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tidb-configuration-file: change the meaning of max-memory back (#3421) #3456

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Jun 2, 2020
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tidb-configuration-file: change the meaning of max-memory back (#3421) #3456

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4 changes: 2 additions & 2 deletions tidb-configuration-file.md
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Expand Up @@ -274,9 +274,9 @@ TiDB 配置文件比命令行参数支持更多的选项。你可以在 [config/

### `max-memory`

+ TiDB 最大使用内存，单位为字节
+ Prepare cache LRU 使用的最大内存限制。当 Prepare cache LRU 的内存使用超过 `performance.max-memory * (1 - prepared-plan-cache.memory-guard-ratio)` 时，会剔除 LRU 中的元素。
+ 默认值：0
+ 默认值 0 表示不受限制
+ 这个配置只有在 `prepared-plan-cache.enabled` 为 `true` 的情况才会生效。当 LRU 的 size 大于 `prepared-plan-cache.capacity` 时，也会剔除 LRU 中的元素。

### `txn-total-size-limit`

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