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Details

Type: Bug
Resolution: Fixed
Priority: P2: Important
Fix Version/s: 6.2
Affects Version/s: 5.14.0 Beta2
Component/s: Quick: Other
Labels:
None
Environment:
emscripten 1.39.0
Firefox 70.0
Chrome 80.0.3955.4

Platform/s:

WebAssembly
Epic Link:
Threads in wasm

Description

The "Qt Quick Application - Empty"-template causes continuous CPU load if built with the multithreaded version of Qt.

Singlethreaded:

Multithreaded:

Its around 6%, that is on my 16 Thread CPU one thread that is always busy.

Attachments

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wasm-qml.png
28 kB
17 May '20 21:07
wasm-emptywidget.png
29 kB
17 May '20 21:07
wasm-empty-newdispatcher.png
40 kB
17 May '20 22:03
wasm-empty.png
31 kB
17 May '20 21:07
threaded-flamechart.png
49 kB
31 Mar '20 06:24
Screenshot_20200331_065110.png
449 kB
30 Mar '20 20:51
Screenshot_20200331_064017.png
111 kB
30 Mar '20 20:40
nonthreaded-flamechart-Screenshot_20200331_162131.png
35 kB
31 Mar '20 06:24
EmptyQuickApp_ST.png
29 kB
12 Nov '19 09:11
EmptyQuickApp_MT.png
29 kB
12 Nov '19 09:11

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Activity

People

Assignee:: Morten Sørvig

Reporter:: Marscho

PM Owner:: Veli-Pekka Heinonen

RnD Owner:: Tor Arne Vestbø

Votes:: 1 Vote for this issue

Watchers:: 4 Start watching this issue

Dates

Created:: 12 Nov '19 09:15

Updated:: 21 Jun '22 13:24

Resolved:: 21 Jun '22 13:24

Gerrit Reviews

There are no open Gerrit changes