Nadym Salem schrieb: > On Thu, August 16, 2007 16:31, Gilles Chanteperdrix wrote: >> On 8/16/07, Nadym Salem <[EMAIL PROTECTED]> wrote: >>> On Thu, August 16, 2007 16:01, Gilles Chanteperdrix wrote: >>>> Aha, this probably means that your chipset is not supporte, could you >>>> run lspci and send us the output ? >>> it is attached. >> Could you try to apply the attached patch to xenomai sources ? You >> will then have to recompile your xenomai-patched kernel. > > Hmm, I have a new (quite old) machine now and installed Xenomai 2.3.3, > having the same problem as before. The SMI workaround doesn't appear in > the kernel log at all. Last time you gave me a "patch" for smi.c after > which the system at least tried to start the smi workaround. Is there > another possibility like that for my other machine ? I attached the output > of lspci. > > tx in advance, > > greets, Nadym > > PS: Could it be, that this machine doesn't have SMIs at all ?
For sure, but there can also be other hardware-related latency killers. So far the SMI workaround only deals with Intel chipsets (because there are known knobs thanks to the chipset manual). I can't join this party for the next days, but I would like to throw in the question if you already tried to analyse the latency spot with the I-pipe tracer (see Xenomai wiki). That may either underline that it is outside the software's scope (arbitrary delays in unrelated kernel functions) or point to a potential (but less likely) software issue. Jan -- Siemens AG, Corporate Technology, CT SE 2 Corporate Competence Center Embedded Linux _______________________________________________ Xenomai-help mailing list [email protected] https://mail.gna.org/listinfo/xenomai-help
