dashboards: add dashboards_default_latency_mode config option#14424
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dashboards: add dashboards_default_latency_mode config option#14424
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krajorama
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Feb 19, 2026
…rol the default value of the native/classic latency variable
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What this PR does
Dashboards have a toggle to select between native and classic latency histograms. Currently, this variable defaults to 'classic'.
When using native histograms (e.g. when converting classic -> native) this causes dashboards to show no data.
This PR adds support for overriding the default latency mode in dashboards to 'native'.
Checklist
CHANGELOG.mdupdated - the order of entries should be[CHANGE],[FEATURE],[ENHANCEMENT],[BUGFIX]. If changelog entry is not needed, please add thechangelog-not-neededlabel to the PR.about-versioning.mdupdated with experimental features.Note
Low Risk
Config-only dashboard generation changes (variable defaults + dependency bump) with no runtime server logic; main risk is unexpected Grafana/dashboard rendering differences if the new default is mis-set.
Overview
Adds a new mixin config option,
dashboards_default_latency_mode, to control the default selection for the dashboards’ native-vs-classic latency variable.Updates all dashboards that expose the latency toggle to pass this configured default via a new
dashboard-utils.libsonnethelper (latencyVariableDefault()), and bumps thegrafana-builderjsonnet dependency lock to pick up required support.Written by Cursor Bugbot for commit 8a45494. This will update automatically on new commits. Configure here.