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  1. Jackrabbit Oak
  2. OAK-5655

TarMK: Analyse locality of reference

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    • Task
    • Status: Open
    • Major
    • Resolution: Unresolved
    • None
    • None
    • segment-tar

    Description

      We need to better understand the locality aspects of content stored in TarMK:

      • How is related content spread over segments?
      • What content do we consider related?
      • How does locality of related content develop over time when changes are applied?
      • What changes do we consider typical?
      • What is the impact of compaction on locality?
      • What is the impact of the deduplication caches on locality (during normal operation and during compaction)?
      • How good are checkpoints deduplicated? Can we monitor this online?
      • ...

      Attachments

        1. compaction-time-vs.reposize.png
          75 kB
          Michael Dürig
        2. compaction-time-vs-reposize.m
          0.3 kB
          Michael Dürig
        3. data00053a.tar-reads.png
          45 kB
          Michael Dürig
        4. offrc.jfr
          4.07 MB
          Michael Dürig
        5. segment-per-path.png
          6 kB
          Michael Dürig
        6. segment-per-path-compacted.png
          5 kB
          Michael Dürig
        7. segment-per-path-compacted-nocache.png
          5 kB
          Michael Dürig
        8. segment-per-path-compacted-nostringcache.png
          5 kB
          Michael Dürig
        9. segment-reads.png
          223 kB
          Michael Dürig

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              Unassigned Unassigned
              mduerig Michael Dürig
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                Created:
                Updated: