https://bugs.freedesktop.org/show_bug.cgi?id=107183
--- Comment #2 from Paul Menzel pmenzel+bugs.freedesktop@molgen.mpg.de --- (In reply to Michel Dänzer from comment #1)
FWIW, this only takes a few milliseconds on my systems.
Thank you for testing that. Could you please list the details for one of these systems (hardware, Linux version, X server versions, …)?
You'd have to profile where the time is spent on your system, but it's more likely somewhere between glamor and Mesa / LLVM than in the kernel.
Interesting. Is there a debug switch for the module glamoregl or do I need to use something like `perf` or `oprofile`?