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Type:
Improvement
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Resolution: Fixed
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Priority:
Major - P3
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Affects Version/s: None
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Component/s: None
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None
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Service Arch
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Fully Compatible
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Service Arch 2023-06-26, Service Arch 2023-07-10, Service Arch 2023-07-24, Service Arch 2023-08-07, Service Arch 2023-08-21, Service Arch 2023-09-04
SERVER-76788 elided constructors for trivially-constructible Decorations. That work was not as efficacious as it could have been because it turns out that only a few relevant decorations are truly trivially constructible.
However, many decorations are initialized to an "empty" value. It's just that doing so isn't technically trivial, so we have to run a nop constructor for them. We do know that the buffer for Decorations is memset with 0-bytes. So we could invent a small wrapper type that considers the zero-filled representation to be valid and empty, and we would have no constructor work necessary for those.
It's still unclear that doing this optimization would save initialization time.
SERVER-78390 will make this easier to work on.
- causes
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SERVER-81848 Make decoration construction eager again
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- Closed
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- depends on
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- Closed
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- is related to
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- Closed
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- related to
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- Closed
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