bazel-resource-scheduling Specification

Categories:

Purpose

Reduce resource contention from independent Bazel builds on host-bot through conservative per-invocation scheduling defaults.

Requirements

Requirement: Reduced per-invocation scheduling defaults

The managed user Bazel configuration SHALL set four concurrent jobs and a local CPU scheduling budget of HOST_CPUS*0.25 for builds and tests. These defaults SHALL NOT be described as an aggregate host-wide resource cap.

Scenario: Build or test reads the managed defaults

  • WHEN a new Bazel build or test invocation loads the managed user configuration without overriding its resource settings
  • THEN it receives --jobs=4 and --local_resources=cpu=HOST_CPUS*0.25

Scenario: Independent workspaces build concurrently

  • WHEN separate Bazel servers build in multiple workspaces
  • THEN each receives its own scheduling budget, without sharing an aggregate limit