[SERVER-16176] Log slow checkpoints under WiredTiger Created: 16/Nov/14  Updated: 15/May/19  Resolved: 15/May/19

Status: Closed
Project: Core Server
Component/s: Diagnostics, Logging, Storage, WiredTiger
Affects Version/s: 2.8.0-rc0
Fix Version/s: 4.1.12

Type: Improvement Priority: Major - P3
Reporter: Bruce Lucas (Inactive) Assignee: Gregory Wlodarek
Resolution: Done Votes: 3
Labels: WTplaybook, neweng, wiredtiger
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Related
related to SERVER-38321 Enable verbose checkpoint logging Closed
Backwards Compatibility: Fully Compatible
Sprint: Storage NYC 2019-05-20
Participants:

 Description   

Under mmapv1, slow background flushes are logged, and this can be useful for diagnosing some performance issues. The equivalent in WiredTiger, slow checkpoints, are not logged (although summary statistics are or will be available); it would be useful to have them logged as well.



 Comments   
Comment by Githook User [ 15/May/19 ]

Author:

{'name': 'Gregory Wlodarek', 'username': 'GWlodarek', 'email': 'gregory.wlodarek@mongodb.com'}

Message: SERVER-16176 Log slow checkpoints in WiredTiger
Branch: master
https://github.com/mongodb/mongo/commit/f3eb44233050eee4da6aeaf4b4f93e9fb326a4d3

Comment by Daniel Pasette (Inactive) [ 17/Nov/14 ]

There are additional checkpoint stats now available, so that it is possible to see checkpoint timing stats over time, and come up with an avg, but they don't satisfy this exact request. For the new stats, see https://github.com/wiredtiger/wiredtiger/issues/1374.

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