I have been waiting for XWayland to be merged before running benchmarks of this layer that allows X11 applications to run atop Wayland. However, in the mean time, a Phoronix reader decided to carry out some X.Org vs. XWayland benchmarks in the 2D space.
Chang Liu from Shanghai wrote in this morning, "Following your recent benchmarks of XMir performance regression I ran a few XWayland vs. Xorg benchmarks...I can't get OpenGL apps running in XWayland so no 3D. Also GtkPerf causes weston to segfault so no results too."
His initial findings were that XWayland is generally faster. "It is, however, evident from the preliminary results (especially the x11perf ones) that XWayland is doing much better performance-wise. There are only two tests in which XWayland performs worst than Xorg. There are several tests in which XWayland performs better than Xorg. Most of the tests show that in terms of performance, XWayland is on par with Xorg and better than XMir. I'm not an expert but I believe this may serve as an evidence that Wayland is architecturally superior than Mir. By the way weston is pretty much in a usable state. I have no difficulty accomplishing daily tasks with weston+xwayland."
Chang Liu carried out his testing from an Intel Core i3 system and was using Arch Linux with the Linux 3.9 kernel. His benchmarking was done via our open-source and publicly available Phoronix Test Suite software and the results along with the system hardware/software details and benchmark data uploaded to OpenBenchmarking.org.
Hit up 1306302-UT-MERGE572853 for Chang Liu's x11perf benchmark results for Intel graphics on an X.Org Server vs. XWayland with Weston. There's also Cairo 2D benchmark results within 1306306-UT-MERGE610023.