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  1. Documentation
  2. DOCS-14154

[Atlas] The incorrect WiredTiger cache size for Atlas M30 or lower Clusters.

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    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: Atlas
    • Labels:
      None
    • Last comment by Customer:
      true
    • Story Points:
      1
    • Sprint:
      CET: Abba (9-15 Feb 21)

      Description

      Description

      Documentation Link - https://docs.atlas.mongodb.com/sizing-tier-selection#memory

      Hello Team,

      Recently, I have discussed the above document with one of WiredTiger experts and we strongly believe the below information is very misleading:

      WiredTiger dedicates 50% of physical RAM for the WiredTiger cache.

      Actually, this is not the case for Atlas M30 or lower Clusters based on the Cloud Provider Instance Size Specifications.

      So, we think this comment could completely confuse our customer's calculations for their working set on Atlas clusters.

      Therefore, could we please change it to something like this to avoid any misleading?

      By default, for M40 or Larger Clusters, WiredTiger dedicates 50% of physical RAM for the WiredTiger cache.

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            Assignee:
            corry.root Corry Root
            Reporter:
            seunghyoung.lee Seunghyoung Lee
            Participants:
            Last commenter:
            Corry Root Corry Root
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              Dates

              Created:
              Updated:
              Resolved:
              Days since reply:
              31 weeks, 5 days ago
              Date of 1st Reply: