Open Search Serverless - How to estimate Search and Query OCUs?

Question

Hello, What would be a good way to estimate number of Search and Query OCUs required for estimating costs? For example, how many queries per second a single Search & Query OCU can handle?

Answer

Hello,
Search and Indexing OCU utilization/requirement will depend on multiple factors thus, you should test it out with your actual workload to arrive at a rough estimate.

You can monitor the **SearchOCU** and **IndexingOCU** account-level CloudWatch metrics to understand how your collections are scaling. You can analyze these metrics to determine your utilization and plug in those metrics in the [AWS Pricing Calculator](https://calculator.aws/#/addService/OpenSearchService ) to get a rough estimate.

To better understand scaling, cost and other concerns please go through the documentation available [here](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless-scaling.html ).

Open Search Serverless - How to estimate Search and Query OCUs?

Relevant content