Messages in this thread |  | | | Date | Tue, 09 Dec 2008 10:39:26 -0600 | | From | "Chris Friesen" <> | | Subject | Re: [patch] Performance Counters for Linux, v2 |
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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?
Chris
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