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https://issues.apache.org/jira/browse/SOLR-18186?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eric Pugh resolved SOLR-18186.
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Fix Version/s: 10.1
9.11
Assignee: Eric Pugh
Resolution: Fixed
Thank you for the fix and the detailed clear issue.
> Solr heap used percentage uses committed heap instead of max heap which
> raises false alarm
> -------------------------------------------------------------------------------------------
>
> Key: SOLR-18186
> URL: https://issues.apache.org/jira/browse/SOLR-18186
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Components: Admin UI
> Affects Versions: 10.0, 9.10.1
> Reporter: Ravi Ranjan Jha
> Assignee: Eric Pugh
> Priority: Major
> Labels: pull-request-available
> Fix For: 10.1, 9.11
>
> Attachments: image-2026-04-01-15-52-26-883.png,
> image-2026-04-01-15-54-29-256.png
>
> Time Spent: 1h 20m
> Remaining Estimate: 0h
>
> Solr heap used percentage uses committed heap instead of max heap. Ideally it
> should use configured max heap size for the calculation.
> It causes unnecessary concern to the users who see a high percentage in red
> even for low heap usage.
> As an example in this image it shows the heap usage as 89% in red for 6.9 GB
> usage because committed memory is 7.6 GB but the actually configured max heap
> (-Xmx) is 12GB. This computation should use configured max heap size of 12 GB
> instead which will show the actual status of the node heap usage.
> !image-2026-04-01-15-52-26-883.png!
>
> !image-2026-04-01-15-54-29-256.png!
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