X.org slowness

Wondering why X takes so long to start up (and inspired by the smaller source tree since it went modular ;-), I did a little profiling tonight. Turns out that probing the PCI bus is taking quite a while (Debian/unstable's X.org). The last call to pciFindNext() was taking 1.7 seconds just to report no more devices!

I edited hw/xfree86/os-support/bus/Pci.c to this (14 was the number of the last call on my system), which removed the delay:

if (idx < 14)
	tag = pciFindNext();
else
	tag = PCI_NOT_FOUND;

Maybe just counting the lines in /proc/bus/pci/devices and stopping when we get that many would work?

Another slow looking bit is xf86OpenConsole (1.1 seconds), but I don't have time to investigate right now.