On 11/1/2012 5:10 AM, Michael Haberler wrote: > I got LinuxCNC 2.5 to run on an x86 with Xenomai kernel threads, by replacing > RTAI calls by their Xenomai equivalents. > > Initial results look promising. This is still unpolished and not ready for a > merge yet - I'm publishing this at this stage to enable feedback. > > - Michael > > >
1. So I tried first with a Pentium4 system that happened to be close at hand. It's the Dell Dimension 2400 system I long ago posted to the Latency Test Results table on the Wiki. It's running LinuxCNC 2.6.0-pre built on top of Ubuntu 10.04LTS. Result? No go. The .deb files based on the 3.2.21 kernel all seemed to install but no initrd.img-3.2.21-xenomai+ file was created and the system goes into a slumber when I try to boot into the 3.2.21-xenomai+ kernel. 2. Next, I tried an ASUS NB305 netbook (dual-core Atom N450) on which I recently installed Linux Mint 13. This netbook isn't really a candidate for LinuxCNC but it happened to be idling contently next to me so I thought I'd use it to look at the initrd problem. Result? No problem here. Boots into the 3.2.21-xenomai+ kernel without a hitch. I presume this means the postinst.d scripts ran on this machine but not on the P4 machine. I haven't installed LinuxCNC on this machine (yet) so can't quote any latency results comparable to yours. --- I have two more systems to try: my ASUS AT5NM10-I motherboard (dual-core Atom D510) and my Asus M488T-M with AMD quad-core Athlon II X4 640, both of which showed very low latency with RTAI and high and variable latency numbers with a PREEMPT_RT patched kernel. I was using them for something else and have to swap out some disks before I can fire them up but will have results by tomorrow morning. Regards, Kent ------------------------------------------------------------------------------ LogMeIn Central: Instant, anywhere, Remote PC access and management. Stay in control, update software, and manage PCs from one command center Diagnose problems and improve visibility into emerging IT issues Automate, monitor and manage. Do more in less time with Central http://p.sf.net/sfu/logmein12331_d2d _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
