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https://issues.apache.org/jira/browse/SOLR-18159?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18066406#comment-18066406
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ASF subversion and git services commented on SOLR-18159:
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Commit 41c8edefe84275df083685098cec07bf74fae054 in solr's branch
refs/heads/branch_10x from Jan Høydahl
[ https://gitbox.apache.org/repos/asf?p=solr.git;h=41c8edefe84 ]
SOLR-18159 Add metrics for system memory (#4209)
(cherry picked from commit c8cf0db17243964bad833f769f0d7ac49497d507)
> Add back some system memory metrics
> -----------------------------------
>
> Key: SOLR-18159
> URL: https://issues.apache.org/jira/browse/SOLR-18159
> Project: Solr
> Issue Type: Improvement
> Components: metrics
> Reporter: Jan Høydahl
> Assignee: Jan Høydahl
> Priority: Major
> Labels: pull-request-available
> Fix For: 9.1
>
> Time Spent: 2h 40m
> Remaining Estimate: 0h
>
> When moving from micrometer to otel for metrics, we lost metrics for system
> memory. It is a useful metric and we should re-introduce total and free
> values.
> Since java do not (yet) have a full public api for this, we can use
> com.sun.management.OperatingSystemMXBean which is supported on the most used
> JVMs. On unsupported JVMs the metric should not be reported.
>
> Naming suggestion: jvm_system_memory_total_bytes and
> jvm_system_memory_free_bytes
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