> > The Atom330 has one CPU, if I understand correctly, but the BIOS has a > setting for HyperThreading, so Ubuntu thinks there are two CPUs. Has > anyone experimented with HT on/off to see the effect on realtime > latency? (would I need an SMP-realtime kernel?)
The Atom330 is a dual-core CPU. That means that with SMP packages you probably would get better performance. Question: do you need that? I don't think so, for a servo machine even 50k ns latency is ok. There are some SMP packages in experimental [1] but they have the disadvantage that you won't always get the latest emc2 version in automatic updates, and if no-one builds it you need to build it yourself from source. I had terrible bad experiences with HT on older P4 processors. It's best to keep it off for RT work. Regards, Alex [1] - http://linuxcnc.org/experimental/hardy/smp/ ------------------------------------------------------------------------------ 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 Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
