On Tue, 12 Jul 2005 12:47:21 -0400 Eric Dantan Rzewnicki <rzewnickie@xxxxxxx> wrote: > On Tue, Jul 12, 2005 at 06:11:55PM +0200, Marcel Karras wrote: > > Hello, > > > > I've just joined the list and it's pretty interesting. > > Can someone tell me something about the differences between the > > preempt patch from Ingo and the "Realtime Linux Security Module"? > > I currently use the latter one and I'm quite satisfied as jack works > > really fast. Perhaps one should try this way instead of the vanilla > > kernel patch. There have to be pros and cons I'm interested in. Can > > someone point them out? > > The LSM and Ingo's patches are addressing 2 separate issues. Ingo's > patch is working to minimize sources of latency in various code paths in > the kernel. The rtlimits and the realtime-lsm are addressing the issue > of providing a security model for realtime applications to get the > capabilities they need to run in real-time. Ordinarilly these > capabilities (CAP_SET_PCAP, mlockall(), and SCHED_FIFO()) are only > accessible as root. rtlimits and the realtime-lsm provide infrastructure > for allowing these capabilities to be granted to only a specified set of > users/processes. Thank you so far! I've just found an interesting approach to that issue: http://aplawrence.com/Blog2005/drag4.html BTW: How can I figure out my current latency time? (are there valuable benchmark tools?) Thank you - Marcel -- ------------------------------------------------------------------------ Contact: toka@xxxxxxxxxxx karma@xxxxxxxxxxxxxxxxxxxxxxxxx http://www.freebits.de http://www.tu-chemnitz.de Unix, Linux && OpenSource Student of Chemnitz University of Technology ------------------------------------------------------------------------
