Bug 47985 – High browser CPU usage on the search page of the users/user module

Bug 47985 - High browser CPU usage on the search page of the users/user module


Summary:	High browser CPU usage on the search page of the users/user module

Status:	CLOSED FIXED

Product:	UCS
Classification:	Unclassified
Component:	UMC - Users
Version:	UCS 4.3
Hardware:	Other Linux

Importance:	P5 normal (vote)
Target Milestone:	UCS 4.4-0-errata
Assigned To:	Johannes Keiser
QA Contact:	Dirk Wiesenthal

URL:
Keywords:

Depends on:
Blocks:
	Show dependency tree / graph

Reported:	2018-10-15 14:59 CEST by Johannes Keiser
Modified:	2019-07-01 14:45 CEST (History)
CC List:	0 users

See Also:	49768
What kind of report is it?:	Bug Report
What type of bug is this?:	2: Improvement: Would be a product improvement
Who will be affected by this bug?:	1: Will affect a very few installed domains
How will those affected feel about the bug?:	1: Nuisance – not a big deal but noticeable
User Pain:	0.011
Enterprise Customer affected?:
School Customer affected?:
ISV affected?:
Waiting Support:
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Bug group (optional):	UCS Performance
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Description Johannes Keiser

2018-10-15 14:59:56 CEST

For the users/user module the detail page is pre-created so that opening a user object is faster. But before a user object is loaded the detail page shows a standby animation. This will cause a standby animation to constantly run in the background when the search page of the user/user module is open. (The tab of the users/user module does not even have to be selected. The users/user module just has to have the search page selected.)

The StandbyWidget is not really performant and performs dom manipulations on a high frequency which causes the CPU usage of the browser to rise.

Comment 1 Johannes Keiser

2019-03-15 13:39:15 CET

ef620154eb Bug #47985: YAML
dd68cd19cd Bug #47985: Merge branch 'jkeiser/4.4-0/udm_users_cpu__47985' into 4.4-0
56d96d3426 Bug #47985: YAML
29ca2af511 Bug #47985: debian changelog
b093baf802 Bug #47985: prevent high cpu usage in users/user module

Successful build
Package: univention-management-console-module-udm
Version: 9.0.11-5A~4.4.0.201903151328

Comment 2 Johannes Keiser

2019-03-21 13:27:17 CET

90ab2b5eae Bug #47985: YAML
3521e6b6ab Bug #47985: debian changelog
34d5fe8bde Bug #47985: prevent hight cpu usage in users/user module

Comment 3 Dirk Wiesenthal

2019-03-26 14:55:59 CET

I cannot reproduce the high browser usage. But it does not break anything, the spinner is gone from the DOM and users reported that it actually improved for them. So VERIFIED

Comment 4 Arvid Requate

2019-03-27 13:29:23 CET

<http://errata.software-univention.de/ucs/4.4/27.html>