On Mon, 2010-01-18 at 15:20 +0100, Frederic Weisbecker wrote: > > > Then there's still the question of having events of multiple hw pmus in > > a single group, I'd be perfectly fine with saying that's not allowed, > > what to others think? > > > I guess we need that. It can be insteresting to couple > hardware counters with memory accesses...or whatever.
That really depends on how easy it is to correlate events from the various pmus. This case could indeed do that, but the core vs uncore tihng is a lot less clear. > Perf stat combines cache miss counting with page faults, > cpu clock counters. perf stat also doesn't use groups and it still works quite nicely. > We shouldn't limit such possibilities for technical/cleanliness > reasons. We should rather adapt. Maybe, I'm not a very big fan of groups myself, but they are clearly useful within a pmu, measuring cache misses through total-access for example, but the use between pmus is questionable. But sure, if we can do it without too much pain, that's fine. ------------------------------------------------------------------------------ Throughout its 18-year history, RSA Conference consistently attracts the world's best and brightest in the field, creating opportunities for Conference attendees to learn about information security's most important issues through interactions with peers, luminaries and emerging and established companies. http://p.sf.net/sfu/rsaconf-dev2dev _______________________________________________ perfmon2-devel mailing list perfmon2-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/perfmon2-devel
