Optimize dotCount in expanding dot parser #135263
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ChrisHegarty
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:Search Foundations/Mapping
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Pinging @elastic/es-perf (Team:Performance) |
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Pinging @elastic/es-search-foundations (Team:Search Foundations) |
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Hi @ChrisHegarty, I've created a changelog YAML for you. |
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This commit optimises the implementation of
dotCount, in order to avoid costly walking each character. The implementation change is small, but defers toString::indexOf, which is backed by a vectorized JVM Hotspot intrinsic.I noticed this method showing up in cpu profiles, in some cases consuming ~2% when there are even no fields with dots! After the change this mostly drops away. For example,