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don't allocate the usedStatsInfo for each statements in a session #59019

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YangKeao opened this issue Jan 17, 2025 · 0 comments · May be fixed by #59021
Open

don't allocate the usedStatsInfo for each statements in a session #59019

YangKeao opened this issue Jan 17, 2025 · 0 comments · May be fixed by #59021
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type/enhancement The issue or PR belongs to an enhancement.

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YangKeao commented Jan 17, 2025 •
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Enhancement

The memory allocated by GetUsedInfo can be re-used for each statements in a single session. It can improve the performance of index usage a little (but not significantly).

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This is the CPU profile.
@YangKeao YangKeao added the type/enhancement The issue or PR belongs to an enhancement. label Jan 17, 2025
@YangKeao YangKeao linked a pull request Jan 17, 2025 that will close this issue
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stmtctx: re-use the usedStatsInfo for different statements in a single session YangKeao/tidb
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