Jack, On Wed, Oct 18, 2006 at 04:55:30PM -0500, Jack Steiner wrote: > On Wed, Oct 18, 2006 at 02:44:13PM -0700, Stephane Eranian wrote: > > Jack, > > > > The perfmon subsystem will not work correctly if you mix > > Madison and Montecito in the same box. And there is not an > > easy way to make it work with such configuration. Performance > > counters are different between the two models. > > The failing case that I ran into was a mixture of rev 5 & rev 7 > montecitos: > Intel(r) Itanium(r) 2 Processor 1.6GHz with 24M L3 Cache for 533MHz Platforms > Intel(r) Itanium(r) 2 Processor 1.6GHz with 18M L3 Cache for 533MHz Platforms > > I assume that will work ok. Right? > Yes, I think for this you are ok. > However, there is also a patch that Russ Anderson pushed last week (at least > I think he pushed it). We are planning to support systems with mixtures of both > madison & montecito. Sounds like we have a problem :-( > Yes, I recall seeing something along those lines not too long ago... With the existing perfmon v2.0, All the PMU description tables are compiled in. I think what we could do is to detect we have a mixed (family) configuration and drop to the generic (architected) PMU with only 4 counters and 2 events. That is, I am afraid, the best we could do. -- -Stephane - To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
|