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http://www.openoffice.org/issues/show_bug.cgi?id=70244





------- Additional comments from [EMAIL PROTECTED] Tue Mar 11 10:31:42 +0000 
2008 -------
@kohei: thanks for looking into this!
When you look at the implementation of the method mentioned above you'll easily 
see what the 
problem is about: Not only are the available rows tested, but also all of the 
numerically possible rows. 
The method itself is not too expensive, but the cumulative cost of all the 
superfluous small text 
measurements can become significant. Since the cost of all these text 
measurements showed up 
prominently in a profile run it was originally seen as a performance problem in 
VCL, but a more 
detailed look revealed that this was not the case because of the root cause I 
outlined in this issues first 
comment.

I'd rather not attach the document where I noticed the problem since I don't 
know the exact copyright 
status of it. I haven't looked into this problem for a long time, so it would 
cost me quite some effort to 
write another document which exhibits the issue. I'd probably do it though if 
you have too much 
trouble to get a document where ScDocument::GetNextDifferentChangedRow() is 
called indirectly while 
the document gets loaded.

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