# Using your rightsizing recommendations
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You can see the following top-level key performance indicators (KPIs) in your rightsizing recommendations:
+ **Optimization opportunities** – The number of recommendations available based on your resources and usage
+ **Estimated monthly savings** – The sum of the projected monthly savings associated with each of the recommendations provided
+ **Estimated savings (%)** – The available savings relative to the direct instance costs (On-Demand) associated with the instances in the recommendation list

**To filter your rightsizing recommendations**

1. Open the Billing and Cost Management console at [https://console.aws.amazon.com/costmanagement/](https://console.aws.amazon.com/costmanagement/).

1. In the navigation pane, under **Legacy pages**, choose **Rightsizing**.

1. On the **Rightsizing recommendations** page, under **Recommendation parameters**, filter your recommendations by selecting any or all of the following check boxes:
   + Idle instances
   + Underutilized instances
   + Include Savings Plans and Reserved Instances

1. Under **Findings**, use the search bar to filter by the following parameters:
   + Account ID (option available from the management account)
   + Region
   + Cost allocation tag

**To view your rightsizing recommendations details**

1. Open the Billing and Cost Management console at [https://console.aws.amazon.com/costmanagement/](https://console.aws.amazon.com/costmanagement/).

1. In the navigation pane, under **Legacy pages**, choose **Rightsizing**.

1. On the **Rightsizing recommendations** page, under **Findings**, choose a recommendation to view the details.

## Enhancing your recommendations using CloudWatch metrics
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We can examine your memory utilization if you enable your Amazon CloudWatch agent.

To enable memory utilization, see [Installing the CloudWatch Agent](https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/install-CloudWatch-Agent-on-EC2-Instance.html).

**Important**  
When you create a CloudWatch configuration file, use the default namespace and default names for the collected metrics.  
For **InstanceID**, choose `append_Dimension`. Do not add additional dimensions for individual memory or disk metrics. Disk utilization is currently not examined.  
For Linux instances, choose `mem_used_percent` as your metric for your CloudWatch agent to collect. For Windows instances, choose `"% Committed Bytes In Use"`.

For more information about the CloudWatch agent, see [Collecting Metrics and Logs from Amazon EC2 Instances and On-Premises Servers with the CloudWatch Agent](https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/Install-CloudWatch-Agent.html) in the *Amazon CloudWatch User Guide*.