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Disable RavenDB storage prefetching by default - #5832
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Storage.EnablePrefetching is a server-wide-only RavenDB setting that defaults to true. ServiceControl now disables it by default: - Embedded mode (Primary and Audit): --Storage.EnablePrefetching=false is passed via ServerOptions.CommandLineArgs - Container image (servicecontrol-ravendb): RAVEN_Storage_EnablePrefetching=false is set as an image ENV, which users can still override
mauroservienti
approved these changes
Aug 28, 2026
ramonsmits
marked this pull request as ready for review
September 2, 2026 13:43
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Local docker image build tested with Podman and confirmed this in RavenDB studio server settings. |
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During load testing we notices that RavenDB does a lot of read IO. This is caused due to prefetching. We tested with disabling prefetching and index rate remained pretty much identical, ingestion rate slightly improved but read IO was reduced over 5x.
Storage.EnablePrefetching is a server-wide-only RavenDB setting that defaults to true. ServiceControl now disables it by default: