Philippe Gerum wrote: > Gilles Chanteperdrix wrote: >> Hi, >> >> I run clocktest on a system here, not running NTP, using >> CONFIG_GENERIC_CLOCKEVENT, with a systematic drift of 3us/s. How can >> this happen? Does it come from the error due to the multiply and shift >> used for tsc to/from ns conversions ? >> > > - ipipe_request_tickdev() returning a timer freq we don't like?
Well, I would expect ipipe_request_tickdev() to return the same frequency as the one used by Linux. > - does using your generic arith ops instead of the arch-dependent fast ops > help? Linux itself uses a multiply and shift strategy, so maybe the computation of the multiply and shift factors done by Xenomai does not find the same result as the one used by Linux? -- Gilles. _______________________________________________ Xenomai-core mailing list Xenomaifirstname.lastname@example.org https://mail.gna.org/listinfo/xenomai-core