@Heinrich, if you'd like to try again with the fix, it should be offered
if you select "Update to the new installer" on the "Installer update
available" screen on plucky ISOs.
The fix is available starting with this revision:
25.04-devel+git177.b57e031d
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** Changed in: subiquity (Ubuntu)
Status: In Progress => Fix Committed
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Title:
Partition manager navigation terribly slow
To manage notif
I also opened a PR against upstream urwid to speed things up a bit:
https://github.com/urwid/urwid/pull/991
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Title:
Partition manager navigation
Probably not the cleanest way to address the issue but this seems to
address the performance regression for now:
https://github.com/canonical/subiquity/pull/2161
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** Attachment added: "urwid-578717 data (good)"
https://bugs.launchpad.net/ubuntu/+source/subiquity/+bug/2089681/+attachment/5858320/+files/good.log
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** Attachment added: "urwid-0a664e - data (bad)"
https://bugs.launchpad.net/ubuntu/+source/subiquity/+bug/2089681/+attachment/5858319/+files/bad.log
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I did a dichotomy and this commit seems to be the culprit:
https://github.com/urwid/urwid/commit/0a664e1afd9653baec2f2fc4331abd59a5a42ded
** Changed in: subiquity (Ubuntu)
Status: New => In Progress
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@xypron, I measured on amd64 since it is what I have access to. I don't
think the performance regression is specific to an architecture, but
obviously the slower the platform, the easier it is to feel the impact.
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Hello Olivier,
on which architecture did you measure?
Best regards
Heinrich
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Title:
Partition manager navigation terribly slow
To manage noti
** Attachment added: "stats-core24.log"
https://bugs.launchpad.net/ubuntu/+source/subiquity/+bug/2089681/+attachment/5858313/+files/stats-core24.log
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I did some profiling using Subiquity's dry-run feature in two LXD
environments. One with jammy (i.e., core22) and one with noble (i.e.,
core24).
In both environments, I did the following steps
* navigate to the "guided storage configuration" screen
* leave the default options checked i.e.
* (x)
** Attachment added: "stats-core22.log"
https://bugs.launchpad.net/ubuntu/+source/subiquity/+bug/2089681/+attachment/5858312/+files/stats-core22.log
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** Changed in: subiquity (Ubuntu)
Assignee: (unassigned) => Olivier Gayot (ogayot)
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Title:
Partition manager navigation terribly slow
To ma
** Changed in: subiquity (Ubuntu)
Milestone: None => ubuntu-25.04
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Title:
Partition manager navigation terribly slow
To manage notifications
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