# CustomizableMetricParameters
<a name="API_CustomizableMetricParameters"></a>

 Defines the various metric parameters that can be customized, such as threshold and headroom. 

## Contents
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 ** headroom **   <a name="computeoptimizer-Type-CustomizableMetricParameters-headroom"></a>
 The headroom value in percentage used for the specified metric parameter.   
The following lists the valid values for CPU and memory utilization.  
+ CPU utilization: `PERCENT_30 | PERCENT_20 | PERCENT_0` 
+ Memory utilization: `PERCENT_30 | PERCENT_20 | PERCENT_10` 
Type: String  
Valid Values: `PERCENT_30 | PERCENT_20 | PERCENT_10 | PERCENT_0`   
Required: No

 ** threshold **   <a name="computeoptimizer-Type-CustomizableMetricParameters-threshold"></a>
 The threshold value used for the specified metric parameter.   
You can only specify the threshold value for CPU utilization.
Type: String  
Valid Values: `P90 | P95 | P99_5`   
Required: No

## See Also
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For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/compute-optimizer-2019-11-01/CustomizableMetricParameters) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/compute-optimizer-2019-11-01/CustomizableMetricParameters) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/compute-optimizer-2019-11-01/CustomizableMetricParameters)