Nope, this is the tip of both mozilla-central and comm-central. But you've given me something to go on, at least. I'll keep digging. Thanks
GL On Wednesday, 24 November 2021 at 22:56:28 UTC+13 [email protected] wrote: > On 24/11/2021 07:45, Geoff Lankow wrote: > > And why would they be read /way/ more than they should be at start-up > > (in comm/mail/base/test/performance/browser_preferences_usage.js) and > > only on Windows? We're talking >1500 times for most of them, so > > /something/ weird is going on. > > > > * bidi.direction > > * bidi.numeral > > * bidi.texttype > > * browser.display.auto_quality_min_font_size > > * dom.send_after_paint_to_content > > * image.animation_mode > > * layout.scrollbar.side > > * toolkit.scrollbox.verticalScrollDistance > > I don't know why Windows would be different from other platforms, but > these look like the prefs that are read by > nsPresContext::GetUserPreferences (see > > https://searchfox.org/mozilla-central/rev/aa8c75b83f636948f708986173965c84cae8c25f/layout/base/nsPresContext.cpp#475-525). > > > > So why is GetUserPreferences being called so many times? Its two > callsites appear to be nsPresContext::AttachPresShell and > nsPresContext::PreferenceChanged. > > OK, I have a guess: if you're looking at a Gecko version prior to 93, > which doesn't have https://bugzilla.mozilla.org/show_bug.cgi?id=1722487, > then maybe we're being repeatedly notified of > `font.internaluseonly.changed` pref-changes as fonts get initialized. > > JK > -- You received this message because you are subscribed to the Google Groups "[email protected]" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/a/mozilla.org/d/msgid/dev-platform/3a212349-1ed5-4e2d-824b-8c3f26e9608cn%40mozilla.org.
