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  1. Documentation
  2. DOCS-164

Create wiki page explaining disk readahead

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Details

    • Task
    • Status: Closed
    • Major - P3
    • Resolution: Fixed
    • None
    • None
    • manual
    • None
    • 32
    • true

    Description

      We have a lot of CS tickets / consulting engagements that end in needing to adjust (usually turn down) disk readahead.

      We should have some documentation around the affects of disk read-ahead, how to view and change it, and when it's a good idea to do so.

      We should also have a page "Why isn't mongo using all available RAM?" that links to this page.

      Attachments

        Issue Links

          is depended on by

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-7335 Warn at startup on machines with sub-optimal readahead settings

          • Critical - P2 - Crashes, loss of data, severe memory leak.
          • Closed
          is duplicated by

          Improvement - An improvement or enhancement to an existing feature or task. DOCS-2045 Comment on: "manual/administration/production-notes.txt"

          • Major - P3 - Major loss of function.
          • Closed
          is related to

          Task - A task that needs to be done. DOCS-4534 Description and settings for readahead and I/O Scheduler for SSD devices

          • Major - P3 - Major loss of function.
          • Closed

          Improvement - An improvement or enhancement to an existing feature or task. DOCS-3478 Comment on: "mongodb-ecosystem/platforms/amazon-ec2.txt"

          • Minor - P4 - Minor loss of function, or other problem where easy workaround is present.
          • Closed
          related to

          Bug - A problem which impairs or prevents the functions of the product. DOCS-828 conflicting recommendations for read-ahead settings on software raid

          • Major - P3 - Major loss of function.
          • Closed

          Activity

            People

              Unassigned Unassigned
              spencer@mongodb.com Spencer Brody (Inactive)
              Jess Mokrzecki Jess Mokrzecki
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              12 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved:
                6 years, 51 weeks ago