Treewalker: Improve performance by avoiding memory allocations #309
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Previously the treewalker would unnecessary call "to_h" on each Protobuf message in the parsetree, in order to get the field names to walk. This caused unnecessary copies of the message, increasing memory usage and slowing down the tree walk. Instead, use the Protobuf descriptor and its field descriptors to walk the message. Additionally this also optimizes the case where a block with 1 argument is used for the tree walk, since we don't need to handle the location, avoiding unnecessary copies of the field name string. Together these changes result in about a 5x speed up in some use cases.
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Co-authored-by: Olle Jonsson <[email protected]>
msakrejda
approved these changes
Jan 27, 2024
seanlinsley
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Jan 29, 2024
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Previously the treewalker would unnecessary call "to_h" on each Protobuf message in the parsetree, in order to get the field names to walk. This caused unnecessary copies of the message, increasing memory usage and slowing down the tree walk. Instead, use the Protobuf descriptor and its field descriptors to walk the message.
Additionally this also optimizes the case where a block with 1 argument is used for the tree walk, since we don't need to handle the location, avoiding unnecessary copies of the field name string.
Together these changes result in about a 5x speed up in some use cases.