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Results ​

These results demonstrate the potential build time improvements with RBE.

System 1: 16GB RAM, 8 Cores ​

  • Specs: AMD EPYC 9634 8-Core, 16GB RAM, KVM Server

    specsSystem 1 Specifications (fastfetch output): AMD EPYC 9634 8-Core CPU, 16GB RAM, KVM Server, Debian GNU/Linux 12 (bookworm).

  • Build Time (R8, D8, CXX, JAVAC remote build and caching):

    results1Image showing build time of approximately 2 hour 30 minutes with R8, D8, CXX, and JAVAC using remote build and caching.

  • Build Time (Everything cached except metalava):

    result2System 1 Build Time (everything): 1 hour 27 minutes 43.496 seconds. RBE Stats: down 33.48 GB, up 14.86 GB, 90889 cache hits, 4289 remote executions, 121 local fallbacks.

System 2: 8GB RAM, 4 Cores ​

  • Specs: Intel Core i5-6500T, 8GB RAM, 48GB ZRAM, BTRFS, CachyOS

    specs2System 2 Specifications (fastfetch output): Intel Core i5-6500T CPU, 8GB RAM, 48GB ZRAM, BTRFS filesystem.

  • Build Time (R8, D8, CXX, JAVAC remote build and caching): > 5 hours

  • Build Time (Everything cached): ~ 4 hours 8 minutes

Analyzing Build Results ​

After the build completes, you can examine out/soong/rbe_metrics.txt to get detailed information about RBE usage. This file contains data about:

  • What was retrieved from the cache.
  • How long remote execution or local execution took for different build actions.
  • Which tools (R8, D8, etc.) were executed remotely.
  • Which tools failed remotely and fell back to local execution.