User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b7pre) Gecko/20100924 Firefox/4.0b7pre Build Identifier: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b7pre) Gecko/20100924 Firefox/4.0b7pre While I'm loading a site, tab animations (new tab, close tab) are sluggish. When the site loading is completed the animations will be smooth again. Reproducible: Always Steps to Reproduce: 1. Open a new profile. 2. For being on the safe side, disable Flash player. 3. Open msnbc.com . 4. While it's loading, open a new tab, with the new tab button, and close that tab. Do it several times. Actual Results: The tab animations are sluggish while the site are loading. When it completes loading, tab animations are smooth again. Expected Results: The tab animations should be smooth while the pages are loading, too. Note: this works with every site which uses some JS. For example while i log into Gmail.
Is this a regression? I suspect not.
Then what is this?
A bug that we've had for as long as we've had new-tab animations?
Yeah, i experience this a long time ago. If you can confirm this bug, please set it NEW.
blocking2.0: --- → ?
Version: unspecified → Trunk
For what it's worth, I can't reproduce this over here using msnbc (on Mac, though).... I can see how loading a site that ties up CPU for a while could cause that behavior, of course, but that site doesn't seem to do that. The only way to address the "ties up CPU for a while" issue is with e10s, and even that won't help if all your cores are busy.
Dao: is this a dupe? I remember there being a bug about how if we can't animate cleanly we should just bail on it and draw the tab w/o animation.
blocking2.0: ? → -
Is this really an option? Chrome and Opera is animating every time, smoothly. Drawing the tabs w/o animations looks much less awesome and obsolete.
It is really an option. The other option is chrome/content separation, which is out of scope for this request and certainly for Firefox 4.
It is very said to hear. :( Isn't there any other way to fix it? I'm aware that chrome/content separation wont be in Fx4.0, especially not for this.
Is this possibly because of the progress-line animations? I've noticed since they landed that the throbber animation is pausing.
Summary: Tab animations are sluggish while a site are loading → Tab animations are sluggish while sites are loading
On my laptop they are sluggish even when sites aren't loading, if anything they are the most sluggish when opening empty tabs. http://www.youtube.com/watch?v=oCSJP9nG7Q8 Near the end of the video is the best example of what I usually see. The animations get jerky most of the time. win7 64 bit 4gb ram 512MB Gddr3 mobility hd2600
(In reply to comment #12) > On my laptop they are sluggish even when sites aren't loading, if anything they > are the most sluggish when opening empty tabs. > http://www.youtube.com/watch?v=oCSJP9nG7Q8 > Near the end of the video is the best example of what I usually see. The > animations get jerky most of the time. > win7 64 bit > 4gb ram > 512MB Gddr3 mobility hd2600 *forgot a spec, 2GHZ core2 duo
I can confirm this bug on a Asus 1201n using last nightly. The video from Brandon shows exactly what my problem is..
Bisides Grafx Bot test http://brasstacks.mozilla.com/resultserv/data/results/fd6412c9-1596-408e-a0a9-caf629b086a1 Anything else I might run to help discover the cause?
9 years ago
i can confirme this issue both in my desktop and laptop.
I can confirm the issue. Today I tried Firefox 3.6.x and it was faster in opening new tabs.
Status: UNCONFIRMED → NEW
Ever confirmed: true
(In reply to Marco Castelluccio from comment #17) > I can confirm the issue. Today I tried Firefox 3.6.x and it was faster in > opening new tabs. Marco 3.6 faster while loading pages? If it is, please change this to a Snappy:P2
Whiteboard: [Snappy] → [Snappy:P3]
Sorry for the delay. However it's the tab animation that is faster. Now that bug 593680 is about all the platforms, probably we could close this as its duplicate.
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