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RecoverFloats repeatedly called despite no Floats in document.




Layout: Block and Inline
15 years ago
6 years ago


(Reporter: Ivan Eisen, Unassigned)


(Depends on: 1 bug, {perf})

Windows NT

Firefox Tracking Flags

(Not tracked)



(1 attachment)



15 years ago
If no Floats have been discovered, why go and call
nsBlockReflowState::RecoverFloats.  My trace of a text document shows that
2.18% of the time is spent in RecoverFloats.  I don't have any floats within
the document that was traced.
Why not have a global float encounted switch to be checked
before  nsBlockReflowState::RecoverStateFrom calls RecoverFloats.  The very
first time a float is encountered set this switch.  Else,  don't ever call
the RecoverFloats routine.


15 years ago
Summary: RecoverFloats repeatedly called dispite no Floats in document. → RecoverFloats repeatedly called despite no Floats in document.

Comment 1

15 years ago
Created attachment 136292 [details]
Large text document
This has been discussed in the past, I know... I can't locate the bug where the
discussion happened.

Comment 3

15 years ago
I am sure it was there at one time ; however, I also could not locate it.   The
problem does not seem as bad as it once was (some O(N^2) removed?).    

Comment 4

15 years ago
I believe this was a long running topic in the performance newsgroup several
years ago.  I found bug 117374 (UpdateSpaceManager no longer needed) which
is related to the newsgroup discussion.

Assignee: layout.block-and-inline → nobody
QA Contact: ian → layout.block-and-inline
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