Refine slow log description #18366
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Refine slow log description #18366
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system-variables.md
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| @@ -5264,7 +5264,7 @@ Query OK, 0 rows affected, 1 warning (0.00 sec) | |||
| - Default value: `300` | |||
| - Range: `[-1, 9223372036854775807]` | |||
| - Unit: Milliseconds | |||
| - This variable is used to output the threshold value of the time consumed by the slow log. When the time consumed by a query is larger than this value, this query is considered as a slow log and its log is output to the slow query log. | |||
| - This variable outputs the threshold value of the time consumed by the slow log, and is set to 300 milliseconds by default. When the time consumed by a query is larger than this value, this query is considered as a slow query log and its log is output to the slow query log. Note that when the output level of [`log.level`](https://docs.pingcap.com/tidb/dev/tidb-configuration-file#level) is `"debug"`, all queries are recorded in the slow query log, regardless of the setting of this variable. | |||
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Note: The absolute URL is to pass the TiDB Cloud link check. And I'll update the version in URL for cherry picked PRs.
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Refine slow log description to make it more clear and complete
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