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The subject performance regression: https://bugs.freedesktop.org/show_bug.cgi?id=77372 Hello everyone! I need help with dissecting the performance regression i.e. identifying the faulty component. It's far beyond my skills to do it on my own. I can provide system information and command line outputs but I couldn't e.g. downgrade xserver to a specific version or do a selective update of only Gnome Shell, only graphics driver etc. Regression summary: 1. Introduced between Fedora 18 and Fedora 19 releases. Clean Fedora 18 showing no performance problems, clean Fedora 19 being affected by the regression. 2. A system install (e.g. Fedora 19) affected by the regression shows no performance problems under KDE. The difference in desktop animation smoothness is striking. No need for telemetry. 3. A Gnome Shell developer (drago01) could not reproduce the bug on his Intel GM45 system. I've done some F18 vs F19 vs Arch benchmarking / Gnome vs LXDE using Xonotic in windowed mode but the results were nowhere near as conclusive as #2. I'd really appreciate a thorough assistance with this issue. Regards, rim |