I'm trying to install a hard realtime kernel in Lucid for some robotics work. My preference is RTLinux (http://rtlinuxfree.com) by Wind River Systems. I also see that there is a package by the name "linux-rt" in the repositories, and its description is: "complete Realtime (RT) Linux kernel".
My question is: are these two the same? If not, what are the differences between them and the pros and cons of each?