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GODRIVER-4023 Fix CSOT spec test failures on 9.0+ sharded. - #2504

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GODRIVER-4023 Fix CSOT spec test failures on 9.0+ sharded.#2504
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Summary

Background & Motivation

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mongodb-drivers-pr-bot Bot commented Jul 23, 2026

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🧪 Performance Results

Commit SHA: 5799103

The following benchmark tests for version 6a69ad98977cb90007f39369 had statistically significant changes (i.e., |z-score| > 1.96):

Benchmark Measurement % Change Patch Value Stable Region H-Score Z-Score
BenchmarkBSONFlatDocumentEncoding total_time_seconds 5.9465 1.2631 Avg: 1.1922
Med: 1.1925
Stdev: 0.0179
0.8628 3.9683
BenchmarkBSONFlatDocumentEncoding ops_per_second_med -5.4655 76511.0941 Avg: 80934.5545
Med: 81076.6986
Stdev: 1651.6220
0.7911 -2.6783
BenchmarkSingleFindOneByID ops_per_second_med -5.4248 4023.6753 Avg: 4254.4719
Med: 4249.6499
Stdev: 112.7547
0.7419 -2.0469
BenchmarkBSONFlatDocumentEncoding ns_per_op 5.1931 14582.0000 Avg: 13862.1198
Med: 13830.0000
Stdev: 351.4953
0.7380 2.0481
BenchmarkBSONDeepDocumentEncoding total_time_seconds 2.7475 1.2263 Avg: 1.1935
Med: 1.1940
Stdev: 0.0094
0.8518 3.4790
BenchmarkBSONFullDocumentEncoding total_time_seconds 1.4287 1.2118 Avg: 1.1947
Med: 1.1947
Stdev: 0.0084
0.7327 2.0416

For a comprehensive view of all microbenchmark results for this PR's commit, please check out the Evergreen perf task for this patch.

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API Change Report

No changes found!

@matthewdale
matthewdale force-pushed the godriver4023-advance-cluster branch from c7accc5 to 24b8128 Compare July 29, 2026 07:23
@matthewdale
matthewdale force-pushed the godriver4023-advance-cluster branch from 24b8128 to 5799103 Compare July 29, 2026 07:36
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