Amazon Redshift
Cluster Management Guide

Viewing Concurrency Scaling Data

By using concurrency scaling metrics in Amazon Redshift, you can do the following:

  • View concurrency scaling activity in concurrency scaling clusters. This can tell you if concurrency scaling is limited by the max_concurrency_scaling_clusters. If so, you can choose to increase the max_concurrency_scaling_clusters in the DB parameter.

  • View the total usage of concurrency scaling summed across all concurrency scaling clusters.

To view concurrency scaling data

  1. Sign in to the AWS Management Console and open the Amazon Redshift console at

  2. In the navigation pane, choose Clusters.

  3. Choose the cluster for which you want to view concurrency scaling data.

  4. Choose the Database Performance tab.

    By default, the performance view displays concurrency scaling data over the past hour. If you need to fine-tune the view, you have filters that you can use to change the scope of the data.

Concurrency Scaling Graphs

The Amazon Redshift console displays the following graphs.

  • Concurrency Scaling Activity – Shows the number of active concurrency scaling clusters for the chosen time range.

  • Queued vs. Running Queries – Compares queued and running queries of concurrency scaling clusters configured during the chosen time range.

  • Concurrency Scaling Usage in Minutes (Sum) – Shows the total usage of concurrency scaling clusters for the chosen time range.