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Jan Krivanek
14ee3c90f9
* Shard plugin evaluation via executionShard tag in eval.yaml MCP-heavy plugins like dotnet-msbuild reliably exhaust the GitHub-hosted runner host after ~87 min of cumulative MCP traffic (Copilot CLI plus dotnet dnx Microsoft.AITools.BinlogMcp child processes), which has produced no dashboard data for dotnet-msbuild scheduled runs since 2026-05-20. Cutting per-runner concurrency alone was insufficient: at the default 18-way concurrency the runner OOMs in 17-30 min; at 3-way it survives longer but still hits a host-level termination at ~87 min. Two mitigations, both required: 1. Sharding (this change). The discover step reads an optional top-level 'executionShard:' string from each tests/<plugin>/<skill>/eval.yaml and groups skills by tag, emitting one matrix entry per shard so each shard runs on a fresh runner. Untagged skills fall into a 'default' bucket. Plugins where all skills resolve to a single bucket emit one entry (unchanged behavior). The validator already calls IgnoreUnmatchedProperties so no Models.cs change is needed. Shard names follow '<plugin>--shard-<tag>' so the existing 'skill-validator-results-<plugin>--*' artifact glob keeps working. 2. Per-MCP-plugin concurrency caps (already in place). When plugin.json declares mcpServers, parallelism is forced to 1x3x1 with --judge-timeout 600 to avoid acute OOM within a shard. Also adds a workflow_dispatch 'plugin' input for targeted re-runs of a single plugin, and tags 10 dotnet-msbuild eval.yamls (heavy/medium); the remaining 8 fall into 'default'. Empirically the three shards complete in parallel in ~30-40 min each, well inside the 180-min job timeout, and successfully upload dashboard data. * Address PR review: lenient shard regex and validate dispatch plugin input - executionShard regex now tolerates optional leading whitespace, so an accidentally indented key still groups correctly instead of silently falling back to the default bucket. - workflow_dispatch 'plugin' input is now validated against ^[a-zA-Z0-9._-]+$ before any Join-Path/Test-Path use, preventing path-traversal style values (e.g. '../foo') from being injected into filesystem paths.
19 lines
871 B
YAML
19 lines
871 B
YAML
executionShard: medium
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scenarios:
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- name: "Diagnose slow build for a small project"
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prompt: >-
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This .NET project's build time is unacceptable for its size.
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Systematically diagnose where build time is being spent and recommend
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targeted fixes.
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setup:
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copy_test_files: true
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assertions:
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- type: "output_matches"
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pattern: "(RunAnalyzers|analyzer|Analyzer)"
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rubric:
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- "Identified that Roslyn analyzers are consuming a disproportionate share of build time"
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- "Found analyzer packages in both Directory.Build.props (GlobalPackageReference) and the project file"
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- "Recommended using RunAnalyzers property to conditionally disable analyzers in the dev inner loop"
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- "Proposed making EnforceCodeStyleInBuild conditional on CI environment while preserving enforcement in CI pipelines"
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timeout: 360
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