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High RSS memory usage due to MADV settings

Serverless

Elastic Cloud Serverless projects are autoscaled environments, fully managed by Elastic and available on Elastic Cloud.

Availability

  • Generally available

    This functionality is generally available and ready for production usage.

Serverless interfaces and procedures might differ from classic Elastic Stack deployments.

Stack

The Elastic Stack includes Elastic's core products such as Elasticsearch, Kibana, Logstash, and Beats.

Availability

  • Generally available

    This functionality is generally available and ready for production usage.

Unless stated otherwise on the page, this functionality is available when your Elastic Stack is deployed on Elastic Cloud Hosted, Elastic Cloud Enterprise, Elastic Cloud on Kubernetes, and self-managed environments.

This documentation corresponds to the latest patch available for each minor version. If you're not using the latest patch, check the release notes for changes.

In versions of Filebeat prior to 7.10.2, the go runtime defaults to MADV_FREE by default. In some cases, this can lead to high RSS memory usage while the kernel waits to reclaim any pages assigned to Filebeat. On versions prior to 7.10.2, set the GODEBUG="madvdontneed=1" environment variable if you run into RSS usage issues.