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Task #79696

closed

Better index on sys_log

Added by Thomas Hohn about 7 years ago. Updated over 6 years ago.

Status:
Closed
Priority:
Should have
Assignee:
Category:
Database API (Doctrine DBAL)
Target version:
Start date:
2017-02-08
Due date:
% Done:

100%

Estimated time:
TYPO3 Version:
8
PHP Version:
7.0
Tags:
Complexity:
Sprint Focus:
Stabilization Sprint

Description

Looking at the selects performed on sys_log in the core
of TYPO3 reveals that a combination of@ tstamp, type, userid@
should give a better performance for at least 2 SQL
statements. One performing a full-table scan - the other
approximately half a full-table scan.

On installations where a few users have created a lot of entries
in sys_log the existing indexes event and user_auth will return
too many rows compared to the new combined index.


Related issues 1 (0 open1 closed)

Has duplicate TYPO3 Core - Bug #65697: [ad Bug #65634] Backend performance improvement: SQL Indexes not used in printLogErrorMessagesClosed2015-03-12

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