I have adapted my main trunk to use the RT patches put in by Craig Hughes.

svn co http://svn.gumstix.com/gumstix-buildroot/branches/users/stevefalco/trunk falcobuildroot

This version uses the kernel RT patch to give the pulse-per-second interrupt maximum priority.  I'll report back when I have some performance numbers.

As part of this patch, I am now building the chrt utility, which is used to tune the realtime settings.

BTW, thanks to Chris Dollar for figuring out the recent NTP build problems.