On Jan 7, 2008, at 8:39 AM, Christiaan Hofman wrote: > > On 7 Jan 2008, at 4:59 PM, Adam R. Maxwell wrote: > >> >> On Jan 7, 2008, at 3:22 AM, Christiaan Hofman wrote: >> >>> Adam, perhaps you have an idea on this. With some PDFs, I see a >>> considerable memory leak in thumbnail drawing (in some cases 100MB). >>> I tracked the trouble to -[PDFPage drawWithBox]. The PDFView >>> sometimes drops graphics from the offending pages and does not seem >>> to have the leak and slowdown, at least not as much. The thumbnails >>> never drop graphics. I can send a file if you want (can't attach it >>> on the list). >> >> Wow! That's a pretty incredible leak; I've never seen anything like >> it. It'd be interesting to see if it's fixed in Leopard, but I don't >> have any ideas for workarounds. Did you try overriding drawWithBox: >> to get the CGPDFPageRef via -pageRef and draw it directly to see if >> that "fixes" the leak? > > It does not seem to be a real memory leak, or at least not that big. > But it's a very strange use of memory. When I open this file and show > the thumbnails for page 12&13 real memory use goes up to 200MB > (according to Activity monitor), and doesn't go down again after > closing the document (also not after a while). However, when I reopen > the document without showing those two thumbnails, memory usage goes > *down*. After a few times doing this memory usage is back to normal > (about 30-40MB). Also MallocDebug doesn't show any leaks. > > But there is a definite bug. Drawing the thumbnails is very very > slow, and I get malloc errors.
No problems here in Skim or Preview (or FVPDFIcon). Page 13 slows down Skim's magnifier quite a bit, but thumbnails draw quickly. The malloc errors sound bad, though; that generally means things are headed for a crash. ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ skim-app-develop mailing list skim-app-develop@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/skim-app-develop
