On Friday 07 December 2012 14:05:13 Jon Elson did opine: > Michael Haberler wrote: > > it's the latency test which comes with the xenomai userland support; > > note this is for idle CPU > > > > running a compile over NFS this creeps up to 30ish max/55worse while > > still being around 12 average > > Well, average is not very meaningful for our purposes. 55 worst case is > not good for > SW step generation, but probably acceptable for hardware-assisted > systems. OR, > for use with the PRU, which looks quite promising! > > > it's fixed at 720 Mhz, I took all the frequency scaling/power > > management options out of the kernel config, in a previous kernel > > build these were on and the result was much worse. > > Certainly no surprise! > > Jon > Silly Q, Jon & the rest of you hardware guru's. Has anyone looked at the possibility of using a propeller board for something like this? With 8 cores of what I see as a risc machine, it seems possible if it wouldn't be i/o bound.
Or is this something that an arduino per channel would make a better design because I think I see that the propsticks output ports are multiplexed, probably at its clock speed, 12 to 50 mhz? This could create jitter right there. > ------------------------------------------------------------------------ > ------ LogMeIn Rescue: Anywhere, Anytime Remote support for IT. Free > Trial Remotely access PCs and mobile devices and provide instant > support Improve your efficiency, and focus on delivering more value-add > services Discover what IT Professionals Know. Rescue delivers > http://p.sf.net/sfu/logmein_12329d2d > _______________________________________________ > Emc-developers mailing list > Emc-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-developers Cheers, Gene -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) My web page: <http://coyoteden.dyndns-free.com:85/gene> is up! "I'd love to go out with you, but I'm taking punk totem pole carving." I was taught to respect my elders, but its getting harder and harder to find any... ------------------------------------------------------------------------------ LogMeIn Rescue: Anywhere, Anytime Remote support for IT. Free Trial Remotely access PCs and mobile devices and provide instant support Improve your efficiency, and focus on delivering more value-add services Discover what IT Professionals Know. Rescue delivers http://p.sf.net/sfu/logmein_12329d2d _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
