* Chris Friesen <cfriesen@xxxxxxxxxx> wrote: > Ingo Molnar wrote: > >> When there are two (or more) hw metrics to profile, the ideally best >> (i.e. the statistically most stable and most relevant) sampling for >> the two statistical variables (say of l2_misses versus l2_accesses) is >> to sample them independently, via their own metric. Not via a static >> 1khz rate - or via picking one of the variables to generate samples. > > Regardless of sampling method, don't you still want some way to > enable/disable the various counters as close to simultaneously as > possible? If it's about counter control for the monitored task, then we sure could do something about that. (apps/libraries could thus select a subset of functions to profile/measure, runtime, etc.) If it's about counter control for the profiler/debugger, i'm not sure how useful that is - do you have a good usecase for it? Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
