Reduce allocations in bsonrw.valueReader and bsoncodec.MapCodec

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    • Type: Improvement
    • Resolution: Gone away
    • Priority: Unknown
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    • Affects Version/s: None
    • Component/s: Performance
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      1. What would you like to communicate to the user about this feature? 2. Would you like the user to see examples of the syntax and/or executable code and its output? 3. Which versions of the driver/connector does this apply to?
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      In the attached memory profile of unmarshalling BSON, the bsonrw.valueReader#advanceFrame and bsoncodec.MapCodec#decodeKey methods make up about 25% of total allocations when decoding benchmark BSON documents, which seems unusually high. The exact source of the allocations is unclear, it requires more investigation. See the attached memory profile.

      memprofile-unmarshal-bson.out

        1. memprofile-unmarshal-bson.out
          6 kB
          Matt Dale

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            Reporter:
            Matt Dale
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              Created:
              Updated:
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