Re: [Xenomai-core] xenomai 2.5 rc1 timing computations.

2009-04-28 Thread Gilles Chanteperdrix
Philippe Gerum wrote: > On Tue, 2009-04-28 at 07:50 +0200, Gilles Chanteperdrix wrote: >> Hi, >> >> currently, the situation is this: >> - the timing core uses an approximate value of the cpu frequency (using >> xnarch_llmulshft) to do conversions between tsc and ns; >> - the APIC timer reprogramma

Re: [Xenomai-core] xenomai 2.5 rc1 timing computations.

2009-04-28 Thread Philippe Gerum
On Tue, 2009-04-28 at 07:50 +0200, Gilles Chanteperdrix wrote: > Hi, > > currently, the situation is this: > - the timing core uses an approximate value of the cpu frequency (using > xnarch_llmulshft) to do conversions between tsc and ns; > - the APIC timer reprogrammation still uses imuldiv, that

Re: [Xenomai-core] xenomai 2.5 rc1 timing computations.

2009-04-28 Thread Philippe Gerum
On Tue, 2009-04-28 at 14:21 +0200, Gilles Chanteperdrix wrote: > Philippe Gerum wrote: > > On Tue, 2009-04-28 at 07:50 +0200, Gilles Chanteperdrix wrote: > >> Hi, > >> > >> currently, the situation is this: > >> - the timing core uses an approximate value of the cpu frequency (using > >> xnarch_llm

Re: [Xenomai-core] xenomai 2.5 rc1 timing computations.

2009-04-28 Thread Gilles Chanteperdrix
Philippe Gerum wrote: > On Tue, 2009-04-28 at 14:21 +0200, Gilles Chanteperdrix wrote: >> Philippe Gerum wrote: >>> On Tue, 2009-04-28 at 07:50 +0200, Gilles Chanteperdrix wrote: Hi, currently, the situation is this: - the timing core uses an approximate value of the cpu frequen

Re: [Xenomai-core] xenomai 2.5 rc1 timing computations.

2009-04-28 Thread Philippe Gerum
On Tue, 2009-04-28 at 15:45 +0200, Gilles Chanteperdrix wrote: > Philippe Gerum wrote: > > On Tue, 2009-04-28 at 14:21 +0200, Gilles Chanteperdrix wrote: > >> Philippe Gerum wrote: > >>> On Tue, 2009-04-28 at 07:50 +0200, Gilles Chanteperdrix wrote: > Hi, > > currently, the situation