[SERVER-42402] Performance benchmark for refining the shard key of a collection with very many chunks Created: 24/Jul/19  Updated: 11/Nov/19  Resolved: 11/Nov/19

Status: Closed
Project: Core Server
Component/s: Performance, Sharding
Affects Version/s: None
Fix Version/s: None

Type: Task Priority: Major - P3
Reporter: Jack Mulrow Assignee: Blake Oler
Resolution: Done Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Attachments: PNG File Screenshot from 2019-11-08 13-27-42.png    
Issue Links:
Gantt Dependency
has to be done after SERVER-42143 Convert refineCollectionShardKey meta... Closed
Sprint: Sharding 2019-09-09, Sharding 2019-09-23, Sharding 2019-10-07, Sharding 2019-10-21, Sharding 2019-11-04, Sharding 2019-11-18
Participants:

 Description   

From the design document

A sysperf benchmark should be made that actually refines the shard key for a collection with a huge number of chunks to uncover any unforeseen performance problems. This benchmark will serve mostly as a sanity check and should only be added as a permanent benchmark if it is found to add valuable enough performance coverage beyond the coverage from the benchmark in SERVER-42400.



 Comments   
Comment by Blake Oler [ 11/Nov/19 ]

Verified via local testing that the time taken for refining a shard key is linear with the amount of chunks. Chart is in the attached file. Closing this ticket as Done.

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