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Bug #75811

closed

Backend speed decrease since 4.7

Added by Christian Toffolo almost 8 years ago. Updated almost 7 years ago.

Status:
Closed
Priority:
Must have
Assignee:
-
Category:
Performance
Target version:
-
Start date:
2016-04-20
Due date:
% Done:

0%

Estimated time:
TYPO3 Version:
7
PHP Version:
Tags:
Complexity:
Is Regression:
No
Sprint Focus:

Description

I had the opportunity to return to work with the backend of TYPO3 4.7 after a long time working with 6.2 and 7.6

I felt the 4.7 noticeably more responsive and faster while the 7.6 seemed very heavy to navigate (load times, scroll speed) compared to 4.7. So I did some tests to try to understand why 7.6 is so slow.

Using the Task Manager of Chrome on the same frame of the backend in list module with 77 tt_address records:
4.7: Ram ~20M
7.6: Ram ~75M

Using the ispector on the frames showing the 77 records:
4.7: 19 requests / 405KB transfered / DOMContentLoaded 1,69s / Load: 2,13s
7.6: 59 requests / 285KB transfered / DOMContentLoaded 2,82s / Load: 4,28s

Counting the DOM elements of the frames with document.getElementsByTagName('*').length:
4.7: 2558
7.6: 4255

It looks like that 4.7 is 200% more performing, and it also felt like that. From what little I re-used 4.7, working on that was much more pleasant.


Related issues 1 (0 open1 closed)

Related to TYPO3 Core - Bug #76581: Backend Performance FlawsClosed2016-06-10

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