[MCOL-507] More performance improvements to ExeMgr Created: 2017-01-16  Updated: 2017-12-01  Resolved: 2017-01-16

Status: Closed
Project: MariaDB ColumnStore
Component/s: ExeMgr
Affects Version/s: None
Fix Version/s: 1.1.0

Type: New Feature Priority: Minor
Reporter: Andrew Hutchings (Inactive) Assignee: David Hall (Inactive)
Resolution: Fixed Votes: 0
Labels: None

Issue Links:
Relates
relates to MCOL-505 Performance improvements to ExeMgr Closed
Sprint: 2017-01

 Description   

This ticket is to track the further performance improvement work I have made to ExeMgr

 Comments   
Comment by Andrew Hutchings (Inactive) [ 2017-01-16 ]

This patch shows the following performance differences over MCOL-505 on my single server setup:

  • First query after client connection reduced from 0.18 secs to 0.10 secs
  • Time of first I_S.columnstore_columns query in a connection halved
  • Time of subsequent I_S.columnstore_columns queries reduced to < 0.2 seconds

Regression suite passes. Targeting 1.1 only since it is a large change. The pull request contains details of the code level changes.

Comment by David Hall (Inactive) [ 2017-01-16 ]

Regression tests pass. There are no further tests to be done.

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