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Enable prefix bloom filter by default #1012

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Sep 27, 2021
Merged

Enable prefix bloom filter by default #1012

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4 changes: 2 additions & 2 deletions docs-2.0/5.configurations-and-logs/1.configurations/4.storage-config.md
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Expand Up @@ -85,8 +85,8 @@ Storage服务提供了两份初始配置文件`nebula-storaged.conf.default`和`
|`rocksdb_compression_per_level` | - | 为不同级别设置不同的压缩算法。 |
|`enable_rocksdb_statistics` | `false` | 是否启用RocksDB的数据统计。 |
|`rocksdb_stats_level` | `kExceptHistogramOrTimers` | RocksDB的数据统计级别。可选值为`kExceptHistogramOrTimers`（禁用计时器统计，跳过柱状图统计）、`kExceptTimers`（跳过计时器统计）、`kExceptDetailedTimers`（收集除互斥锁和压缩花费时间之外的所有统计数据）、`kExceptTimeForMutex`收集除互斥锁花费时间之外的所有统计数据）和`kAll`（收集所有统计数据）。 |
|`enable_rocksdb_prefix_filtering` | `false` | 是否启用prefix bloom filter (内存充裕时可以打开，提升图遍历速度)。 |
|`enable_rocksdb_whole_key_filtering` | `true` | 是否启用whole key bloom filter。 |
|`enable_rocksdb_prefix_filtering` | `true` | 是否启用prefix bloom filter，启用时可以提升图遍历速度，但是会增加内存消耗。 |
|`enable_rocksdb_whole_key_filtering` | `false` | 是否启用whole key bloom filter。 |
|`rocksdb_filtering_prefix_length` | `12` | 每个key的prefix长度。可选值为`12`（分片ID+点ID）和`16`（分片ID+点ID+TagID/Edge typeID）。单位：字节。 |
|`enable_partitioned_index_filter`|- |设置为`true`可以降低bloom过滤器占用的内存大小，但是在某些随机寻道（random-seek）的情况下，可能会降低读取性能。|

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