Am 07.12.2012 um 04:40 schrieb Jon Elson: > Michael Haberler wrote: >> and not so bad: >> >> $ /usr/xenomai/bin/latency >> >> RTT| 00:02:28 (periodic user-mode task, 1000 us period, priority 99) >> RTH|----lat min|----lat avg|----lat max|-overrun|---msw|---lat best|--lat >> worst >> RTD| 4.249| 5.124| 19.333| 0| 0| 0.833| >> 24.916 >> RTD| 4.333| 5.124| 21.124| 0| 0| 0.833| >> 24.916 >> RTD| 3.999| 5.124| 17.083| 0| 0| 0.833| >> 24.916 >> RTD| 4.083| 5.166| 18.083| 0| 0| 0.833| >> 24.916 >> >> it confirms the guesstimate that the beaglebone is roughly 2x as fast as the >> Raspberry >> > These numbers are us? Not too bad at all! Glad to see REAL > measurements, at last!
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 > xenomai looks real good for RT. What clock speed is the CPU running > at? It seems > you can set it for all sorts of different speeds, or even variable speed > (which we don't > want!) 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 -m > > Jon > > > ------------------------------------------------------------------------------ > 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 ------------------------------------------------------------------------------ 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
