--- title: Performance Analyzer tags: Open distro description: View the slide with "Slide Mode". --- # Performance Analyzer > Performance Analyzer is an agent and REST API that allows you to query numerous performance metrics for your cluster, including aggregations of those metrics, independent of the Java Virtual Machine (JVM). <font color=blue>PerfTop</font> is the default command line interface (CLI) for displaying those metrics. > >To download PerfTop, see [Download](https://opendistro.github.io/for-elasticsearch/downloads.html) on the Open Distro for Elasticsearch website. > >You can also install it using npm: ```bash= npm install -g @aws/opendistro-for-elasticsearch-perftop ```