https://bugs.documentfoundation.org/show_bug.cgi?id=93261
Bug ID: 93261 Summary: Persistently high background CPU usage by soffice.bin with high-word-count Writer document Product: LibreOffice Version: 5.0.0.5 release Hardware: x86-64 (AMD64) OS: Windows (All) Status: UNCONFIRMED Severity: major Priority: medium Component: Writer Assignee: libreoffice-bugs@lists.freedesktop.org Reporter: petercraigmartin...@gmail.com Hardware & OS: ThinkPad R61 with Intel Mobile Core 2 Duo T7500 @2.2GHz, NVIDIA Quadro NVS 140M GPU, and 8GB of RAM, running fully up-to-date Windows 7 x64 SP1. Problem with LibreOffice 5.0.0.5 x64: When I have loaded a ~10MB, ~14,000-word Writer file with over 100 embedded graphics formatted with 3 different custom frame styles, 19 different applied paragraph styles, 29 different applied character styles, and a fair number of instances of direct (non-style) formatting, and have finished letting it repaginate and redo the word count, soffice.bin's background CPU usage, while I'm not doing anything in LibreOffice or Writer, is 0%, as it should be. When I have loaded a ~1.5MB, ~720,000-word Writer file with no embedded graphics, no frame styles, no table of contents, no index, no index entries, all paragraphs formatted in default paragraph style, all text formatted in default text style, and all direct (non-style) formatting removed, and have finished letting it repaginate and redo the word count -- for over an hour -- soffice.bin's background CPU usage, while I'm not doing anything in LibreOffice or Writer, hovers at around 50%, driving my CPU and mainboard temperature up by 25°C. The same problem occurs in LibreOffice 4.4.5.2 x86, but to a lesser degree: soffice.bin's background CPU usage with a high-word-count Writer document loaded is "only" 20%. Unfortunately, the documents with which I tested this bug are proprietary and confidential and I absolutely cannot post or share them. I am hoping that someone else will have a nonconfidential high-word-count document on hand and can confirm it without too much effort. If not, I will eventually try to find a high-word-count document in the public domain, test it, and submit it if it bears out my theory. This bug was enough to cause me to downgrade to 4.4.5.2 x86, as I don't want to subject my fan, thermal compound, CPU, and mainboard to high temperatures over a long period of time, especially if I'm not getting any actual computational work done in exchange. I really hope this bug can be confirmed with generic documents and fixed, as I quite liked some of the added features and (apparently) faster loading speed I saw in LO 5. -- You are receiving this mail because: You are the assignee for the bug.
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