[DOCS-12986] Add information about Connection Memory Consumption Created: 27/Aug/19  Updated: 30/Oct/23  Due: 11/Dec/20  Resolved: 29/Aug/22

Status: Closed
Project: Documentation
Component/s: manual, Server
Affects Version/s: None
Fix Version/s: Server_Docs_20231030

Type: Improvement Priority: Major - P3
Reporter: Renato Riccio Assignee: Jeffrey Allen
Resolution: Fixed Votes: 1
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Participants:
Days since reply: 1 year, 22 weeks, 1 day ago
Epic Link: DOCSP-11701

 Description   

Description

In MongoDB 4.2 the section relative the memory consumption of a connection has been removed link to 4.0 doc
We should add it back

Scope of changes

  • Investigate what the wiredtiger memory usage is
  • Document for 4.2
  • backport for 4.0 -> 3.6, splitting the linked section up into MMAPv1 vs Wired Tiger specific

While we are here, it might be worth confirming w/ storage as to whether the information documented <=4.0 is accurate.

Impact to Other Docs

MVP (Work and Date)

Resources (Scope or Design Docs, Invision, etc.)



 Comments   
Comment by Githook User [ 06/Sep/22 ]

Author:

{'name': 'Jeff Allen', 'email': 'jeffrey.allen@10gen.com', 'username': 'jeff-allen-mongo'}

Message: (DOCS-12986): Add FAQ item for connection memory allocation (#1650)

  • (DOCS-12986): Add FAQ item for connection memory allocation
  • move faq item
  • move faq item
  • fix numeric formatting
  • wording
  • updates per review
  • formatting
  • remove extra bullet
  • updates
  • wording
  • wording
  • tweak
  • wording
  • wording
  • wording
Comment by Githook User [ 29/Aug/22 ]

Author:

{'name': 'Jeff Allen', 'email': 'jeffrey.allen@10gen.com', 'username': 'jeff-allen-mongo'}

Message: (DOCS-12986): Add FAQ item for connection memory allocation (#1650)

  • (DOCS-12986): Add FAQ item for connection memory allocation
  • move faq item
  • move faq item
  • fix numeric formatting
  • wording
  • updates per review
  • formatting
  • remove extra bullet
  • updates
  • wording
  • wording
  • tweak
  • wording
  • wording
  • wording
Comment by Githook User [ 29/Aug/22 ]

Author:

{'name': 'Jeff Allen', 'email': 'jeffrey.allen@10gen.com', 'username': 'jeff-allen-mongo'}

Message: (DOCS-12986): Add FAQ item for connection memory allocation (#1650)

  • (DOCS-12986): Add FAQ item for connection memory allocation
  • move faq item
  • move faq item
  • fix numeric formatting
  • wording
  • updates per review
  • formatting
  • remove extra bullet
  • updates
  • wording
  • wording
  • tweak
  • wording
  • wording
  • wording
Comment by Stennie Steneker (Inactive) [ 04/Dec/20 ]

I was surprised to find the memory per connection thread information (lesser of default system stack size or 1MB) has been removed from the documentation.

The overall scope of the original FAQ topic ("How do I calculate how much RAM I need for my application?") would be great (but lengthy) to document thoroughly. It would be helpful to add a more narrowly scoped "How much memory is allocated per connection" FAQ item based on the information that was removed.

Relevant community discussion: Memory allocated per connection.

Regards,
Stennie

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