920083 - nsAppStartup's crash tracking code causes major UI janks

Status: NEW

(Toolkit :: Startup and Profile System, defect)

Description

[Honza Bambas (:mayhemer)]

nsAppStartup::TrackStartupCrashBegin and nsAppStartup::TrackStartupCrashEnd calls nsIPrefService->SavePrefFile() on the main thread.  This is causing huge visible janks since it often happens during a page load.

No idea for a simple fix, but apparently pref service needs to be more asynchronous when saving the pref file.

Comment 1

[David Teller [:Yoric] - still alive but not very active]

I filed bug 888373 to provide an asynchronous alternative.
Could someone take a look at the proposed API and tell me whether this API could provide a suitable replacement?

Comment 2

[Matthew N. [:MattN]]

(In reply to David Rajchenbach Teller [:Yoric] from comment #1)
> I filed bug 888373 to provide an asynchronous alternative.
> Could someone take a look at the proposed API and tell me whether this API
> could provide a suitable replacement?

IIUC, the proposal there doesn't start early enough (see bug 888373 comment 10 and bug 888373 comment 30).

Comment 3

[BugBot [:suhaib / :marco/ :calixte]]

In the process of migrating remaining bugs to the new severity system, the severity for this bug cannot be automatically determined. Please retriage this bug using the new severity system.

Comment 4

[BugBot [:suhaib / :marco/ :calixte]]

The severity field is not set for this bug.
:mossop, could you have a look please?

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