I have a Intel D945GCLF2 board with Atom 330 1.6 Ghz processors. I have a Debian system with Linux 2.6.30.5 + RTAI 3.7.1 compiled as described in http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Debian_Lenny_Compile_RTAI with SMP support.
HyperThreading is disabled from BIOS and the second core is isolated from GRUB with "isolcpus=1" I tested the system ~7 hours while abusing the machine with glxgears, ping flood, firefox+flash video, dd from /dev/zero to /dev/null vs The maximum latency is 5164 ns and 0 overrun. Regards acemi On 1/6/10, Alex Joni <[email protected]> wrote: > >> RT tasks don't show up on multiprocessor or uniprocessor systems, since >> they run in the kernel. (or I think that's the reason anyway) It > > Actually they run in another domain. > IPIPE (or ADEOS previously) is the way that more domains co-exist on the > same hardware. > The RTAI domain is a separate (call it OS if you like) from the linux > domain. > That's why monitoring tools (written for linux) can only see software or > load that happens to the linux domain. > That's also why you can't use linux drivers in the RTAI domain, but rather > have to reimplement them. > > Regards, > Alex > > > > ------------------------------------------------------------------------------ > This SF.Net email is sponsored by the Verizon Developer Community > Take advantage of Verizon's best-in-class app development support > A streamlined, 14 day to market process makes app distribution fast and easy > Join now and get one step closer to millions of Verizon customers > http://p.sf.net/sfu/verizon-dev2dev > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ This SF.Net email is sponsored by the Verizon Developer Community Take advantage of Verizon's best-in-class app development support A streamlined, 14 day to market process makes app distribution fast and easy Join now and get one step closer to millions of Verizon customers http://p.sf.net/sfu/verizon-dev2dev _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
