Change SolutionState._lazyFilePathToRelatedDocumentIds to a ConcurrentDictionary #77959
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…tDictionary Measured changing lazyFilePathToRelatedDocumentIds by the following approaches during a load of Roslyn.sln: 1) ImmutableDictionary (current) 2) Standard Dictionary with a lock around it's usage 3) ConcurrentDictionary Stopwatch time spent in GetDocumentIdsWithFilePath (avg of 3 runs) (lower is better) 1: 8.6 sec 2: 9.7 sec 3: 7.8 sec ETL % of CPU time in GetDocumentIdsWithFilePath spent in ComputeDocumentIdsWithFilePath (higher is better) 1: 96.6% 2: 80.3% 3: 97.5% ETL % of allocations in GetDocumentIdsWithFilePath from ComputeDocumentIdsWithFilePath (higher is better) 1: 26.1% 2: 87.2% 3: 50.0%
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JoeRobich
approved these changes
Apr 1, 2025
CyrusNajmabadi
approved these changes
Apr 1, 2025
This was referenced Apr 19, 2025
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Measured changing lazyFilePathToRelatedDocumentIds by the following approaches during a load of Roslyn.sln:
Stopwatch time spent in GetDocumentIdsWithFilePath (avg of 3 runs) (lower is better)
ETL % of CPU time in GetDocumentIdsWithFilePath spent in ComputeDocumentIdsWithFilePath (higher is better)
ETL % of allocations in GetDocumentIdsWithFilePath from ComputeDocumentIdsWithFilePath (higher is better)