Build Identifier: http://hg.mozilla.org/mozilla-central/rev/6dc468c41136 Mozilla/5.0 (Windows NT 6.1; WOW64; rv:9.0a1) Gecko/20110821 Firefox/9.0a1 ID:20110821030758 I was encountered a problem while I tested Bug 680767. The Bug 680767 is mentioned for Firefox3.6 linux. But this is Firefox4.0 and later version. Firefox4.0 and later version is almost hang up. On the other hand, Firefox3.6.20, Initial page is displayed within about 10 sec. Tested with @2.5GHz Core2Quad. I found a regression range with attachment. Regression range(cached m-c hourly) Fast(initial page is displayed within about 10 sec/@2.5GHz Core2Quad): http://hg.mozilla.org/mozilla-central/rev/5f857be14db9 Mozilla/5.0 (Windows; Windows NT 6.1; WOW64; rv:2.0b3pre) Gecko/20100727 Minefield/4.0b3pre ID:20100728145944 Very slow(browser almost hang up): http://hg.mozilla.org/mozilla-central/rev/b8b62b351c09 Mozilla/5.0 (Windows; Windows NT 6.1; WOW64; rv:2.0b3pre) Gecko/20100728 Minefield/4.0b3pre ID:20100728152620 Pushlog: http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=5f857be14db9&tochange=b8b62b351c09 Triggered by: Bug 572520 - make all imgIDecoderObserver notifications asynchronous

I got the log in the following procedures Open the file Wait about 20 sec. Brake debugger

This also happen on Linux build with attachment 554748 [details] . http://hg.mozilla.org/mozilla-central/rev/6dc468c41136 Mozilla/5.0 (X11; Linux i686; rv:9.0a1) Gecko/20110821 Firefox/9.0a1 ID:20110821030758

So I think there may be two things going on here: 1) The async OnStartContainer triggers an unconditional reflow request in nsImageFrame::OnStartContainer which requires us to find the right frame, etc. I have a fix for that. 2) The async OnStopRequest means that we hit FindUnfinishedRequestCallback in the docloader for each of the image requests while a bunch of other image requests are in the hashtable. Of course none of these have any status message, so the whole operation is pointless. This is covered by bug 642551. Alice0775, are you willing to retest with the patches I'm about to upload here and in bug 642551?

(In reply to Boris Zbarsky (:bz) from comment #3) > > Alice0775, are you willing to retest with the patches I'm about to upload > here and in bug 642551? I built in locally and tested on Windows7 i686 Built from changeset 1720b28e3115 + attachment 554968 [details] [diff] [review] + attachment 554969 [details] [diff] [review] : it works very well.And initial page(attachment 554748 [details]) is displayed within about 10 sec.

Thank you for checking that!