Uploaded image for project: 'PuppetDB'
  1. PuppetDB
  2. PDB-1812

Some tables (value_types at least) are never analyzed

    XMLWordPrintable

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Normal
    • Resolution: Fixed
    • Affects Version/s: PDB 3.0.1
    • Fix Version/s: PDB 3.0.2
    • Component/s: None
    • Labels:
      None
    • Template:
    • Story Points:
      3
    • Sprint:
      PuppetDB 2015-07-29

      Description

      While investigating a report of very slow fact-paths responses we discovered that analyzing the value_types table provided a roughly 4x improvement for 10.5m facts and 629k fact_values. Further examination demonstrated that the table had never been analyzed. We believe this is because the autovacuum analyzer won't look at a table until it passes certain thresholds in both size and update/delete counts.

      To fix that, we're planning to add code to run a vacuum analyze (or possibly just analyze) at startup whenever at least one migration fires. In addition we'll add a new dummy migration to make sure all existing tables are analyzed.

        Attachments

          Activity

            People

            Assignee:
            Unassigned
            Reporter:
            rob.browning Rob Browning
            Votes:
            0 Vote for this issue
            Watchers:
            2 Start watching this issue

              Dates

              Created:
              Updated:
              Resolved:

                Zendesk Support