Issue
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Autorefresh causes performance issue.
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Static images get loaded when page autorefresh enabled.
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You are receiving the following error:
2020-12-12 07:30:27.568+0000 [id=18] WARNING hudson.Functions#configureAutoRefresh: Failed to record auto refresh status in telemetry java.lang.IllegalStateException: Expected 1 instance of jenkins.telemetry.impl.AutoRefresh but got 0 at hudson.ExtensionList.lookupSingleton(ExtensionList.java:451) at hudson.Functions.configureAutoRefresh(Functions.java:655) at sun.reflect.GeneratedMethodAccessor20.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498)
Environment
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CloudBees CI (CloudBees Core) on modern cloud platforms - Managed controller
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CloudBees CI (CloudBees Core) on modern cloud platforms - Operations Center
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CloudBees CI (CloudBees Core) on traditional platforms - Client controller
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CloudBees CI (CloudBees Core) on traditional platforms - Operations Center
Resolution
The auto refresh capability has been removed since Jenkins 2.235.1 to address performance issues. If you are running an earlier version of Jenkins and not able to upgrade, here are a few ways to workaround the caching issues:
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Install Config AutoRefresh Plugin, and configure the auto refresh time to a large number.
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Install the CloudBees Request Filter Plugin and add a new rule preventing someone from going to the autorefresh url:
./.*norefresh=true.