Closed
Bug 233311
Opened 21 years ago
Closed 2 years ago
Very poor performance while loading MS-Excel Exported page.
Categories
(Core :: Layout: Tables, defect)
Tracking
()
RESOLVED
WORKSFORME
People
(Reporter: dwat001, Unassigned)
References
()
Details
(Keywords: hang, perf, testcase)
Attachments
(2 files)
User-Agent: Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7a) Gecko/20040206 When browsing to the given page, http://www.tri.co.nz/confirmation.html mozilla goes into an infianate loop, (unresponsive, 100% CPU, left running for 10 minutes) With "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.5b) Gecko/20030903 Firebird/0.6.1+ " it display the screen first and then goes into the infinate loop. This page was generated by Excel 9 (2000) and it starts like this. <html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv=Content-Type content="text/html; charset=windows-1252"> <meta name=ProgId content=Excel.Sheet> <meta name=Generator content="Microsoft Excel 9"> <link rel=File-List href="./confirmation_files/filelist.xml"> <link rel=Edit-Time-Data href="./confirmation_files/editdata.mso"> <link rel=OLE-Object-Data href="./confirmation_files/oledata.mso"> Reproducible: Always Steps to Reproduce: 1. Browse to http://www.tri.co.nz/confirmation.html Actual Results: In Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7a) Gecko/20040206 Did not draw new page, CPU went to 100% Mozilla went unresponse. (menus scrolling close window, all other mozilla windows stop responding) in Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.5b) Gecko/20030903 Firebird/0.6.1+ it drew the page then went in to the infinate loop. Expected Results: Draw page, or not draw page, but not go unresponsive infinate loop.
The page is faily big 1832 KB I removed the some of the repeated content (it is a list of names) to take it down to 22KB This did not cause the problem to ocurr. Tryed again at 872 KB and it finished after 3:17 sec CPU time. So may be this is just taking a hudge amount of time to execute ( I'm on a P4 2Ghz with lots of memory so thats a lot of proccessing). For comparison Opera renders in less the a second, IE renders in about 2 seconds.
This page seems to be to small to create the problem but gives yo9u an idea of the HTML envoled.
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Comment 3•21 years ago
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the last column of the table is specified with a span of 251. Removing that makes the whole page load in a reasonable amount of time (25 seconds). dupe of bug 160816? ==> tables
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Comment 4•21 years ago
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Well, a profile of that page in the URL field shows:
Total hit count: 6800
Count %Total Function Name
6291 92.5 nsCellMap::GetDataAt(nsTableCellMap&, int, int, int)
80 1.2 __i686.get_pc_thunk.bx
35 0.5 nsTableFrame::CalcBCBorders(nsIPresContext&)
and for the actual callers:
43526 0 6298 nsTableRowGroupFrame::CalculateRowHeights
6293 nsTableFrame::RowIsSpannedInto
With pretty much all of that time spent in GetDataAt. Marking dependent for now.Depends on: 160816
Summary: Infinate loop while loading MS-Excel Exported page. → Very poor performance while loading MS-Excel Exported page.
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Updated•20 years ago
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Status: UNCONFIRMED → NEW
Ever confirmed: true
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Comment 5•20 years ago
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The patch in bug 54542 probably makes this a lot better, given that profile data in comment 4.
the url is 404, should we close the bug or is there any reliable testcase for this?
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Comment 7•18 years ago
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courtesy of archive.org
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Comment 9•12 years ago
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Cannot reproduce: Mozilla/5.0 (Windows NT 5.1; rv:12.0) Gecko/20100101 Firefox/12.0
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Comment 10•2 years ago
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Looks like this was WORKSFORME 10 years ago per comment 9, and I confirmed that the attachments load without noticeable delay for me in current Nightlies.
Status: NEW → RESOLVED
Closed: 2 years ago
Resolution: --- → WORKSFORME
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Description
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