As part of processing incoming messages, mongos calls into appendRequiredFieldsToResponse through _processMessage (see here). Every mongos client thread spends about %5.8 of its time in this function while running a 100% read workload.
We should investigate possible modifications to this function to reduce its performance footprint on the critical execution path.
- has to be done before
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SERVER-48142 Remove allowSkippingAppendRequiredFieldsToResponse fail-point
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- Closed
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SERVER-48025 Cleanup and refactor LogicalTimeValidator
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- Closed
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