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Reduce VariableWidthData expansion factor #25214

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Description

Reduces per-chunk growth rate for VariableWidthData allocations to 1.5x from 2x to reduce the initial rate of retained memory growth in data structures.

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(x) This is not user-visible or is docs only, and no release notes are required.
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Reduces per-chunk growth rate for VariableWidthData allocations to 1.5x
from 2x to reduce the initial rate of retained memory growth in data
structures.
@pettyjamesm pettyjamesm requested a review from dain March 4, 2025 14:52
@cla-bot cla-bot bot added the cla-signed label Mar 4, 2025
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