https://bugs.documentfoundation.org/show_bug.cgi?id=158936
Bug ID: 158936 Summary: Writer extremely sluggish on larger files converted from .pdf. Appears to max out single cpu core Product: LibreOffice Version: 7.6.4.1 release Hardware: x86-64 (AMD64) OS: Linux (All) Status: UNCONFIRMED Severity: normal Priority: medium Component: Writer Assignee: libreoffice-bugs@lists.freedesktop.org Reporter: pbpub...@vivaldi.net Description: I have had this problem for many years. I thought my new Ryzen system would solve it, but it hasn't. I often work on files converted from .pdf, often fairly large, Opening them in LO takes up to 10 minutes at times, or fails altogether. If I can get it open the solution then usually is to remove all ad hoc formatting and convert various paragraph and page styles to a simple few. Today I tried working with a 16MB .pdf. I tried converting it to .docx via ilovepdf.com and then adobe.com, but LO, FreeOffice, and even Google Docs would not open the .docx. Then I opened the .pdf in Okular (no problem doing so) and did a text export. This opens fine in geany, but not in LO. So I truncated it to the manageable first 500kb to work on it. I stripped all formatting and converted everything to Default Paragraph Style and saved as .odt, at 520KB. Usually that's enough to solve performance problems, but this one is still a bear to work on. What happens is the cpu will go to 9-11% and hang there. That's doesn't sound bad, but what I think is happening is Writer is only working with one core, and that core is maxed out. The behavior is the same as if the cpu is maxed. LO freezes, usually alone, but sometimes Dolphin file manager will freeze too. Calc has a setting to enable multicore processing, but it does not help this Writer problem I'm on 7.6.4.1 on Linux. I also used to have this problem in my Windows days years ago. Steps to Reproduce: 1.Open large file with a lot of ad hoc formatting 2. 3. Actual Results: File may or may not open. If it does open, Writer will freeze up doing simple things like scrolling down. Expected Results: File should open and be workable. Reproducible: Always User Profile Reset: No Additional Info: ... -- You are receiving this mail because: You are the assignee for the bug.