Open Bug 964815 Opened 7 years ago Updated 8 months ago
Firefox hangs for long time when opening box
.com document (thousands of <use> elements)
Opening https://app.box.com/s/euscsfh0h9pgbeqq57g4 causes FF not to respond for some time. CPU spikes to 100%.
Component: Untriaged → SVG
Product: Firefox → Core
The document seems to consist of 4.5 MB of <use> elements. It hangs Opera 12 too.
Duplicate of this bug: 969296
I guess firefox 29 and 30 are also affected?
Can we find out how far back this reproduces? That might help also determine if this is a bug on the Firefox side or something with the web content.
I don't think it a regression, the SVG that is generated by conversion of PDF content. The content contains lots of elements as mentioned in comment 2. I think all browsers will have issue with this SVG - it might take long time to render it, but we shall not lock the main thread because of it.
Regression window(m-c) Good: http://hg.mozilla.org/mozilla-central/rev/b370698fb55c Mozilla/5.0 (Windows NT 6.1; WOW64; rv:6.0a1) Gecko/20110521 Firefox/6.0a1 ID:20110521173635 Bad: http://hg.mozilla.org/mozilla-central/rev/76f08a32c046 Mozilla/5.0 (Windows NT 6.1; WOW64; rv:6.0a1) Gecko/20110521 Firefox/6.0a1 ID:20110521181806 Pushlog: http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=b370698fb55c&tochange=76f08a32c046 Triggered by: Bug 308590
Without bug 308590 we ignore the use elements so it's not really a regression as the testcase data is mostly ignored prior to that bug.
no longer tracking based on comment 8 stating this is not a regression and this being in product for a long time.
Summary: Firefox is unresponsive for long time when opening box.com document → Firefox hangs for long time when opening box.com document (thousands of <use> elements)
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