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Cross-shard sharing of IO capacity is effectively IOPS-based, not tokens-based #2615

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xemul opened this issue Jan 10, 2025 · 1 comment
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Cross-shard sharing of IO capacity is effectively IOPS-based, not tokens-based #2615

xemul opened this issue Jan 10, 2025 · 1 comment

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@xemul
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xemul commented Jan 10, 2025

When disk is saturated, shards end up queuing one request at a time to shared token bucket via pending facility. As a result shards start to share the tokens in perquest-by-request manner

refs: #2596
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