Document swappiness recomendations in the requirements doc
What does this MR do?
Adds a note about swappiness to the requirement docs.
Are there points in the code the reviewer needs to double check?
Why was this MR needed?
This is most important in situations where GitLab is going to be using most of the RAM available. We recommend always having some swap available, but often the kernel swappiness defaults to 60, which results in GitLab forcing the use of swap before the available memory has been exhausted.
Users installing GitLab on 4GB hardware, with a bit of swap, will likely be running into this problem, were GitLab is operating slower than it should be.
Screenshots (if relevant)
Does this MR meet the acceptance criteria?
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Changelog entry added, if necessary -
Documentation created/updated -
API support added -
Tests added for this feature/bug - Review
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Has been reviewed by UX -
Has been reviewed by Frontend -
Has been reviewed by Backend -
Has been reviewed by Database
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Conform by the merge request performance guides -
Conform by the style guides -
Squashed related commits together