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control+tab UI is generally very slow

RESOLVED INCOMPLETE

Status

()

Firefox
Tabbed Browser
RESOLVED INCOMPLETE
9 years ago
2 years ago

People

(Reporter: dietrich, Unassigned)

Tracking

(Blocks: 1 bug)

3.6 Branch
x86
Windows 7
Points:
---

Firefox Tracking Flags

(Not tracked)

Details

(Reporter)

Description

9 years ago
there are three things to fix here

1. the panel loads slowly, sometimes a full second before it shows
2. the thumbnails load slowly - sometimes i get empty panel, then thumbnails fill in
3. the panel leaves slowly, sometimes stuck there for half-second
(In reply to comment #0)
> there are three things to fix here
> 
> 1. the panel loads slowly, sometimes a full second before it shows

Maybe you're seeing the intentional effect of bug 498272?

> 2. the thumbnails load slowly - sometimes i get empty panel, then thumbnails
> fill in
> 3. the panel leaves slowly, sometimes stuck there for half-second

I don't think I'm seeing this on Windows and Linux. Could this be a Mac-specific regression?
Keywords: qawanted

Updated

9 years ago
Blocks: 505404
(Reporter)

Comment 2

9 years ago
(In reply to comment #1)
> > 1. the panel loads slowly, sometimes a full second before it shows
> 
> Maybe you're seeing the intentional effect of bug 498272?

If so, we need to tune it. It feels *really* heavy. I'd describe it as laggy actually.

> > 2. the thumbnails load slowly - sometimes i get empty panel, then thumbnails
> > fill in
> > 3. the panel leaves slowly, sometimes stuck there for half-second
> 
> I don't think I'm seeing this on Windows and Linux. Could this be a
> Mac-specific regression?

I'm on Win7.

Note that these perf issues are not 100% of the time I use it. However, it's often enough to be pretty serious bug IMO.
(In reply to comment #2)
> (In reply to comment #1)
> > > 1. the panel loads slowly, sometimes a full second before it shows
> > 
> > Maybe you're seeing the intentional effect of bug 498272?
> 
> If so, we need to tune it. It feels *really* heavy. I'd describe it as laggy
> actually.

In order to find a better default value, we could add a hidden pref or if you're building on Win7 you could modify the number directly: http://mxr.mozilla.org/mozilla-central/source/browser/base/content/browser-tabPreviews.js#379

> > > 2. the thumbnails load slowly - sometimes i get empty panel, then thumbnails
> > > fill in
> > > 3. the panel leaves slowly, sometimes stuck there for half-second
> > 
> > I don't think I'm seeing this on Windows and Linux. Could this be a
> > Mac-specific regression?
> 
> I'm on Win7.
> 
> Note that these perf issues are not 100% of the time I use it. However, it's
> often enough to be pretty serious bug IMO.

I'm on XP. On Win7, the only difference from our side is that we're using Aero Glass. I guess you could try launching Minefield in XP compat mode and see if this makes a difference.
For the slow mouseover feedback performance I've found that removing display:block makes it a lot faster. Maybe we'll have to reimplement the wrapping in JavaScript - mixing display:block with XUL doesn't seem to work very well.
That's interesting, but now we're talking about a different panel. One opens when pressing Control+Tab (pref: browser.ctrlTab.previews) and another one can be opened from that panel or via Shift+Control+Tab or with the All-tabs button on the tab strip (pref: browser.allTabs.previews). Now I'm not sure which one you meant, Dietrich.
(Reporter)

Comment 6

9 years ago
I filed this bug on ctl+tab, not the all-tabs panel.
Ok, comment 4 is about the all-tabs panel unless I'm missing something.
Yes, sorry I wasn't paying attention.
I can't reproduce sluggishness in the ctrl+tabs panel on a modern MacBookPro. nor on an 6 y/o XP box.

Has other work in this area somehow addressed the initial issue, dietrich?
Keywords: qawanted
(Reporter)

Updated

9 years ago
OS: Windows NT → Windows 7
(Reporter)

Comment 10

9 years ago
I'll re-test next time I boot into Windows.

Comment 11

5 years ago
This is still an issue. Compare opening and closing multiple tabs very quickly on Chrome and Firefox on Mac OS X. I have a 2012 MBPro Retina. Firefox is very slow. It's really the last thing that is keeping me from switching back to Firefox. I am willing to record a video.
(In reply to Bjorn Tipling from comment #11)
> This is still an issue. Compare opening and closing multiple tabs very
> quickly on Chrome and Firefox on Mac OS X. I have a 2012 MBPro Retina.
> Firefox is very slow. It's really the last thing that is keeping me from
> switching back to Firefox. I am willing to record a video.

It sounds like you're not actually experiencing the issue this bug was filed for. Can you file a new bug?

Updated

2 years ago
Status: NEW → RESOLVED
Last Resolved: 2 years ago
Resolution: --- → INCOMPLETE
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