Closed
Bug 693898
Opened 13 years ago
Closed 12 years ago
High heap-unclassified on Xenu's broken link report (large HTML page with many links)
Categories
(Core :: General, defect)
Core
General
Tracking
()
RESOLVED
DUPLICATE
of bug 682431
People
(Reporter: justin.lebar+bug, Unassigned)
References
Details
Attachments
(1 file)
13.37 KB,
application/x-xz
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Details |
I get ~50% heap-unclassified with the attached page. The page has many links, so this may be a duplicate of bug 682437.
Reporter | ||
Updated•13 years ago
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Depends on: DarkMatter, 145425
Comment 1•13 years ago
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Or the memory reporter for link URIs, yeah.
Reporter | ||
Comment 2•13 years ago
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Textruns could account for some of this heap-unclassified, but the file is 33mb uncompressed, so the textruns shouldn't be much more than that, right? The heap-unclassified is 240mb. (On a completely unrelated note, I am really impressed that xz compressed this file to 13kb. In comparison, bz2 compresses to 400kb.)
Comment 3•13 years ago
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I don't have a good feel for how many bytes per char textruns are. But all the URIs in that file are absolute as well, and an nsStandardURL is just not _that_ much overhead over its string.... We need some DMD love here.
Comment 4•13 years ago
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(In reply to Boris Zbarsky (:bz) from comment #3) > I don't have a good feel for how many bytes per char textruns are. A bare minimum of 4 bytes per char for the CompressedGlyph array (glyph IDs and advance widths), plus a couple hundred bytes overhead per run. An extra one or two bytes per char if the textrun has to store a copy of the text, because it wasn't marked as "persistent" on creation. And some more for DetailedGlyph and GlyphRun records in cases that involve complex glyph layout, multiple fonts, etc. So 33mb of text could easily account for 150mb or so.
Comment 5•13 years ago
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I loaded this file in a Linux build with the textrun memory reporting patch from bug 671297; it showed about 94MB used by textruns. Which fits with expectations - that 33mb figure includes a bunch of markup, so it's rather less than half actual text, I expect.
Comment 6•12 years ago
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I just tested this with trunk and got 25--29% heap-unclassified. Then I tested it with a build with the patches from bug 723799, bug 682431 and bug 729008 applied, and I got 7% heap-unclassified. That's easily the lowest heap-unclassified I've ever seen. I think bug 682431's patch is mostly responsible.
Status: NEW → RESOLVED
Closed: 12 years ago
No longer depends on: DarkMatter
Resolution: --- → DUPLICATE
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Description
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