Ubuntu
ubuntu-ui-toolkit package

Ubuntu Components is hard on the disk and CPU when loading @gu images

Bug #1664636 reported by Albert Astals Cid
10
This bug affects 2 people
Affects Status Importance Assigned to Milestone
ubuntu-ui-toolkit (Ubuntu)
Confirmed
Undecided
Unassigned

Bug Description

 * Take the following simple example of a listview with an image.
 * run it with strace qmlscene
 * scroll the list to the bottom

I understand that some of this overhead is needed since we need to find the best @gu image for the given grid units, but doing it again and again for the same file seems a bit of overkill, maybe we could cache that?

Tags: unity8
Revision history for this message
Albert Astals Cid (aacid) wrote :

QML file to test

Revision history for this message
Albert Astals Cid (aacid) wrote :

PNG file used by the test

Revision history for this message
Albert Astals Cid (aacid) wrote :

strace output, see there's multiple blocks of

stat("/home/tsdgeos/borrame/roundface.png", 0x7ffe56341150) = -1 ENOENT (No such file or directory)
stat("/home/tsdgeos/borrame/roundface@8.png", 0x7ffe563410d0) = -1 ENOENT (No such file or directory)
open("/home/tsdgeos/borrame", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 20
open("/home/tsdgeos/borrame/roundface@2.png", O_RDONLY|O_CLOEXEC) = 20

Revision history for this message
Launchpad Janitor (janitor) wrote :

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in ubuntu-ui-toolkit (Ubuntu):
status: New → Confirmed
Cris Dywan (kalikiana)
tags: added: unity8
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