Hello, My application that worked fine in 10.9 (Mavericks) is now really sluggish with 10.10. To be more precise the first time the application is drew I can see the GUI toolkit drawing each widget and the same slowness is visible when resizing it. This application started in 3/4 seconds on 10.9 now takes approx. 8/9 seconds.
We've tried determining where the problem is, and we've noticed that without processing "Expose" event the whole application starts under a second (but of course there is no content in it). Also when the application starts and still drawing its content with you select the title bar and move by a few pixels the window, then the drawing is accelerated and almost instantaneous. This applications uses Motif/X11 with at the most 5 pixmaps and a few images loaded in a "Custom" widgets, but even without these resources the problem persists. I've also at hand other applications using the same toolkit and all of them have the same problem. We've also tried older Xquartz releases up to 2.7.5 and even the 2.7.8 beta without success. On Debian Linux (6 or 7) it works as expected without speed problems. Does anyone know what could be the problem here ? As of now I tend to believe the problem is on Xquartz side but I don't know how to check this ? (Maybe there is a Xquartz 'debug' to help ?) Also on a side-note, when installing Xquartz, fc-cache is taking a lot of times (almost 5/6minutes). Thanks in advance for your help.
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