Slow X startup and Hammering /proc/pci
daniel at freedesktop.org
Sun Jun 4 10:52:53 PDT 2006
On Sat, Jun 03, 2006 at 02:35:18PM +0100, Thomas Leonard wrote:
> On Sat, 03 Jun 2006 15:21:11 +0300, Daniel Stone wrote:
> > On Fri, Jun 02, 2006 at 08:28:33PM +0100, Thomas Leonard wrote:
> >> Here are four traces, showing each combination of patches:
> >> http://www.ecs.soton.ac.uk/~tal/traces/
> >> (ignore the last two points on each graph, as that just shows when I hit
> >> ctrl-alt-backspace to exit!)
> >> Summary:
> >> Original: 5.99 s
> >> With bugzilla patch: 5.07 s
> >> With my change: 4.31 s
> >> With both: 3.84 s
> > http://people.freedesktop.org/~daniels/xorg-pci-speedup.diff is extremely
> > nasty (lots of mangling between os-support/bus, and the OS subdirs), but
> > it does the trick. Does it still give you the same performance boost?
> No, because it still calls pciFindNext() on the last iteration of the loop...
> adding a break makes it work:
> if (idx == xf86OSMaxPciDevs)
> tag = pciFindNext();
Gotcha. Aside from that?
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