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v7.5.1: tikv configuration doc: add gc thread number (#16564) #16632

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v7.5.1: tikv configuration doc: add gc thread number (#16564) #16632

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This is an automated cherry-pick of #16564
Oreoxmt Feb 29, 2024
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2 changes: 1 addition & 1 deletion releases/release-7.6.0.md
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Expand Up @@ -284,7 +284,7 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v7.6/quick-start-with-
| TiKV | [`blob-file-compression`](/tikv-configuration-file.md#blob-file-compression) | Modified | The algorithm used for compressing values in Titan, which takes value as the unit. Starting from TiDB v7.6.0, the default compression algorithm is `zstd`. |
| TiKV | [`rocksdb.defaultcf.titan.min-blob-size`](/tikv-configuration-file.md#min-blob-size) | Modified | Starting from TiDB v7.6.0, the default value for new clusters is `32KB`. For existing clusters upgrading to v7.6.0, the default value `1KB` remains unchanged. |
| TiKV | [`rocksdb.titan.enabled`](/tikv-configuration-file.md#enabled) | Modified | Enables or disables Titan. For v7.5.0 and earlier versions, the default value is `false`. Starting from v7.6.0, the default value is `true` for only new clusters. Existing clusters upgraded to v7.6.0 or later versions will retain the original configuration. |
| TiKV | [`gc.num-threads`](/tikv-configuration-file.md#num-threads-new-in-v658-and-v760) | Newly added | When `enable-compaction-filter` is set to `false`, this parameter controls the number of GC threads. The default value is `1`. |
| TiKV | [`gc.num-threads`](/tikv-configuration-file.md#num-threads-new-in-v658v751-and-v760) | Newly added | When `enable-compaction-filter` is set to `false`, this parameter controls the number of GC threads. The default value is `1`. |
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| TiKV | [`raftstore.periodic-full-compact-start-times`](/tikv-configuration-file.md#periodic-full-compact-start-times-new-in-v760) | Newly added | Sets the specific times that TiKV initiates periodic full compaction. The default value `[]` means periodic full compaction is disabled. |
| TiKV | [`raftstore.periodic-full-compact-start-max-cpu`](/tikv-configuration-file.md#periodic-full-compact-start-max-cpu-new-in-v760) | Newly added | Limits the maximum CPU usage rate for TiKV periodic full compaction. The default value is `0.1`. |
| TiKV | [`zstd-dict-size`](/tikv-configuration-file.md#zstd-dict-size) | Newly added | Specifies the `zstd` dictionary compression size. The default value is `"0KB"`, which means to disable the `zstd` dictionary compression. |
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2 changes: 1 addition & 1 deletion tikv-configuration-file.md
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Expand Up @@ -2065,7 +2065,7 @@ Configuration items related to TiDB Lightning import and BR restore.
+ The garbage ratio threshold to trigger GC.
+ Default value: `1.1`

### `num-threads` <span class="version-mark">New in v6.5.8 and v7.6.0</span>
### `num-threads` <span class="version-mark">New in v6.5.8, v7.5.1, and v7.6.0</span>

+ The number of GC threads when `enable-compaction-filter` is `false`.
+ Default value: `1`
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