-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 2/6/2013 8:15 AM, Eric Keller wrote: > On Wed, Feb 6, 2013 at 9:08 AM, andy pugh <bodge...@gmail.com> > wrote: > >> On 6 February 2013 13:25, John Morris <j...@zultron.com> wrote: >>> Please ask questions about anything still unclear, and I >>> promise a short answer. >> >> This seems to be close to (or possibly already there) a >> situation where LinuxCNC can be distributed as application-only >> to run on a generic kernel. >> > will it run a machine on a generic kernel? The closest would be > an rt-preempt kernel, is that standard with any distributions ? I > will admit to be confused, this discussion doesn't seem to talk > about rt_preempt kernels. Does rt_preempt offer sufficient latency > numbers?
Yes, you can run a machine with a PREEMPT_RT kernel, and one is available pre-packaged in Debian Wheezy (and perhaps other distributions, as well). Performance is not as good as RTAI or Xenomai, but using a distribution provided kernel is a pretty big plus. Details and some performance numbers are available on the wiki page that tells you how to build it: http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Debian_Wheezy_Linux-Rt_Compile_LinuxCNC With a generic kernel that has no real-time patches, you'd be best off sticking with something like the sprinkler controller someone was building, rather than anything that includes a servo loop. The latency numbers are horrid without _some_ sort of real-time patch. - -- Charles Steinkuehler char...@steinkuehler.net -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (MingW32) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iEYEARECAAYFAlESerMACgkQLywbqEHdNFz+mwCeMeD08OTiCsJHh/NniY1iKTBQ fxUAnRhQmrREYR6zjsBkKactq3PzGQay =xymJ -----END PGP SIGNATURE----- ------------------------------------------------------------------------------ Free Next-Gen Firewall Hardware Offer Buy your Sophos next-gen firewall before the end March 2013 and get the hardware for free! Learn more. http://p.sf.net/sfu/sophos-d2d-feb _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
