performance of pci_device_get_{vendor, device}_name() in X server startup

Alan Coopersmith alan.coopersmith at
Wed Jun 9 06:46:52 PDT 2010

Daniel Stone wrote:
> On Tue, Jun 08, 2010 at 09:40:55PM -0400, Matt Turner wrote:
>> On Tue, Jun 8, 2010 at 9:35 PM, Richard Barnette
>> <jrbarnette at> wrote:
>>> Still, cost/benefit matters here:  Essentially, the justification
>>> for all this work is a debug feature (being able to print the information
>>> in the log when things go wrong), not a performance enhancement.
>>> I'm not yet persuaded that that feature is worth the identified effort.
>> I'd still like to hear some opinions from people who do serious
>> xserver work, but from my perspective there's nothing wrong with only
>> executing this code if -verbose is used. The output of `lspci -vv` is
>> already a nearly required piece of any bug report, so I don't think
>> we're losing anything here.
> Indeed.  We already get a more accurate/useful device/vendor identifier
> string from the driver, and we don't need to know/care about non-GPU
> devices.
> I can see how it would be useful in verbose/error cases, but eh.

    if (verbose > normal)
	system("scanpci >& Xorg.0.log");

Just have to add a rule to the libpciaccess to actually
install scanpci by default, but it should provide exactly the same
info as we were generating/logging from libpciaccess, since it uses
the same routines.

	-Alan Coopersmith-        alan.coopersmith at
	 Oracle Solaris Platform Engineering: X Window System

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