[SERVER-14081] Freelist improvements Created: 28/May/14  Updated: 11/Jul/16  Resolved: 18/Oct/14

Status: Closed
Project: Core Server
Component/s: Storage
Affects Version/s: None
Fix Version/s: 2.7.8

Type: Improvement Priority: Major - P3
Reporter: Mathias Stearn Assignee: Mathias Stearn
Resolution: Done Votes: 1
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Related
related to SERVER-2958 Freelist algorithm causes storage fra... Closed
related to SERVER-14082 Excessive freelist scanning for MaxBu... Closed
Tested
Participants:

 Description   

Ideas:

  • Extend deleted-list buckets 1MB apart from 4MB to 16MB
  • Allocate a small extent to hold extra metadata in addition to NamespaceDetails.


 Comments   
Comment by Githook User [ 18/Oct/14 ]

Author:

{u'username': u'RedBeard0531', u'name': u'Mathias Stearn', u'email': u'mathias@10gen.com'}

Message: SERVER-14081 Add more deletedList buckets to cover more sizes

This is done in a backward compatible way without orphaning any old data.
Downgrading after this patch will orphan large (>=4MB) deleted records, but
they will be usable again after upgrading. Additionally, the compact command
should not be run on a downgraded server until SERVER-15319 is resolved.
Branch: master
https://github.com/mongodb/mongo/commit/4d34532dbf749fe2c9df9ed7421db196eaf93632

Generated at Thu Feb 08 03:33:48 UTC 2024 using Jira 9.7.1#970001-sha1:2222b88b221c4928ef0de3161136cc90c8356a66.