Mailing the story:
James Morris: Recent Developments in SELinux Kernel Performance
This article covers some recent changes in the SELinux kernel code including a performance patch from Kaigai Kohei of NEC and related updates to the selinuxfs API. Currently, these changes are waiting in the -mm tree for merging into Linus' kernel in 2.6.10, and are also available in the development Fedora and RHEL4 Beta kernels. This article should be useful to sysadmins who are looking to understand SELinux performance and generally also to curious people.