Am 12.10.2015 um 11:09 schrieb Jean-Marc Lasgouttes <lasgout...@lyx.org>:
> Le 12/10/2015 11:03, Stephan Witt a écrit : >> Unfortunately there are user reports telling LyX 2.2.0 is slow >> (resp. slower than 2.1.4), IMHO. And I don't know anything about >> Windows functionality and performance… > > Do you pointers on that? Maybe we should collect them for analysis. Actually there are two complaints, IMO. The first one I cannot find anymore. I believe it was an answer of some user to you. The 2nd one is from one user I've sent a link to test a 2.2.0 LyX development disk image: > Hi Stephan, > > The developer version of Lyx you sent me appears to have a big bug displaying > text when the option "Use pixel map cache to speed up font rendering" in > enabled. Many words are only partly shown on the screen (see attached > screenshot, this problem exists for all Lyx files I have). This problem goes > way if I disable that option, but then the scrolling is very slow and choppy, > and the font becomes very thin and less pleasant to read on a retina display. > I'm using OS X El Capitan by the way. In fact it's the user who told me about the pixmap cache problem. I've asked him already if it's slower than 2.1.4 but didn't get an answer so far. >> How did you determine that rendering is faster? May I try the same >> and see how it works for me? > > Well, on my iMac, just moving around the scrollbar thumb in a large document > made a difference :) > > Otherwise, I use the Xcode profile (Instruments), run a session with lots of > scrolling and compare the time spent in BufferView::redraw with the time > spent in BufferView::updateMetrics (I think). > > I am not sure though whether the time spent in Mac OS core libraries is seen > there. Ok, I can do the same. Stephan
