build-perf-diagnostics
Performance Analysis Methodology
- Generate a binlog:
dotnet build /bl:{} -m - Replay to diagnostic log with performance summary:
dotnet msbuild build.binlog -noconlog -fl -flp:v=diag;logfile=full.log;performancesummary - Read the performance summary (at the end of
full.log):grep "Target Performance Summary\|Task Performance Summary" -A 50 full.log - Find expensive targets and tasks: The PerformanceSummary section lists all targets/tasks sorted by cumulative time
- Check for node utilization: grep for scheduling and node messages
grep -i "node.*assigned\|building with\|scheduler" full.log | head -30 - Check analyzers: grep for analyzer timing
grep -i "analyzer.*elapsed\|Total analyzer execution time\|CompilerAnalyzerDriver" full.log
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