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Change tidb_memory_usage_alarm_ratio scope to instance #5988

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Jul 16, 2021
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Change tidb_memory_usage_alarm_ratio scope to instance #5988

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f1620d8
Change tidb_memory_usage_alarm_ratio scope to instance
Jul 16, 2021
9984461
Update system-variables.md
TomShawn Jul 16, 2021
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2 changes: 1 addition & 1 deletion system-variables.md
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Expand Up @@ -945,7 +945,7 @@ For a system upgraded to v5.0 from an earlier version, if you have not modified

### tidb_memory_usage_alarm_ratio

- Scope: SESSION
- Scope: INSTANCE
- Default value: `0.8`
- TiDB triggers an alarm when the percentage of the memory it takes exceeds a certain threshold. For the detailed usage description of this feature, see [`memory-usage-alarm-ratio`](/tidb-configuration-file.md#memory-usage-alarm-ratio-new-in-v409).
- You can set the initial value of this variable by configuring [`memory-usage-alarm-ratio`](/tidb-configuration-file.md#memory-usage-alarm-ratio-new-in-v409).
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