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  1. Confluence Data Center
  2. CONFSERVER-41640

Enable string deduplication by default

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    • We collect Confluence feedback from various sources, and we evaluate what we've collected when planning our product roadmap. To understand how this piece of feedback will be reviewed, see our Implementation of New Features Policy.

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      Summary

      Java 8 update 20 has introduced an additional flag for the G1 garbage collector that enables string deduplication to lower the memory footprint of the JVM. The functionality can be enabled by adding the -XX:+UseStringDeduplication JVM flag.

      More information about this parameter can be found in the following links:

      Suggestion

      Evaluate adding this parameter by default, as it is said not to cause significant performance overhead, however it can save additional heap memory, asynchronously to GC cycles.

            [CONFSERVER-41640] Enable string deduplication by default

            Sen Geronimo made changes -
            Workflow Original: JAC Suggestion Workflow 4 [ 3575471 ] New: JAC Suggestion Workflow 3 [ 4338545 ]

            Denise Unterwurzacher [Atlassian] (Inactive) added a comment -

            For the record, we did some A/B testing on this internally on Jira DC, and found that enabling string deduplication negatively impacted performance.

            • The node with string deduplication enabled was running out of memory and having outages
            • When we removed the parameter from jira.atlassian.com, heap usage actually dropped

            As a result my team removed it from all the internal DC instances that we run.

            Denise Unterwurzacher [Atlassian] (Inactive) added a comment - For the record, we did some A/B testing on this internally on Jira DC, and found that enabling string deduplication negatively impacted performance. The node with string deduplication enabled was running out of memory and having outages When we removed the parameter from jira.atlassian.com, heap usage actually dropped As a result my team removed it from all the internal DC instances that we run.
            Katherine Yabut made changes -
            Workflow Original: JAC Suggestion Workflow 2 [ 3167593 ] New: JAC Suggestion Workflow 4 [ 3575471 ]
            Status Original: RESOLVED [ 5 ] New: Closed [ 6 ]
            Katherine Yabut made changes -
            Workflow Original: JAC Suggestion Workflow [ 3039747 ] New: JAC Suggestion Workflow 2 [ 3167593 ]
            Owen made changes -
            Workflow Original: Confluence Workflow - Public Facing v4 [ 2530847 ] New: JAC Suggestion Workflow [ 3039747 ]
            Adam Barnes (Inactive) made changes -
            Resolution New: Won't Do [ 10000 ]
            Status Original: Gathering Interest [ 11772 ] New: Resolved [ 5 ]

            Adam Barnes (Inactive) added a comment -

            Thank you for raising this suggestion.
            We regret to inform you that due to limited demand, we have no plans to implement it in the foreseeable future. In order to set expectations, we're closing this request now. Sometimes potentially valuable tickets do get closed where the Summary or Description has not caught the attention of the community. If you feel that this suggestion is valuable, consider describing in more detail or outlining how this request will help you achieve your goals. We may then be able to provide better guidance.
            For more context, check out our Community blog on our updated workflow for Suggestions
            Cheers,

            Confluence Product Management

            Adam Barnes (Inactive) added a comment - Thank you for raising this suggestion. We regret to inform you that due to limited demand, we have no plans to implement it in the foreseeable future. In order to set expectations, we're closing this request now. Sometimes potentially valuable tickets do get closed where the Summary or Description has not caught the attention of the community. If you feel that this suggestion is valuable, consider describing in more detail or outlining how this request will help you achieve your goals. We may then be able to provide better guidance. For more context, check out our Community blog on our updated workflow for Suggestions Cheers, Confluence Product Management
            SET Analytics Bot made changes -
            Support reference count New: 1
            Rachel Lin (Inactive) made changes -
            Workflow Original: Confluence Workflow - Public Facing v3 [ 2286747 ] New: Confluence Workflow - Public Facing v4 [ 2530847 ]
            Status Original: Needs Verification [ 10004 ] New: Gathering Interest [ 11772 ]
            Rachel Lin (Inactive) made changes -
            Status Original: Open [ 1 ] New: Needs Verification [ 10004 ]

              Unassigned Unassigned
              pkoczan Peter Koczan (Inactive)
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              1 Vote for this issue
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                Created:
                Updated:
                Resolved: