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This topic has been translated from a Chinese forum by GPT and might contain errors.Original topic: v6.1后的文档关于慢日志参数未及时更新
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username: 我是咖啡哥
The documentation for version 6.5 mentions that the enable-slow-log parameter has been changed to tidb_enable_slow_log starting from v6.1.0:
- Before v6.1.0, this feature was set using the
enable-slow-logconfiguration item.
The article on modifying TiDB configurations online has not been updated from v6.1 to the latest dev version and still uses the old variables.
The configuration items that support online modification and the corresponding TiDB system variables are as follows:
| Configuration Item | Corresponding Variable | Description |
|---|---|---|
| log.enable-slow-log | tidb_enable_slow_log | Slow log switch |
| log.slow-threshold | tidb_slow_log_threshold | Slow log threshold |
| log.expensive-threshold | tidb_expensive_query_time_threshold | Expensive query threshold |
In fact, it should be changed to:
log.enable-slow-log should be: instance.tidb_enable_slow_log
log.slow-threshold should be: instance.tidb_slow_log_threshold
log.expensive-threshold should be: instance.tidb_expensive_query_time_threshold
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