Messages in this thread | | | Date | Tue, 20 Dec 2005 10:05:11 -0800 | From | Tony Luck <> | Subject | Re: quick overview of the perfmon2 interface |
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> > The interface also supports automatic randomization of the reset value > > for a PMD after an overflow. > > Why would one want to randomise the PMD after an overflow?
To get better data. Using a constant reload value may keep measuring the same spot in the application if you are using a sample frequency that matches some repeat pattern in the application (and Murphy's law says that you'll hit this a lot).
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