1881100 - Performance regression - Threaded view is slow to load

Status: RESOLVED FIXED

(Thunderbird :: Mail Window Front End, defect, P1)

Description

[Alessandro Castellani [:aleca]]

When selected a collapsed thread in the message list the threaded view takes up to 3 seconds to load, even with just 2 or 3 messages without attachments.

Using MozRegression I identified this to be the commit range when this issue first appeared.

• Last good revision: 35817d3faea5c30525e45b6aa8eb6ecb042bb977
• First bad revision: 81c7b19049f1fed003d43368b3006cb6dbd461d2
• Pushlog:
  https://hg.mozilla.org/comm-central/pushloghtml?fromchange=35817d3faea5c30525e45b6aa8eb6ecb042bb977&tochange=81c7b19049f1fed003d43368b3006cb6dbd461d2

And this should be the m-c range: https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=1b24ea8c2e7e02f00bd61e8cd672da76b16c42a6&tochange=d6732fe2041a1e6da2c6d9d7d02ca4e327319c91

Comment 1

[Wayne Mery (:wsmwk)]

I'm seeing slowness on Mac with Daily.

On two Windows systems with beta 124 (which should also have the bug), on one I do see slowness which is highly reproducible. Click on thread slow, click on another message immediate display, click on same thread again slow

Comment 2

[Geoff Lankow (:darktrojan)]

Attachment: Bug 1881100 - Stop the multi-message browser starting with an inactive docShell. r=aleca

The activeness of this browser never changes (I forgot), so it should never be inactive.

Comment 3

[Geoff Lankow (:darktrojan)]

Basically a dupe of bug 1881140 but I'll fix the most pressing issue quickly here, then have a closer look in that bug.

Comment 4

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/comm-central/rev/cb232f9fb81b
Stop the multi-message browser starting with an inactive docShell. r=aleca

Comment 5

[Wayne Mery (:wsmwk)]

Comment on attachment 9381114 [details]
Bug 1881100 - Stop the multi-message browser starting with an inactive docShell. r=aleca

[Triage Comment]
Approved for beta

Comment 6

[Daniel Darnell [:dandarnell]]

Thunderbird 124.0b2:
https://hg.mozilla.org/releases/comm-beta/rev/cfad82256133