia.dev.